vol. 50 SmithsonianMiscellaneous CollectionsVol IV Quarterly issue Part 4 NEW AND CHARACTERISTIC SPECIES OF FOSSIL MOL-LUSKS FROM THE OIL-BEARING TERTIARY FORMA-TIONS OF SANTA BARBARA COUNTY, CALIFORNIABy RALPH ARNOLDPaleontologist, U. S. Geological SurveyIntroductionDuring- an examination of the Santa Maria and Summerland oildistricts, Santa Barbara County, California, by the writer, assisted byRobert Anderson and H. R. Johnson, in the summer of 1906, fossilswere found representative of several geological horizons in the Ter-tiary. Many of these are well known or previously described species,but some of them are new forms. In the following paper several ofthe new forms are described and figured ; while a few of those pre-viously described are simply figured, and a brief note concerning theiroccurrence is inserted in the explanation accompanying each draw-ing. It has been deemed advisable to insert figures of the old speciesin this paper because the descriptions and illustrations of these formsare in publications inaccessible to most readers, and it is essential forthe proper identification of the faunas that certain of the old speciesbe known. The differentiation of the various geologic formationsin the southern coast ranges of California depends almost entirelyupon their paleontology, so that it has been the aim of the writer togive in this paper some of those species which will aid in the deter-mination of the horizon of the various faunas found in that region.These fossils, together with some others, will be figured on plates ixto xvii, Bulletin 321, and plates xn to xxvi, Bulletin 322, U. S. Geo-logical Survey. 419 420 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 5°The new Eocene forms, Turritclla (martinezensis Gabb, var. ?),lompocensis, and Pccten yneziana, are from the brownish sandstoneof the Tejon formation which makes up a considerable portion of theSanta Ynez Range south of Lompoc and Santa Ynez. Within thisformation in the territory mentioned are found the following fossils : List of Eocene (Tejon Formation) Fossils from Western End of SantaYnez Range(Those marked "a" are found at locality No. 4507, just above the San Julianranch house about 10 miles southeast of Lompoc, the type locality of Pectenyneziana; those marked "b" are found at locality No. 4509, a float boulderfound in sharp turn in road in San Miguelito Canyon, 4^ miles southwest ofLompoc, the type locality of Turritclla {martinesensis Gabb. var.?) lompo-censis. )Cardinm brewerii Gabb a .Codakia (?) species 3 .Conus cf. homii Gabb.Crassatellites colliiia Conrad a b .Dosinia elevata Gabb a .Fusus occidentals Gabb a .Fiats maminillatus Gabb a .Glycymeris cf. veatchii Gabb, var. major Stanton a b .Mactra cf. uvasana Conrad.Meretrix uvasana Conrad a .Meretrix, species.Neverita ? species.Nucula truncata Gabb.Ostrca idricensis Gabb a .Pecten (Chlamys) yneziana, new species a '\Phacoidcs cumulata Gabb.Phacoides (Miltha?) , species 3 .Tellina (?), species.Turritclla (martinezensis Gabb, var.?) lompocensis, new variety 3 .Turritclla uvasana Conrad a .Venericardia planicosta Lamarck 3 .The lower Miocene or Vaqueros formation is stratigraphicallvabove, but closely associated with, the Tejon, and consists largely ofcoarse conglomerate and sandstone, with some associated limestonenear the top. The new species, Purpura vaquerosensis, Pecten van-vlecki, and Modiolus ynezianus, are from the sandstone portion.Associated with the above forms in the Vaqueros formation, in thewestern end of the Santa Ynez Range, are the following species : arnold] fossil mollusks from california 421List of Lower Miocene (Vaqueros Formation) Fossils from Western Endof Santa Ynez Range(Those marked "a" are from locality No. 4504, three-fourths of a mile upridge northeast of San Julian ranch house, 10 miles southeast of Lompoc, thetype locality of Modiolus ynezianus ; those marked "b" are from locality No.4478, 2 miles south of Santa Ynez, on knoll just east of mouth of BallardCanyon, the type locality of Pecten vanvlecki.)Balanus cf. cstrellanus Conrad.Cardium aff. quadrigenarium Conrad a .Chione cf. mathewsonii