NEW MOLLUSKS FROM CAMAGUEY AND SANTA CLARAPROVINCES, CUBA.
By Carlos de la Torre,Of the University of Havana,andJohn B. Henderson,Of Washington, District of Columbia.
The new mollusks herein described are of the genera Opisthosiphonand Eutudora only, and are all from the Cubitas range of mountainsin Northern Camaguey or from certain detached portions of the systemlying to the east near the boundary line of the Oriente Province, orto the west, near, or just over, the boundary line of the Santa ClaraProvince. New species of other genera from the same general regionwill be published in a forthcoming paper, when a full discussion ofthe notable features of this somewhat isolated faunula may moreproperly be presented. A brief description of the Sierra de Cubitashas, however, already appeared. 1 A few species of the Urocoptidaefrom this region have been described, and these will be included inthe forthcoming paper referred to. But one species of Opisthosiphon 2of this region has heretofore appeared in print, and that one is hereinrepublished in order to complete this list of the Annulariidae.As one of the genera and two of the subgenera to which all thesenew species are referred are of so recent creation, it may be well torefer to their descriptions in the Proceedings of the United StatesNational Museum (vol. 58, pp. 49-82). The subgenus Opisthosiphonincludes species of the genus Opisthosiphon destitute of spiral sculptureoutside of the umbilical walls,the typical subgenus admitting thesespecies possessing spiral sculpture on the spire of the shell even thoughobsolete.The genus Eutudora includes species with a typical Tudoroidoperculum but having some form of breathing device to enable theanimal to obtain air when the aperture is closed by withdrawal of theoperculum. The subgenus Eutudorops includes members of Eutudorathat possess an axial sculpture rendered wavy or articulate by moreor less obsolete spiral cords.
> Nautilus, vol. 29, No. 2, p. 17, June, 1915.
* 0. berryi Clapp, Nautilus, vol. 32, No. 3, p. 86, January, 1919.Proceedings U. S. National Museum, Vol. 59?No. 2369. 247
248 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.The following are the species of these groups so far known from theregion in question:Opisthosiphon (Opisthosiphona) herryi Clapp.Opisthosiphon (Opisihosipliona) herryi herryi Clapp.Opisthosiphon (Opisthosiphon a)herryi semiapertum, new subspecies.Opisthosiphon (Opisthosiphona) paredonense, new species.Opisthosiphon (Opisthosiphona) paredonense paredonense, newsubspecies.Opisthosiphon (Opisthosiphona) paredonense transitorium, newsubspecies.Opisthosiphon (Opisthosiphona) ohturatum, new species.Opisthosiphon (Opisthosiphona) ohturatum ohturatum, new sub-species.Opisthosiphon (Opisthosiphona) ohturatum suhohturatum, new sub-species.Opisthosiphon (Opisthosiphona) ohturatum hanaoense, new sub-species.Opisthosiphon (Opisthosiphona) apertum, new species.Opisthosiphon (Opisthosiphona) dalli Torre and Henderson.Opisthosiphon (Opisthosiphona) hioscai, new species.Opisthosiphon (Opisthosiphona) hioscai hioscai, new subspecies.Opisthosiphon (Opisthosiphona) hioscai tersum., new subspecies.Opisthosiphon (Opisthosiphona) salustii, new species.Opisthosiphon (Opisthosiphona) evanidum, new species.Opisthosiphon (Opisthosiphona) evanidum evanidum, new subspecies.Opisthosiphon (Opisthosiphona) evanidum degeneratum, new sub-species.Opisthosiphon (Opisthosiphona) occultum, new species.Opisthosiphon (Opisthosiphon) protractum, new species.Opisthosiphon (Opisthosiphon) judasense, new species.Opisthosiphon (Opisthosiphon) detectum, new species.Opisthosiphon (Opisthosiphon) obtectum, new species.Opisthosiphon (Opisthosiphon) obtectum obtectum,, new subspecies.Opisthosiphon (Opisthosiphon) obtectum tenuicostum, new subspecies.Opisthosiphon (Opisthosiphon) lamellicostatum , new species.Eutudora (Eutudorops) paradoxum, new species.OPISTHOSIPHON (OPISTHOSIPHONA) BERRYI Clapp.Opisthosiphon herryi Clapp, Nautilus, vol. 32, No. 3, 1919, p. 86, pi. 7, fig. 14.Plate 38, figs. 1-4.Shell longitudinally finely plicate, ochraceous buff, encircled witha broad chocolate-brown band on the periphery of the last whorl andon the lower half of the earlier whorls; slightly shining; decollated.Suture deep, crenate, four or five spiral ridges appearing on theumbilical region. Remaining whorls four, very convex. Aperture
No. 2369. NEW MOLLUSKS FROM CUBA?TORRE AND HENDERSON. 249
vertical, circularly oval; peristome white, double; the inner, a briefcontinuation of the whorl; the outer, on the right side, smooth,slightly expanded, at the suture broadly expanded and excavatedover the breathing tube, adnate to the penultimate whorl; columellarmargin expanded horizontally above in a broad flange adnate to thepenultimate whorl, a large lobe curving over and nearly covering theumbilical region, interrupted below by a broad sinus where the lipis abruptly reflexed and attached to the whorl, a smaller lobe ex-panded horizontally below. A minute breathing pore within theaperture near the posterior angle connects with a tube, somewhatconcealed in the expanded and excavated lip, which, curving backto the suture, descends and ends in the narrow space between theultimate and penultimate whorls. Numerous strong raised lamellaemostly originating on the inner lip, but occasionally extending alongthe parietal lip, cover that portion of the tube visible within the lip.Operculum as in Opisthosiplion pupoides Morelet.Type.?In the collection of the Museum of Comparative Zoology,Cat. No. 42005. It was collected by Dr. S. S. Berry at Cairije, Cerrode Tuabaquey, Province Camaguey, Cuba, and measures: Length,13.5 mm.; greater diameter, 9 mm.; lesser diameter, 7.3 mm.; alti-tude of aperture, 4.7 mm.; width of aperture, 4 mm. A paratypefrom the same locality is in Doctor Berry's collection. It measures:Length, 14.5 mm.; greater diameter, 9.7 mm.; lesser diameter, 7.5mm.; altitude of aperture, 5.5 mm.; width of aperture, 4.3 mm.OPISTHOSIPHON (OPISTHOSIPHONA) BERRYI BERRYI Clapp.Plate 38, figs. 1-4.This, the typical subspecies, is characterized by the greater ex-pansion of the peristome which completely conceals the umbilicus.It appears to be confined to the locality given for Mr. Clapp's type.OPISTHOSIPHON (OPISTHOSIPHONA) BERRYI SEMIAPERTUM, new subspecies.Plate 38, figs. 5-8.The rather solid shell is ovate conic with open umbilicus partiallyconcealed by the inner expansion of the peristome; decollated, leavingthree and a half to four convex whorls. The color is ochraceous buffto very light yellow or straw? (a) unicolor, (b) with a single narrowor broad band of chestnut, (c) with several revolving rows of smallrufous spots. The suture is deeply impressed and more or less ir-regularly crenulate by the thickening of the axial lirae into hollowwhite bulbs, becoming larger and more prominent on the summitof the last whorl, especially near the aperture. The sculpture con-sists of axial lirae, more widely spaced upon the earlier whorls, butquite densely disposed upon the last whorl. Within the umbilicalregion are five or six low cords crossed by the axial threads. The
250 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.