Gabb.Conns, species.Crassatvllites, species.Meretrix ( ?) species.Modiolus ynezianus, new species a .Mytilus cf. mathewsonii Gabb.Ostrea eldridgei Arnold a b .Ostrea, new species, near titan Conrad a .Pecten {Pecten) vanvlecki, new species b .Pecten (Lyropecten) bowersi Arnold.Pecten (Lyropecten) crassicardo Conrad.Pecten (Amusium) lompocensis Arnold.Pecten (Lyropecten) magnolia Conrad ab .Pecten (Chlamys) sespeensis, var. hydei Arnold b .Purpura vaquerosensis, new species.Solen, species.Terebratalia kennedyi Dall.Turritella, species indeterminate.Turritella ineziana Conrad.Turritella variata Conrad (young).The Fernando formation in the Santa Maria district is wide-spread, and consists largely of soft shale, sandstone, and more or lessincoherent conglomerate, usually resting unconformably above theMonterey or middle Miocene shale. The most fossiliferous local-ities appear to represent a fauna of lower Pliocene age, although theformation as a whole is believed to extend down into the upperMiocene and upward into the Pleistocene.The following new species and varieties are described from theFernando formation in the Santa Maria district, all of the localitiesbeing north of the Santa Ynez River : List of New Species and Varieties of Fossils from the Fernando Forma-tion (Largely Lower Pliocene), Santa Maria DistrictLymncea alamosensis, new species.Drillia graciosana, new species.Drillia waldorfensis, new species.Bathytoma carpenteriana Gabb, var. fernandoana, new variety. 422 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOE. 50Cancellaria crawfordiana Dall, var. fuglcri, new variety.Nassa Waldorf'ensis, new species.Ocinebra micheli Ford, var. waldorfensis, new variety.Leda orcutti, new species.Phacoides nuttallii Conrad, var. anteccdens, new variety.Spisula catilliformis Conrad, var. alcatrazensis, new variety.Spisula sisquocensis, new species.Associated with these at the various localities are the following"(mostly previously described) species:Partial List op Fernando (Upper Miocene-Puocene-PlEistocene) Fossils-prom the Santa Maria DistrictActceon, species.Amphissa (?) species.Angulus, species.Area, species a .Area,, species indeterminate.Area trilineata Conrad.Astyris richthofeni Gabb.Balanus cf. concavus Bronn.Bathytoma cf. tryoniana Gabb.Bittium, new species a .Bitthim, new species c .Cadulus fusiformis Sbarp and Pilsbry.Calliostoma, species indeterminate.Callista subdiaphana Carpenter.Cancellaria, species.Cardium mcckianum Gabb.Cardium, species indeterminate.Chione, species.Chlorostoma ( ?) species.Chrysodomus, species.Clidiophora punctata Carpenter.Crepidula princcps Conrad.Crucibulum spinosum Sowerby.Cryptomya ovalis Conrad.Cumingia californica Conrad.Dosinia pondcrosa Gray.Drillia johnsoni Arnold.Echinarachnius ashleyi Merriam.Bchinarachnius cf. c.vccntricus Escbscboltz, var.a .Fusus, species a .Fusus, species b .Galcrus inornatus Gabb.Glycyineris cf. barbar-ensis Conrad.Kennerlia (?) species.Leda taphria Dall.Lucapina cf. crcnnlata Sowerby.Lunatia lewisii Gould. ARNOLD] FOSSIL, MOLLUSKS FROM CALIFORNIA 423Macoma nasufa Conrad.Macoma, species.Macoma cf. sccta Conrad.Mactra, species.Mioplciona oregoncnsis Dall.Modiolus rectus Conrad.Monia macroschisma Deshayes.Muricidea, species.Mya truncata Linne.Mytihis, species indeterminate.Nassa califomiana Conrad.Natica clausa Broderip and Sowerby.Nevcrita reclusiana Petit.Ocinebra lurida Middendorf.Olivella biplicata Sowerby.Olivella cf. intorta Carpenter.Opalia anomala Stearns.Opalia varicostata Stearns.Ostrea veatchii Gabb.Ostrea possibly veatchii Gabb.Panomya cf. ampla Dall.Panopea generosa Gould.Pecten (Plagioctcnium) near cerrosensis Gabb.Pecten (Patinopecten) healeyi Arnold.Pecten (Pecten) hemphilli Dall.Pecten (Chlamys) lawsoni Arnold.Pecten (Patinopecten) oweni Arnold.Pecten (Pecten) stearnsii Dall.Pecten (Chlamys) wattsi Arnold.Phacoides annulatus Reeve.Phacoides intensus Dall.Pholadidca ovoidea Conrad.Pholadidca ( ?) species indeterminate.Platyodon canccllatus Conrad, var. a .Pleurotoma (Borsonia), species a .Plcurotoina, species.Priene oregoncnsis Redfield, var. angelensis Arnold (?)Priene orcgonensis Redfield (young).Purpura crispata Chemnitz.Saxidomns gracilis Gould.Saxidomus (?) species 3 .Scala, species a .Sigarctus debilis Gould.Siliqua cf. cdcntula Gabb.Solcn cf. sicarius Gould.Tapes cf. lacineata Carpenter.Tapes stalcyi Gabb.Tapes tencrrima Carpenter.Tellina, species.Tellina aff. bodegensis Hinds.Terebratalia occidentalis Dall. 424 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 5°Thalotia caffea Gabb.Thracia cf. trapezoides Conrad.Thyasira aff. gouldii Philippi.Tresus mittallii Conrad.Tritonium, species indeterminate.Trochita radians Lamarck.Trochita, species indeterminate.Turritella cooperi Carpenter./ ' enericardia californica Dall.The Fernando formation in the vicinity of Santa Barbara consistsof a series of conglomerate, sandstone, shale, and marl. The fossil-iferous layers are largely sandstone and sandy marl (some of thelatter made up almost entirely of bryozoan remains), and representthe Pliocene or possibly the lowest Pleistocene. The following newspecies and varieties are from the Fernando bryozoan marl at thebath-house beach, Santa Barbara : Mitramorpha Hlosa Carpenter, var. barbarensis, new variety.Puncturella delosi, new species.Venericardia yatesi, new species.Pscphidia barbarensis, new species.Associated with the above in the same locality are the followingpreviously described or questionable species : Partial List of Fernando (Pliocene or Lowest Pleistocene) Fossils fromBath-house Beach, Santa BarbaraAcmaa insessa Hinds.Admete gracilior Carpenter.Amphissa corrugata Reeve.Balanus concavus Bronn.Bela Hdicula Gould.Bit tinm barbarensis Bartsch.Bittium catalincnsis Bartsch.Bryozoa, species.Cardium corbis Martyn.Calliostoma gemmulatum Carpenter.Chrysodomus tabulatus Baird.Clathurella conradiana Gabb.Columbclla (Astyris) gausapata Gould.Columbella (Astyris) gausapata, var. carinata Hinds.Columbella (Astyris) tuberosa Carpenter.Crepidula adunca Sowerby.Crepidula navicelloides Nuttall.Crepidula princeps Conrad.Cythara branneri Arnold.Diastoma, species.Fustrs robirstics Trask. ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 425Gakrus mammilaris Broderip.Glottidia albida Hinds.Lacuna compacta Carpenter.Laqneus jeffrcysi (?) Dall.Leptothyra bacula Carpenter.Leptothyra paucicostata Dall.Macoma, species.Mangilia angulata Carpenter.Mangilia interfossa, var. pedroana Arnold.Mangilia tabulata Carpenter.Margarita papilla Gonld.Mercenaria perlaniinosa Conrad.Modiolus fornicatus Carpenter.Xassa mendica Gould.Nassa perpinguis Hinds.Natica clausa Broderlip and Sowerby.Ocinebra barbarensis Gabb.Ocinebra lurida Middendorf.Ocinebra lurida, var. aspcra Baird.Ocinebra pcrita Hinds.Odostomia nuciformis, var. avellana Carpenter.Odostomia gouldii Carpenter.Olivella biplicata Sowerby.Panopea gencrosa Gould.Pecten (Pectcn) bcllus Conrad.Pectcn (Patiuopecten) caurinus Gould.Pecten (Chlainys) hastatus Sowerby.Pecten (Chlamys) hastatus Sowerby, var. strategus Dall.Pecten (Chlamys) jordani Arnold.Pecten (Chlamys) opuntia Dall.Phacoides annulatus Reeve.Phacoides californica Conrad.Pododcsiuus macroschisma Deshayes.Protocardia ccntifilosa Larpenter.Puncturclla cuculata Gould.Sonde pulchra Sowerby, var. uiontereyi Arnold.Strongylocentrotus purpuratus Stimson.Terebratalia hcniphilli Dall.Tomatina culcitella Gould.Trophon (Boreotrophon) gracilis Perry.Trophon (Boreotrophon) orphcus, var. precursor Arnold.Trophon (Boreotrophon) stuarti Smith.Turbonilla tridentata Carpenter.Vencricardia nwnilicosta Gabb. 426 smithsonian miscellaneous collections [vol. 50New Eocene (Tejon Formation) Species and VarietiesTURRITELLA (MARTINEZENSIS Gabb, var. ?) LOMPOCENSIS,new varietyPI. LI, %s. 5a, $b, and 8.Description.—Shell averaging about 80 millimeters in altitude,turreted, slender; apex acute. Whorls 10 or more, angulated nearbase, upper portion flat or slightly convex, lower concave. Sutureappressed, not very distinct. Sculpture consists of a prominentraised revolving line on angle, another equally as important at theanterior margin and 3 others of varying degrees of importance abovethe angle ; between these 5 principal lines there are sometimes inter-calaries. the type showing a persistent one between the angle andthe next line above; fine sharp incremental lines, some more impor-tant than others, cross the whorls, bowing convexly backward, thissystem of sculpture associated with the spiral lines, often giving thesurface a cancellate appearance; the interspaces between the majorspiral lines are of approximately the same width except in the caseof the ones between the second and third lines above the angle, andbetween the third line above the angle and the suture, both of whichare about two-thirds the width of the major interspaces.Dimensions.—Altitude of type, from which four or five upperwhorls are gone, 68 mm. ; latitude, 20 mm.Notes.—This variety is much slenderer than the typical form, andhas the angle relatively nearer the base. Named for the town ofLompoc, near the type locality.Type.—Cat. No. 165,316, U. S. N. M.Locality.—Float boulder, sharp turn in road in San MiguelitoCanyon, 4^2 miles southwest of Lompoc, Santa Barbara County*Cal. ; locality No. 4509.Horizon.—Tejon formation, EocenePECTEN (CHLAMYS ?) YNEZIANA, new speciesPI. L, fig. 4, and PI. LI, figs. 6a and 6/'Description.—Shell averaging 60 to 70 millimeters in altitude;slightly higher than long, moderately convex, practically equivalveand equilateral, rather thin ; base regularly rounded ; dorsal marginsconcave ; margins somewhat serrate. Surface of disk onamented byfrom 30 to 45 irregular, inequidistant rounded, more or less imbri-cated ribs ; in some instances the ribs occur quite regularly, everyalternate one being prominent, with lesser ones (appearing as inter- ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 427 calaries) between ; in others the ribs are irregularly disposed, al-though there is a tendency for the alternate ones to be larger andsometimes dichotomous. Ears radially striate in addition to incre-mental imbricating sculpture ; anterior ear of right valve with deepbyssal notch and well isolated byssal area.Dimensions.—Latitude (restored) 75 mm.Notes.—The imperfect fragments which furnish the charactersdescribed above represent a species apparently allied to P. perrunArnold, although it is smaller and has more numerous and less imbri-cate ribs than the latter. P. ynesiana is the only species of this groupfound in the Eocene. It has been recognized in the Tejon formationthroughout the whole length of the Santa Ynez Range, and as fareast as the Ojai Valley, Ventura County.Type.—Cat. No. 165,313, U. S. N. M. Paratype, same number.Locality.—San Julian ranch, 10 miles southeast of Lompoc, SantaBarbara County, California ; locality No. 4507.Horizon.—Tejon formation, Eocene.New Lower Miocene (Vaoueros Formation) SpeciesPURPURA VAQUEROSENSIS, new speciesPI. LII, figs, ra and lbDescription.—Shell averaging about 100 millimeters in altitude,very broadly spindle-shaped, spire elevated, conical ; apex subacute.Whorls 4 or 5, sharply angulated anteriorly immediately adjacent tosuture, portion posterior to angle flat except for a slight concavityjust in front of suture caused by bending back of posterior marginwhere it appresses against antecedent whorl. Suture appressed,wavy, distinct, sometimes encroaching on angle of posterior whorl.Sculpture of the penultimate and preceding whorls confined to finebackward-sloping incremental lines and sometimes a faint suggestionof nodes on the angle ; body whorl biangulate, the posterior anglebeing the more prominent owing to a row of prominent nodes ( 10 intype), some of which are quite regular, some more or less spirallyelongate, and others approaching the importance of spines, anteriorangle consisting of a rounded spiral ridge and below this four othersimilar revolving ridges, separated by impressed lines ; area betweenthe two angles flat or slightly convex and carrying four obsoletespiral ridges ; whole surface of whorl crossed by sharp imbricatinglamellae, which slope backward on posterior portion of whorl and riseto the importance of imbricating spines on the second and fourthridges in front of anterior angle and occasionally on the other ridges. 