vertical aperture is ovate, pointed above. The peristome is doubleconsisting of an inner peritreme but slightly produced, and an outerperitreme moderately expanded on the outer margin but considerablyso on the inner, where it is recurved and bent back partially to concealthe umbilicus and then becoming adnate to the penultimate whorl,it again expands above the aperture into a deeply laminated pointedextension and bent back from the plane of the aperture. From thisupper expansion and back of it projects a siphonal tube, which ex-tends downward between the last and penultimate whorls and opensinto the umbilical space. This tube communicates with the interiorof the last whorl through the opening just back of the aperture in theupper angle of the whorl. The operculum is normal.Type.?Oat. No. 314945, U.S.N.M., a female specimen, comes fromthe Circulo cave in the Province of Camaguey, Cuba, and measures:Length, 13 mm.; greater diameter, 9 mm.; lesser diameter, 7 mm.;length of aperture within, 5 mm.; width of aperture within, 3.5 mm.Measurements of other specimens are as follows: Male, length,9.75 mm.; greater diameter, 8.1 mm.; lesser diameter, 5.75 mm.;length of aperture within, 4 mm.; width of aperture within, 3 mm.Female, length, 16.5 mm.; greater diameter, 11.25 mm.; lesser di-ameter, 8.75; length of aperture within, 6 mm.; width of aperturewithin, 5 mm.Specimens were collected in the following localities in the Provinceof Camaguey, Cuba: Cerro de Tuabaquey, El Cercado, San Francisco,Cueva del Circulo, La Loma, Corral de Cairije, Los Cangilones, etc.,all in the eastern part of the Sierra de Cubitas, by Biosca, Torre,Henderson, Simpson, Sifontes, and Salustio Garcia. This specieswas first found by Federico Biosca, professor of natural history inthe Institute of Camaguey.This subspecies differs from the typical subspecies chiefly in thelesser expansion of the peristome over the umbilicus and in its greatercolor variation.OPISTHOSIPHON (OPISTHOSIPHONA) PAREDONENSE, new species.Plate 38, figs. 9-11.The shell is oblong-ovate, quite solid, umbilicated, truncated,leaving three and a half to four convex whorls. The last whorl issolute for a distance of about two millimeters. The suture is deepand irregularly crenulate. The color range is from a pale russet topurplish brown, sometimes unicolored, but generally encircled belowthe periphery by a band of dark purple. The sculpture consists ofaxial threads more widely spaced upon the early postnuclear whorlsand increasing in number upon the succeeding whorls. On the lastwhorl the riblets are densely crowded (eight to nine to one millimeter)
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No. 2369. NEW MOLLUSKS FROM CUBA?TORRE AND HENDERSON. 251At the summit of the whorls, just below the suture, many of the ribletsare expanded into hollow bulbs, often several meeting to form onebulb. Spiral sculpture consists only of about twelve low cords withinthe umbilical region. The aperture is vertical, oval, somewhatpointed above; the peristome is duplex, the inner peritreme is notproduced; the outer peritreme is but slightly expanded, evenly so allaround in the typical form, not so in another subspecies; above theposterior angle of the aperture the expanded peristome is gatheredinto a triangular projection ending in a short siphonal tube, whichcurves backward and then toward the penultimate whorl. The tubecommunicates with the interior of the shell at a point just back of theaperture in the posterior angle. Operculum typical. Type measure-ments are given under subspecies.OPISTHOSIPHON (OPISTHOSIPHONA) PAREDONENSE PAREDONENSE, new subspecies.Plate 38, figa. 9-11.This, the typical subspecies, is characterized by the even expansionof the peristome about the aperture. It never touches the whorlabove.Type.?A female specimen, Cat. No. 314946, U.S.N.M., comes fromLos Paradones, Camaguey Province, Cuba. It measures: Length,10.75 mm.; greater diameter, 9.4 mm.; lesser diameter, 7 mm.; lengthof aperture within, 5.5 mm. ; width of aperture within, 4 mm. Anotherspecimen, a male, measures : Length, 10.75 mm. ; greater diameter, 8.15mm.; lesser diameter, 6.7 mm.; length of aperture within, 4.5 mm.;width of aperture within, 3.8 mm.Representatives of this subspecies come from Camaguey Province,Cuba at Los Paradones, a narrow pass through the Cubitas range ofmountains. They were collected by Salustio Garcia, Pablo Sifontes,Torre, Henderson, and Simpson.OPISTHOSIPHON (OPISTHOSIPHONA) PAREDONENSE TRANSITORIUM, new subspecies.Plate 39, figs. 1-2.A subspecies distinguished from the typical subspecies by reasonof the uniformly greater expansion of the peristome on the innerside. This is not, however, carried to the extent sufficient to concealthe umbilicus, but it does touch or impinge upon the next whorl above.All other features are identical.Type.?Cat. No. 314947, U.S.N.M., is from the entrance of LaGuanaja or Paso del Este, in the Cubitas Mountains, CamagueyProvince* Cuba, and measures: Length, 11.8 mm.; greater diameter,8.5 mm.; lesser diameter, 6.75 mm.; length of aperture within, 4.5mm.; diameter of aperture within, 3.5 mm. It is a female specimen.Male specimens are smaller.