428 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50Columella twisted and recurved, the lower portion overlapping anarrow canal ; columella strongly sculptured by incremental lines.Aperture ovate ; outer lip simple.Dimensions.—Altitude, ioo mm. ; latitude, 68 mm. ; altitude ofbody whorl, 92 mm. ; longitude of aperture, including canal, 80 mm.Notes.—In all of the specimens of this species examined theaperture and the greater part of the columella are unfortunatelyconcealed. It appears, however, from external characteristics to be-long to the genus Purpura, and to that group of the genus repre-sented by P. tricercalis Blainville and P. triangularis Blainville, al-though P. vaqucrosensis is very much larger than either of the latter.This magnificent species is known in the lower Miocene from Mon-terey County south to Santa Barbara County, and is, so far as thewriter is aware, confined to this one horizon of the Miocene. It isone of the prominent members of the very characteristic fauna ofwhich Pectcn magnolia Conrad, Turritella ineziana Conrad, andCardiuni, new species near quadrigenariwn, are a part. Named forthe Vaqueros formation (lower Miocene), of which it is believed tobe characteristic.Type.—Collection of Delos Arnold, Pasadena, California.Locality.—-Lynch Mountain, Monterey County, California.Horizon.—Vaqueros formation, lower Miocene.PECTEN (PECTEN) VANVLECKI, new speciesPI. Lill, figs. 1 and 2Description.—-Shell averaging about 70 millimeters in altitude,length and height about equal, outline circular ; both valves convex,the right slightly more so than the left, equilateral, thin ; base regu-larly rounded ; sides only very slightly concave above ; marginssmooth. Right valve somewhat convex, the region of greatest con-vexity being just below the beak; surface ornamented with 13 or 14rather prominent ribs, these being quite rounded in the youngerstages of growth, but gradually becoming flatter and lower towardthe periphery ; interspaces rounded near umbos, but shallower andflatter below ; equal, fine, sharp, raised incremental lines, separatedby interspaces as wide as the lines, cover the surface of the disk andears ; hinge line longer than half length of disk ; ears subequal,anterior with shallow byssal notch ; posterior rectangularly trun-cated. Left valve slightly less convex than right, flat to concaveimmediately below umbo; ribs regularly rounded throughout entirelength, becoming flatter and sometimes almost obsolete toward the ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 429periphery ; minute sculpture as in right valve ; ears flat, the anteriorone showing two or three faint radial riblets. Interior of both valvesreflecting the external ribbing very prominently.Dimensions.—Longitude, 70 mm. ; altitude, 64 mm. ; diameter(approximate), 12 mm.Notes.—This species appears to be most closely related to P. sanc-tcecruzensis Arnold, which occurs in the Oligocene and lowest Mio-cene of the Santa Cruz Mountains. It is distinguishable from thelatter by its larger size, flatter disks, less elevated ribs, and by theprominent reflection of the external ribbing on the interior of thedisk. This last is one of the most prominent, unique, and interestingcharacteristics of P. vanvlecki. Named in honor of Mr. Robert VanVleck Anderson, of the United States Geological Survey.Type.—Cat. No. 165,305, U. S. N. M. (right valve).Paratype.—Cat. No. 165,306, U. S. N. M. (left valve).Locality.—Mouth of Ballard Canyon, 2 miles south of SantaYnez, Santa Barbara County, California ; locality No. 4478.Horizon.—Vaqueros formation, lower Miocene.MODIOLUS YNEZIANUS, new species PI. LII, %. 2Description.—Shell averaging about 60 millimeters in altitude,elongate-ovate in outline, convex, equivalve; beaks nearly terminal,protruding forward and slightly beyond margin ; base not regularlyrounded, curving sharper anteriorly; anterior margin curving sharplyaround attenuate extremity just in front of beak, and then straightfor nearly entire length of shell, with the exception of a slight con-traction near middle caused by a sulcation extending obliquely back-ward from beaks ; posterior dorsal margin straight, bending arounda moderately angular extremity into the slightly arcuate ventral mar-gin ; the shell bulges in the middle in such a way as to suggest abroad, rounded ridge bowing over obliquely backward from the an-terior part of the base to the beak ; surface sculpture consists offine incremental lines.Dimensions.