252 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.OPISTHOSIPHON (OPISTHOSIPHONA) OBTURATUM. new species.Plate 39, figs. 3-6.The shell is ovate-conic, decollated, thin but solid, umbilicus eitherentirely closed by an affixed and adnate expansion of the peristomeor partially so by a less expanded peristome. The color is of a lightstraw to dark russet, unicolored or with one dark chestnut band;none are dotted. Whorls are convex with a deeply impressed suturewhich is crenulated by the thickening of alternate lirae into hollowwhite bulbs. The last whorl is adnate or slightly solute. Thesculpture consists of axial threadlike riblets which are not increasedin number upon the later whorls, there being about four to eachmillimeter. Spiral sculpture is confined to about four or five lowcords within the umbilical region. These are not apparent in perfectspecimens where the umbilicus is hidden by the peristome expansion.The aperture is vertical, oval, and slightly arched above. Thedouble peristome is white. The inner peritreme is not projectingbut slightly recurved over the outer peritreme. The latter is ex-panded all around, evenly and regularly so on the outer side. On theinner side it abruptly curves down to close completely or partially theumbilicus and to cover a space along the penultimate whorl. Finally,above the posterior angle of the aperture it again expands into aconcave triangular-shaped projection which is a part of and supportsa siphon which bends back and down to terminate in the suture justback of the aperture. The surface of the expanded outer peritremeis concentrically ribbed, most prominently so in the triangular pro-jection above. The operculum is normal, but shows an individualityin that the calcareous portion does not reach to the edge of the basalhorny plate. A tendency is also shown in the slight raising of theedges of the lamellae to suggest the Annularia structure.Three subspecies are indicated
:
OPISTHOSIPHON (OPISTHOSIPHONA) OBTURATUM OBTURATUM new subspecies.Plate 39, figs. 3-6.This, the typical subspecies, is characterized by the extreme expan-sion of the peristome which completely covers and seals the umbilicusand becomes adnate to the adjoining whorl. The last whorl is notsolute.Type.?Cat. No. 314948, U.S.N.M., is from Paso de Lesca (orCocinas) in the Sierra de Cubitas, Camaguey Province, Cuba. Itmeasures: Length, 15 mm.; greater diameter, 10 mm.; lesser diam-eter, 8.5 mm.; length of aperture within, 6 mm.; diameter of aper-ture within, 4 mm. It is a female specimen.Taken also at the Paso de la Escalera near Ermita Vieja in the samerange of hills, by Torre, Henderson, and Simpson.
No. 2369. NEW MOLLUSKS FROM CUBA?TORRE AND HENDERSON. 253OPISTHOSIPHON (OPISTHOSIPHONA) OBTURATUM SUBOBTURATUM, new subspecies.Plate 39, figs. 7-11.This subspecies differs from the typical form in that the umbilicusis not wholly closed nor concealed by the expansion of the peristomeand in that the last whorl is shortly solute. The color is generallydark and shows a tendency in some specimens to a single narrowdark band.Type.?A female, Cat. No. 314949, U.S.N.M., was collected by Torre,Henderson, and Simpson in the cave of Los Indios in the District ofBanao, western part of the Cubitas range, Province of Camaguey,Cuba, and measures: Length, 13.9 mm.; greater diameter, 8.9 mm.
;
lesser diameter, 7.5 mm.; length of aperture within, 4.6 mm.; diam-eter of aperture within, 3.75 mm.OPISTHOSIPHON (OPISTHOSIPHONA) OBTURATUM BANAOENSE, new subspecies.This form resembles the typical subspecies in having the umbilicuswholly sealed over by the expanded peristome, or, if not actuallysealed and closed thereby, at least wholly covered and concealed.The only persistent difference is one of size, specimens of this formbeing uniformly smaller. As in Opisthosiphon (Opisthosiphona)obturatum, shells are usually banded. The color of the tip and firstnepionic whorl is reddish.Type.?Cat. No. 314950, U.S.N.M., was collected by Torre nearBanao, in the western part of the Cubitas range, Camaguey Prov-ince, Cuba, and measures: Length, 11.75 mm.; greater diameter,8.75mm.; lesser diameter, 7.4 mm.; length of aperture within, 4.9mm., diameter of aperture within, 3.4 mm.OPISTHOSIPHON (OPISTHOSIPHONA) APERTUM, new species.Plate 40, figs. 1 and 3.The shell is ovate-conic, rather solid, umbilicated, decollated,narro vly truncated, leaving four convex whorls, the last being shortlysolute. The color is usually a pale straw of bright luster, but somespecimens are darker even to rich wine color. The lighter tintedshells have a narrow reddish brown sub-peripheral band. Thesculpture consists of fine axial threads, more widely spaced and ele-vated upon the earlier postnuclear whorls, but more crowded andflatter on the last whorl. Most of the axial threads are expandedinto very minute white bulbs at the suture, forming an inconspicuousirregular crenulation. Spiral sculpture confined to nine to ten lowinconspicuous cords within the umbilicus. The aperture is vertical,oval, and obtusely pointed above. The double peristome has theinner peritreme scarcely projecting, and the outer peritreme butslightly expanded on the right, but somewhat more so on the leftor inner side, though not reflected over the umbilicus nor sufficiently
254 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.extended to touch the adjoining whorl. Above the posterior angleof the aperture the peristome forms a triangular projection merginginto a siphon which recurves and points back toward the adjacentwhorl, though not usually forming a contact with it. The siphoncommunicates with the interior of the shell by a hole just within theaperture. The operculum is typical.Type.?A female specimen, Cat. No. 314951, U.S.N.M., was col-lected by Torre at Paso de Lesca in the Cubitas Mountains,Camaguey Province, Cuba, and measures: Length, 12.8 mm.; greaterdiameter, 9.75 mm.; lesser diameter, 7.4 mm.; length of aperturewithin, 5 mm.; width of aperture within, 4 mm. A male specimenfrom the same locality measures: Length, 10.9 mm.; greater diame-ter, 9 mm.; lesser diameter, 6.4 mm.; length of aperture within,4 mm.; width of aperture within, 3.5 mm.This species is characterized by its open umbilicus, moderateexpansion of the peristome, inconspicuous sutural crenulation, andits shining surface.OPISTHOSIPHON (OPISTHOSIPHONA) DALLI Torre and Henderson.Plate 40, figa. 2, 8, 9.Opisthosiphon dalli Torre and Henderson, A New Opisthosiphon from Cuba.Privately published June 25, 1920.Opisthosiphon (Opisthosiphona) dalli Henderson and Bartsch, Proc. U. S. Nat.Mus., vol. 58, p. 68, 1920.The shell is turbinate, solid, widely umbilicated, with the apexdecollated, leaving three and a half to four convex whorls, the lastbeing solute for a short distance, and carinated at the summit of thesolute portion. The shell is of a pale brown color without trace ofeither bands or spots, the apical portion being conspicuously lightreddish. The sculpture consists of densely crowded axial threadswhich are somewhat more distantly spaced upon the earlier post-nuclear whorls. Some of these axial threads are veiy minutelyexpanded into denticles at the summit, but not sufficiently so to lenda crenulated appearance to the deeply impressed sutures. The spiralsculpture consists of about ten or twelve low rounded cords withinthe umbilicus. The vertical aperture is roundly oval with a posteriorangle. The peristome is not obviously double as the inner peritremeis but slightly expanded and reflected over and appressed to the outer.The outer peritreme is but slightly expanded on the outer side; onthe inner side it is flatly expanded, though not sufficiently so to coverany portion of the umbilicus, nor more than sufficient barely to touchthe preceding whorl. At the posterior angle of the aperture theperistome extends into an upward expansion forming an open siphonaltube. The operculum is typical of the genus.Type.?Cat. No. 314941, U.S.N.M., is from the cave of El Circulo.
No. 2369. NEW MOLLV8KB FROM CUBA?TORRE AND HENDERSON. 255Measurements are: Length, 12.5 mm.; major diameter, 11.5 mm.;minor diameter, 8.75 mm.; length of aperture, 5.5 mm.; width ofaperture, 4.5 mm.This species is found at Camaguey Province, Cuba, on rocks aboutthe entrance of La Cueva del Circulo in the eastern portion of theCubitas Mountains.This very handsome species is easily distinguished by its hardpolished old-ivory surface which, to the naked eye, seems to besculptureless and smooth, by its globose shape and relatively greaterproportion of breadth to length, and, finally, by its reddish tip andentire lack of color bands or spots.OPISTHOSIPHON (OPISTHOSIPHONA) BIOSCAI, new species.Plate 40, figs. 4 and 6.The shell is ovate-oblong, rather thin but strong; apex decollated,leaving three and a half to four moderately convex whorls, the lastbeing very slightly solute. The umbilicus is (a) almost wholly closedor (b) partially so by an expansion of the inner peristome. The coloris of a very light straw ranging through slightly darker yellowishtints to an amber or wine color. A series of brown spots encirclesall the whorls, there being five such series on the last whorl of theholotype, but as many as eight in some specimens. In no instanceare there solid color bands. The sculpture consists of axial thread-like riblets somewhat arched forward below the suture and neverquite regularly disposed. In the typical subspecies these riblets arecoarser (five to the millimeter) and these are partially effaced in themiddle portion of the whorls, especially on the last two. In anothersubspecies the axial threads are finer (ten to the millimeter) and arenot effaced. At the sutures, which are deeply impressed, most ofthe riblets, either singly or in tufts, form hollow white bulbs projectingup to touch the next whorl above, thus irregularly crenulating thesutures. A series of spiral cords are present within the umbilicus.These are crossed by the axial threads forming small projectinglamellar processes at the intersections. The vertical aperture isovate and obtusely angled above. The peristome is double, havingan inner peritreme that hardly projects and an outer peritreme whichis but moderately expanded on the outer side but widely so on theinner side, even to covering (a) almost wholly, or (6) partially theumbilical opening above which it spreads over and (a) becomesadnate to the adjacent portion of the contiguous whorl or (b) merelytouches it; it then forms above the aperture a delta-shaped expansion,roughly laminated on its face. This expansion supports and partiallymerges into a recurving siphon which bends down into the spaceback of the solute portion of the last whorl. This siphon opens intothe shell by a small puncture just back of the aperture.Measurements are given under the subspecific heads.
256 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 59.This species seems to be more generally distributed throughout theCubitas range than any other of the group. In the various localitiesfrom winch it has been taken some divergence in minor details isnoted, but the two following subspecies account for the major differ-ences in the shell characters.OPISTHOSIPHON (OPISTHOSIPHONA) BIOSCAI BIOSCAI, new subspecies.Plate 40, figs. 4 and 6.This, the typical subspecies, is determined by the following threecharacters: The maximum expansion of the peristome, winch almostwholly covers the umbilicus, though never quite closing it; the coarseraxial riblets (five to the millimeter), winch are more strongly devel-oped in the upper and lower portions of each whorl, and, finally, theuniformly larger size of the shell.Type.?A female specimen, Cat. No. 314952, U.S.N.M., from ElCercado measures: Length, 15 mm.; greater diameter, 9.25 mm.; lesserdiameter, 7.5 mm.; length of aperture within, 4.5 mm.; width ofaperture within, 3.75 mm. A male specimen measures: Length, 11.75mm.; greater diameter, 7.75 mm.; lesser diameter, 6 mm.; length ofaperture within, 3.75 mm.; width of aperture within, 3 mm.Specimens were collected at El Cercado and Los Cangilones, SanFrancisco, Paredones, Paso de la Escalera, de las Cocinas, de lasTrincheras, all in the Cubitas Mountains, Camaguey Province, Cuba,by Torre, Henderson, Simpson, Biosca, and Sifontes.OPISTHOSIPHON (OPISTHOSIPHONA) BIOSCAI TERSUM, new subspecies.The shell differs from the typical subspecies in being uniformlysmaller, in the finer axial sculpture (ten riblets to the millimeter), inthe equal prominence of these axial riblets over the entire portionof each whorl and in the lesser expansion of the peristome over theumbilical region. In many cases the expanded peristome hardlymore than touches the whorl above and is never adnate to it.Tijpe.?A female, Cat. No. 314953, U.S.N.M., from "La Providen-cia" farm, measures: Length, 11.7 mm.; greater diameter, 7.2 mm.;lesser diameter, 6 mm.; length of aperture within, 3.8 mm. : width ofaperture within, 3 mm. A male specimen measures: Length, 9.5 mm.
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greater diameter, 7 mm. ; lesser diameter, 5.5 mm. ; length of aperturewithin, 3.5 mm. ; width of aperture within, 2.9 mm.This subspecies was collected by Torre, Henderson, and Simpsonat "La Providencia, " El Cercado, entrance to Paso de Lesca, ona small knoll; Camaguey Province, Cuba.OPISTHOSIPHON (OPISTHOSIPHONA) SALUSTII, new species.Plate 40, figs. 5 and 7.The shell is ovate-conic, rather thin but strong, widely umbilicated,the apex decollated, leaving three and a half convex whorls, the lastbeing shortly solute. The color is a pale straw with three to seven
No. 2369. NEW MOLLVSKS FROM CUBA-r-TORRE AND HENDERSON. 257
series of brown spots encircling the whorls. The sculpture consistsof axial sublamellar riblets, four to the millimeter, on the earlierpostnuclear whorls and almost double that number on the lastwhorl, the spaces between being much wider than the riblets. Amere trace of an obsolete spiral sculpture may be detected in somespecimens. At the sutures, every second or third riblet ends in awhite lamellar expansion which produces an irregular crenulationalong the deeply impressed sutures. There are ten to twelve promi-nent spiral cords within the umbilicus. The aperture is oblong-oval, obtusely angled above. The double peristome consists of ascarcely projecting inner, and a moderately expanded outer, peritremeThe greater expansion is on the inner side but is not sufficient tocover, even partially, the umbilicus, nor actually to touch the ad-jacent whorl above. Over the angle of the aperture the peristomeexpands into a delta shaped projection supporting a siphon whichbends back and down into the space between the solute last whorland the whorl above. The operculum is typical of the genus.The type, Cat. No. 314954, U.S.N.M., is a female specimen from"Santa Rita" farm and measures: Length, 11.5 mm.; greater diam-eter, 8.25 mm.; lesser diameter, 6.5 mm.; length of aperture within,4 mm.; width of aperture within, 3.25 mm. Another specimen, amale, measures: Length, 8 mm.; greater diameter, 7.25 mm.; lesserdiameter, 5.1 mm.; length of aperture within, 3 mm.; width of diam-eter within, 2.5 mm.This subspecies was collected by Salustio Garcia and P. Sifonteat "Santa Rita" farm near La Entrada and El Cercado; near LosCangilones by the banks of the river Maximus, all in the easternextremity of the Cubitas Mountains, Camaguey Province, Cuba.OPISTHOSIPHON (OPISTHOSIPHONA) EVANIDUM, new species.Plate 41, figs. 1-2.The shell is elongate-conic, with open umbilicus and apex decol-lated, the last whorl being solute for a distance of 5 mm. The coloris white without trace of color markings of any sort in the type, butshowing in a subspecies a feeble tendency to encircling rows of spots.The sculpture consists of axial riblets somewhat irregularly dis-posed and about twice as numerous on the last whorl as upon theearlier postnuclear whorls, in all cases the intervals between the ribsbeing wider. At the summit of the whorls every second or thirdriblet is expanded into a small inconspicuous hollow bulb , giving tothe suture an irregular crenulation. Within the umbilicus are aboutten low spiral cords. The aperture is vertical, oblong and obtuselyangled above; the inner peritreme of the peristone is slightly pro-jecting; the outer peritreme is slightly expanded, a trifle more so onthe inner side, but not sufficient even partially to conceal the umbil-27177?21?ProcN.M.vol.59 17
258 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.icus nor to touch the whorl above. Above the aperture the outerperitreme is expanded to form a delta-shaped projection and endingin a siphon which bends back and sometimes downward into thespace between the solute last whorl and the whorl above. Theoperculum is typical of the genus.This species includes two subspecies as follows:OPISTHOSIPHON (OPISTHOSIPHONA) EVANIDUM EVANIDUM, new subspecies.Plate 41, figs. 1-2.This, the typical subspecies, is distinguishable chiefly by its uni-formly greater size and by its whiter coloration.Type.?Cat;. No. 314955, U.S.N.M., is from the estate of "LaLoma '? near El Tuabaguey in the eastern part of the Cubitas Moun-tains, in the Province of Camaguey, and was collected by Pablo Si-fontes, jr. It measures: Length, 13 mm. ; greater diameter, 8.5 mm.
;
lesser diameter, 6.75.; length of aperture within, 4 mm.; width ofaperture within, 3 mm.OPISTHOSIPHON (OPISTHOSIPHONA) EVANIDUM DEGENERATUM, new subspecies.Plate 41, figs. 3 and 8.This subspecies is characterized only by its persistently smallersize, but in all other respects it could hardly be separated from thetypical subspecies. The spiral cords within the umbilicus arereduced to the minimum, in some specimens being scarcelyobservable.Type.?Cat. No. 314956, U.S.N.M., was collected by Torre and P.Sifontes, Sr., at Santa Cruz, a detached hill, on the right bank of theriver Maximus opposite u Los Cangilones" in the Province of Cama-guey, Cuba. It measures: Length, 11. mm.; greater diameter,7.25 mm.; lesser diameter, 5.75 mm.; length of aperture within, 3.75mm.; width of aperture within, 3 mm.OPISTHOSIPHON (OPISTHOSIPHONA) OCCULTUM, new species.Plate 41, figs. 4, 6, and 7.The shell is ovate-conic, spire decollated, leaving three and a halfto four moderately convex whorls, the last very slightly solute, theumbilicus being almost wholly covered by an expansion of theperistome. The color ranges from a light straw to a light amberand is always ornamented by encircling rows of elongated chestnutspots which appear upon the reflected portion of the peristome.These spots are often so exposed as to give an appearance of axialrows as well as spiral; in no instances are there solid color bands.The sculpture consists of axial riblets, more widely spaced upon theearly postnuclear whorls and more crowded upon the last whorl,where there are five to six to a millimeter. Many of these axial
No. 2369. NEW MOLLUSKS FROM CUBA?TORRE AND HENDERSON. 259
riblets expand into hollow white bulbs at the suture above, impart-ing to it an irregualr crenulate appearance. Spiral sculpture isconfined to the umbilical wall and consists of a scries of low cordswhich are, in perfect specimens, concealed by the expanded peristomecovering the umbilicus. The aperture is vertical, oblong-ovate andobtusely angled above; the peristome is doubled, the inner peritremeof which is decidedly projecting; the outer peritreme is broadly ex-panded and bent forward on the outer or right side of the aperture;it is less broadly expanded but somewhat fluted at the lower portionof the aperture; on the inner or left side of the aperture it is suddenlyrecurved back, forming a notch and completely covering the umbili-cus except for a slight chink behind the notch; it also covers and isadnate to the whorl above; above the posterior angle the outerperitreme is strongly expanded into a projection affixed to the whorlabove on its inner and flaring out on its outer side; the face of thisprojection is roughly, concentrically ribbed. Back of this projectionis a small siphon which deflects backwards and downwards intothe narrow space between the solute portion of the last whorl andcommunicating with the axis of the shell. Communication with theinterior of the shell is through a small pore near the anterior angle ofthe aperture. The operculum is typical of the genus.Type.?A female specimen, Cat. No. 314957, U.S.N.M., from Lomade Borje, measures: Length, 13.8 mm.; greater diameter, 7.8 mm.;lesser diameter, 6.75 mm.; length of aperture within, 4.6 mm.; widthof aperture within, 3.5 mm. The smallest specimen observed in alarge series has a length of 10.75 mm.The type lot is from the Loma de Borje, an isolated hill near theeastern end of the Cubitas range, on the right side of the river Maxi-mus, and was collected by Miss Barbara Hubbard. Other lots arefrom " Santa Cruz" between "Las Minas" and "Los Cangilones" andin " Yaguajay," all localities in a series of isolated hills near "Borje,"in the municipality of Nuevitas, Province of Camaguey, Cuba; col-lected by Torre.Specimens from "Borje" are usually somewhat larger than thosefrom other localities.OPISTHOSIPHON (OPISTHOSIPHON) PROTRACTUM, new species.Plate 41, figs. 5 and 11.The shell is oblong-ovate, spire decollated, leaving three and ahalf whorls moderately convex, the last whorl shortly solute, theumbilicus completely closed by an expansion of the peristome. Thesuture is deeply impressed and crenulated. The color is chestnut,rather shining and with a series of indistinct interrupted color-bands of a darker chestnut. There are seven of these narrow bandson the body whorl of the type specimen. The sculpture consists of
260 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.
axial threads, somewhat wavy and separated by spaces of doubletheir width. These threads are somewhat more numerous upon thelast two whorls than upon the earlier postnuclear ones, there beingabout six to the millimeter. At the summit of the whorls thesethreads are somewhat tufted, two or three uniting and expandedinto hollow whitish bulbs, thus rendering the sutures irregularlydenticulate. Spiral sculpture consists of obsolete cords made visibleonly by slight swellings at their intersections with the axial threadsand only observable near the summits of the early postnuclearwhorls. Stronger spiral cords are present on the umbilical walls.The aperture is vertical, oblong-ovate, and hardly angled above;the peristome is double, the inner peritreme of which is considerablyproduced and sculptured upon its outer side in conformity with thesurface of the shell; the outer peritreme is but moderately expandedand somewhat recurred backwards; on the inner side it is extendedback and covers closely the umbilicus and is adnate to the adjoiningwhorl; above the aperture it is irregularly expanded into an ear-shaped projection, which supports a siphon which points directlybackward and inward, ending in the space between the solute lastwhorl and the penultimate whorl. This siphon communicates withthe interior of the shell through a small puncture within the apertureat its posterior end. The operculum is typical of the genus.Type.?Cut. No. 314958, U.S.N.M., was collected by Dr. ThomasBarbour in the Sierra de San Juan de los Perros, near Punta Alegrein the northern part of the jurisdiction of Moron, Province of Cama-guey, Cuba. It measures: Length, 16.25 mm.; greater diameter,9 mm.; lesser diameter, 7.75 mm.; length of aperture within, 5.4 mm.;width of aperture within, 4.25 mm.Some specimens are lighter in color than the type, in which casethe color bands are more readily observed. In no cases are thesecolor bands solid, but are broken more or less into elongated spots.OPISTHOSIPHON (OPISTHOSIPHON) JUDASENSE, new species.Plate 41, figs. 9, 10.The shell is elongate-ovate, the spire decollated, leaving three anda half to four moderately convex whorls, the last being very slightlysolute. The sutures are deeply impressed and denticulate. Thecolor ranges from chestnut, in the type, to dark straw and is encir-cled by a series of interrupted narrow color bands of a darker tintthan the background, but very indistinct in the darker specimens.These encircling color bands are produced upon the expanded peri-stome. The sculpture consists of fine axial threads widely spacedupon the early postnuclear whorls and constantly increasing innumber upon the later whorls and reaching their maximum numberof ten to the millimeter just back of the aperture. About everysecond or third of these axial threads are expanded at the summit of
No. 2369. NEW HOLLUSKS FROM CVBA?TORRE AND HENDERSON. 261the whorls into white hollow sublamellar bulbs. The spiral sculp-ture is reduced upon the outer surface of the shell to obsolete cordsrendered visible only upon the early postnuclear whorls by slightswellings of the axial threads. On the umbilical wall are a numberof spiral cords. The vertical aperture is oblong-ovate, not angledabove; the peristome is double: the inner peritreme very slightlyprojecting; the outer peritreme is rather widely expanded, flaringforward except over the umbilical portion, where it is sharply deflectedbackwards and partially covers the umbilicus, above which it againflares forward and is adnate to the preceding whorl ; above the aper-ture it is expanded backwards into a delta-shaped projection, whichis coarsely concentrically ribbed upon its face and terminates in athick short siphon bent back and downward into the space be-tween the solute last whorl and the adjoining whorl. This siphoncommunicates with the interior of the shell through a large porewithin the posterior margin of the aperture. The operculum istypical of the genus.Type.?Cat! No. 314959, U.S.N.M., was collected by Doctor Bar-bour at the Sierra de Judas in the jurisdiction of Mayajigua, Prov-ince of Santa Clara, Cuba, and measures: Length, 14.4 mm.; greaterdiameter, 8.S mm.; lesser diameter, 6.5 mm.; length of aperturewithin, 5mm.; width of aperture within, 3.9 mm.This species differs from its nearest ally by its short inner peritreme,its greatly expanded outer peritreme, and its umbilicus but partiallyconcealed. Its sculpture is much finer upon the last whorls, theaxial threads being straighter.OPISTHOSIPHON (OPISTHOSIPHON) DETECTUM, new species.Plate 42, fig. 1.The shell is ovate-conic, the spire decollated, leaving three and ahalf convex whorls, the last shortly solute, openly umbilicated. Thecolor is light brown suggesting bronze, somewhat darker on the firstpostnuclear whorl and with no color bands or spots whatever. Thesculpture consists of widely spaced axial lamellar riblets; these arevery thin and sharp and white in color, each riblet being expanded atthe suture above into hollow lamellar tubercles and thus crenulatingthe deeply impressed suture. These axial riblets possess just belowthe suture a slight thickening which represents an obsolete spiralcord; on the umbilical wall are several low spiral cords. The apertureis vertical, rounded ovate, but without angle above; the inner peri-treme is very slightly projecting; the outer peritreme is moderatelyexpanded throughout and slightly fluted on the inner projection;it is not expanded over the umbilicus, but touches the whorl above.Above the aperture it projects upwards and slightly backwards andmerges into a sharply recurved siphon which passes down into thethe space behind the solute last whorl. The siphon communicates
262 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59.with the inside of the shell through a pore or small opening withinthe aperture on its posterior margin. The operculum is typical ofthe genus.Type.?Cat. No. 314960, U.S.N.M., was collected by Torre at LasCasimbas de las Llanadas, Sierra de Canoa, Mayajigua, Province ofSanta Clara, Cuba. It measures: Length, 10 mm.; greater diameter,6.8 mm. ; lesser diameter, 5 mm, ; length of aperture within, 3.25 mm.
;
width of aperture within, 2.75 mm.OPISTHOSIPHON (OPISTHOSIPHON) OBTECTUM, new species.Plate 42, figs 2-3.The shell is elongate-ovate, the spire decollated, leaving three and ahalf whorls which are convex and separated by impressed sutures;the last whorl is scarcely solute. The color is a dark straw, somewhatgolden, the first postnepionic whorl being often slightly darker; obso-lete color spots are faintly distinguishable on some specimens. Thesculpture consists of widely spaced, quite regularly disposed, axialriblets which, in the typical subspecies, are sublamellose. Practicallyall the riblets are expanded into hollow lamellar white bulbs at thesummit of the whorls, thus finely denticulating the sutures; obso-lete spiral elements are so reduced as to leave slight traces in a thick-ening of the axial riblets at the points of intersection. These are tobe observed only in the first postnuclear whorls and sometimes notto be detected at all. Low, spiral cords are present on the umbilicalwall. The vertical aperture is slightly ovate without angle above;the inner peritreme is projecting and slightly bent outward; theouter peritreme is moderately expanded about evenly on all sides;on the inner side it is suddenly reflected backwards and covers theumbilical opening, though not widely extending over the umbilicalregion; it then touches and is appressed to the whorl above; abovethe aperture it is moderately expanded and projected backwards,from which projection begins a recurved siphon which points down-ward into the widened suture behind the aperture. The siphon com-municates with the interior of the shell through a small pore justwithin the aperture on its posterior margin. The operculum istypical of the genus.Measurements are given under the subspecific titles.OPISTHOSIPHON (OPISTHOSIPON) OBTECTUM OBTECTUM, new subspecies.Plate 42, figs. 2-3.This, the typical subspecies, has the axial riblets somewhat morepronounced. The outer peritreme is moio expanded and the generalshape of the shell is more slender than in Opisthosiphon (Opisthosiphon)obtectum tenuicostatum.
No. 2369. NEW MOLLVSKS FROM CUBA?TORRE AND HENDERSON. 263Type.?Cat. No. 314961, U.S.N.M., was collected by Torre at ElPalenque tie Taguayabon, near llemedios. It measures: Length, 13.1mm.; greater diameter. 8 mm.; lesser diameter, 6 mm.; length ofaperture within, 4 mm.; width of aperture within, 3.5 mm. Anotherspecimen, a male, measures: Length, 10.5 mm.; greater diameter, 6.4mm.; lesser diameter, 5 mm.This subspecies was also found at the Cuevo del Muerto in theSierra de Meneses, District of Yaguajay, by Torre; also from the Ca-verna Las Damas by the bank of the river Zazoe, near Guayos, byGoodrich. These localities are all in the Province of Santa Clara,Cuba,OPISTHOSIPHON (OPISTHOSIPHON) OBTECTUM TENUICOSTUM, new subspecies.Plate 42, figs. 4, 5.This differs from the typical subspecies in its somewhat moreinflated form, by the more narrowly expanded peristone and itsmore flattened axial threads. In this subspecies evidences of spiralsculptural elements, except those within the umbilicus, are almostwholly obsolete.Type.?Cat. No. 314962, U.S.N.M., was collected by Torre at Ceirode La Puntilla, near Remedios, Province of Santa Clara, Cuba. Itmeasures: Length, 11 mm.; greater diameter, 7 mm.; lesser diameter,6.1 mm.; length of aperture within 3.9 mm.; width of aperture within,3.4 mm. A male specimen measures: Length, 9 mm.; greater diam-eter, 6.25 mm.; lesser diameter, 5 mm.OPISTHOSIPHON (OPISTHOSIPHON) LAMELLICOSTATUM, new species.Plate 42, figs 6, 7.The shell is elongate-conic, the apex decollated, having three anda half to four convex whorls, the last nonsolute ; the umbilicus closedby expansion of the peristome; the sutures well impressed. Thecolor is yellowish straw, slightty darker on the first postnuclearwhorl; no color bands or spots present. The sculpture consists ofwidely spaced, regularly disposed, lamellar riblets. somewhat morewidely spaced on the' early postnuclear whorls. At the summit olthe whorls these riblets are expanded into hollow, white, bladeliketubercles which rather regularly crenulate the suture. Betweenthese axial riblets and parallel with them is a series of exceedinglyminute crinkly lirations, visible only through a lens; the spiralsculpture is obsolete, being merely indicated by V>lad(diko projectionson the axial riblets, more apparent upon the earlier whorls. On theumbilical wall are a number of obsolete axial cords also indicated bya series of flat tubercles upon the axial riblets. The aperture is ovate,obsoletely angled above; the peristome is double, the inner peritremeslightly projecting; the outer peritreme is broadly expanded, about
264 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 59.equally so all around, somewhat fluted and coarsely, concentricallysculptured with hollow ribs on its face; at the umbilical region it issuddenly deflected backwards and is closely appressed into the um-bilicus, completely sealing it. It is adnate to the whorl above andabove the aperture is further expanded into a delta shaped projec-tion, deflected backwards terminating in a siphon which is projecteddownwards into the suture just back of the aperture; the siphon com-municates with the interior of the shell by a puncture just within theaperture at its posterior angle. The operculum is typical of the genus.Type.?Cat. No. 314963, U.S.N.M., was collected by Torre at Bo-queron del Tatibonico, on the boundary between the Provinces ofSanta Clara and Camaguey. It is a female specimen, and measures:Length, 12mm.; greater diameter, 7 mm.; lesser diamoter, 5.5 mm.;length of aperture within, 3.5 mm.; width of aperture within, 2.75mm. A male specimen from the same lot measures: Length, 11 mm.;greater diameter, 6.5 mm.; lesser diameter, 5 mm.EUTUDORA (EUTUDOROPS) PARADOXUM, new species.Plate 42, figs. 8, 9.The shell is elongate-ovate, the apex usually decollated, leavingfour to four and a half rather convex whorls, the last slightly solute.Sutures deeply impressed; umbilicus closed by an expansion of theperistome. The color is white, sometimes with a slight yellowishcast, and having six to eight encircling bands of light chestnut spots;some specimens having no color markings whatever. The sculptureconsists of axial sublamellar riblets, widely spaced upon the earlierpostnuclear whorls, and densely crowded upon the last whorl, wherethey become threadlike; at the summit of the whorls the riblets areexpanded in varying degrees into hollow, narrow bulbs and irregu-larly crenulate the sutures; spiral sculpture consists of more or lessobsolete cords, not always to be distinguished, but generally indicatedby prominences upon the axial riblets at their points of intersection.On the umbilical wall the spiral cords are more prominent. The ver-tical aperature is almost round, without angle above; the inner peri-treme is strongly projecting; the outer peritreme consists merely of aslightly exaggerated axial riblet, between which and the rim of theaperture are seven or eight normal axial riblets. The outer peritremeis slightly more expanded on the inner side and is suddenly deflectedbackward to cover and seal the umbilicus well within the umbilicalopening, and is adnate to the whorl above; a small expansion abovethe aperture is bent backward to form a siphon which projects intothe space behind the solute portion of the last whorl; the siphon com-municates with the interior of the shell through a puncture just withinthe aperture in its posterior portion. The operculum is typicallyTudoroid, the lamellae springing from the chondroid plate being bent
No. 2369. NEW MOLLUSKS FROM CUBA?TORRE AND HENDERSON. 265outward to parallel the plate and overlapping to form a flat surface,thus forming a double operculum with a deep groove around itsmargin.Type.?A female specimen, Cat. No. 314964, U.S.N.M., wascollected by Torre and Sifontes at Santa Cruz Mountains, on theright bank of the River Maximus, opposite Los Cangilones, in theProvince of Camaguey, Cuba. It measures: Length, 10.8 mm.;greater diameter, 6 mm.; lesser diameter, 5.25 mm.; length of aper-ture within, 3.25 mm.; width of aperture within, 3 mm. A malespecimen from the same lot, with tip present, measures: Length, 10mm.; greater diameter, 5.1 mm.; lesser diameter, 4.75 mm.This species, which bears a strong resemblance through, all its shellcharacters to the numerous species herein described from the sameregion, must nevertheless be placed in the genus Eutudora by reasonof its operculum, which is typical of that genus. It falls naturallyinto the group of Eutudora torquatum of the subgenus Eutudorops,by reason of its sculptural characters.
EXPLANATION OF PLATES.Plate 38.Fig. 1. Opisthosiphon (Opisthosiphona) berryi Clapp.2. Opisthosiphon (Opisthosiphona) berryi Clapp.3. Opisthosiphon (Opisthosiphona) berryi Clapp.4. Opisthosiphon (Opisthosiphona) berryi Clapp.5. Opisthosiphon (Opisthosiphona) berryi semiapertum, new subspecies.6. Opisthosiphon (Opisthosiphona) berryi semiapertum, new subspecies.7. Opisthosiphon (Opisthosiphona) berryi semiapertum, new subspecies.8. Opisthosiphon (Opisthosiphona) berryi semiapertum, new subspecies, type.9. Opisthosiphon (Opisthosiphona) paredonense, new species.10. Opisthosiphon (Opisthosiphona) paredonense, new species.11. Opisthosiphon (Opisthosiphona) paredonense, new species, type.Plate 39.Fig. 1. Opisthosiphon (Opisthosiphona) paredonense transitorium, new subspecies,2. Opisthosiphon (Opisthosiphona) paredonense transitorium, new subspecies,type.3. Opisthosiphon (Opisthosiphona) obturatum, new species.4. Opisthosiphon (Opisthosiphona) obturatum, new species, type.5. Opisthosiphon (Opisthosiphona) obturatum, new species.6. Opisthosiphon (Opisthosiphona) obturatum, new species.7. Opisthosiphon (Opisthosiphona) obturatum subobturatum, new subspecies,type.8. Opisthosiphon (Opisthosiphona) obturatum subobturatum, new subspecies.9. Opisthosiphon (Opisthosiphona) obturatum subobturatum, new subspecies.10. Opisthosiphon (Opisthosiphona) obturatum subobturantum, new subspecies.11. Opisthosiphon (Opisthosiphona) obturatum subobturatum, new subspecies.Plate 40.Fig. 1. Opisthosiphon (Opisthosiphona) apertum, new species.2. Opisthosiphon (Opisthosiphona) dalli Torre and Henderson.3. Opisthosiphon (Opisthosiphona) apertum, new species, type.4. Opisthosiphon (Opisthosiphona) bioscai, new species, type.5. Opisthosiphon (Opisthosiphona) salustii, new species.6. Opisthosiphon (Opisthosiphona) bioscai, new species.7. Opisthosiphon (Opisthosiphona) salustii, new species, type.8. Opisthosiphon (Opisthosiphona) dalli Torre and Henderson, type.9. Opisthosiphon (Opisthosiphona) dalli Torre and Henderson.Plate 41.Fig. 1. Opisthosiphon (Opisthosiphona) evanidum, new species, type.2. Opisthosiphon (Opisthosiphona) evanidum, new species.3. Opisthosiphon (Opisthosiphona) evanidum degeneratum, new subspecies, type.4. Opisthosiphon (Opisthosiphona) occultum, new species, type.5. Opisthosiphon (Opisthosiphon) protractum, new species.6. Opisthosiphon (Opisthosiphona) occultum, new species.7. Opisthosiphon (Opisthosiphona) occultum, new species.8. Opisthosiphon (Opisthosiphona) evanidum degeneratum, new species.9. Opisthosiphon (Opisthosiphon) judasense, new species.10. Opisthosiphon (Opisthosiphon) judasense, new species, type.11. Opisthosiphon (Opisthosiphon) protractum, new species, type.266
No. 2369. NEW MOLLUSKS FROM CUBA?TORRE AND HENDERSON. 267Plate 42.Fig. 1. Opisthosiphon (Opisthosiphon) detectum, new species, type.2. Oinsthosiphon (Opisthosiphon) obtectum, new species, type.3. Opisthosiphon (Opisthosiphon) obtectum, new species.4. Opisthosiphon (Opisthosiphon) obtectum tenuicostum, new subspecies, type.5. Opisthosiphon (Opisthosiphon) obtectum tenuicostum, new subspecies.6. Opisthosiphon (Opisthosiphon) lamellicostatum, new species, type.7. Opisthosiphon (Opisthosiphon) lamellicostatum, new species.8. Eutudora (Eutudorops) paradoxum, new species, type.9. Eutudora (Eutudorops) paradoxum, new species.

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