—Of type, a small specimen; altitude, 31 mm.; lati-tude, 18 mm.; diameter, 11 mm.Notes.—This species is allied to M. fomicatus Carpenter, fromwhich it differs by being much larger, more angular posteriorly,not as ventricose nor with the bulging part as overturned posteriorly.It is quite abundant at the type locality and at other places where theVaqueros formation is fossiliferous. Named for the Santa YnezMountains. 430 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vol,. 50Type.—Cat. No. 165,324, U. S. N. M.Locality.—San Julian ranch, 10 miles southeast of Lompoc, SantaBarbara County, California ; locality No. 4504.Horizon.—Vaqueros formation, lower Miocene.New Pliocene (Fernando Formation) Species and VarietiesLYMN^A ALAMOSENSIS, new speciesPL LIV, figs. 6 and 7Description.—Adult shell averaging about 6 or 7 millimeters inaltitude, broadly spindle-shaped, spire elevated, apex rounded.Whorls four, bulging, more convex posteriorly than anteriorly; out-line of body whorl regularly arcuate ; a faint ridge crowns the pos-terior margin of each whorl where it appresses against the ante-cedent whorl. Suture appressed, slightly sinuous, distinct ; sculptureconsisting of numerous microscopic incremental lines, which aresomewhat better developed on the posterior portion of the whorl,and occasional faint spiral striae ; a hard, glossy epidermis is pre-served on some of the specimens. Aperture sub-oval, narrowingposteriorly ; outer lip protruding anteriorly, thickened into over-hanging flange internally, and flaring from posterior extremity asfar around as umbilical region ; a minute umbilical chink is visible inmost specimens.Dimensions.—Altitude, 6 mm. ; latitude, 3 mm. ; altitude of bodywhorl, 4.9 mm. ; longitude of aperture, 3 mm. ; latitude of aperture,1.5 mm.Notes.—This unique little fossil occurs in a peculiar fine-grainedgray clay in the upper portion of the Fernando formation, where,at the type locality, near Los Alamos, it is quite abundant. Noother fresh-water species were found associated with it.Type.—Cat. No. 165,426, U. S. N. M.Locality.—Fresh-water beds one mile southeast of bench-mark425, Los Alamos Valley, Santa Barbara County, California; localityNo. 4483.Horizon.—Fernando formation, fresh-water portion at top,which probably corresponds with the Paso Robles formation of theSan Luis quadrangle described by Fairbanks in the San Luis folio.DRILLIA GRACIOSANA, new speciesPI. LIV, fig. 18Description.-—Shell averaging about 14 or 15 millimeters in alti-tude, spindle-shaped ; the sharper portion of the spindle being above ; ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 43Iapex subacute. Whorls 5, somewhat angulated medially, convexanteriorly, concave to flat posteriorly, sculpture consisting of notvery prominent rounded axial ribs (17 on penultimate whorl), obso-lete above angle, and 2 spiral ridges of about equal importance tothe axial ribs, also below the angle, these two systems giving a char-acteristic cancellated appearance to the surface ; the upper margin ofeach whorl is appressed against the anterior portion of the one pre-ceding and bent back into a little, more or less nodose revolving ridgenext to suture ; the area between this revolving ridge and the angleof the whorl is ornamented only by lines of growth which bowconvexly posteriorly ; the axial ridges become almost obsolete or arereplaced by irregular lines of growth on the body whorl, while thespiral ridges (of which there are 7) become quite prominent, andare separated by channeled interspaces equal in width to the ridges.Suture appressed, wavy, and not very distinct. Columella curved,short and broad, faintly biangularly plicated and with a faint indica-tion of an umbilical chink between it and the incrusted inner lip.Aperture subpyriform ; notch rather prominent, though quite shal-low ; canal short and curved.Dimensions.—Altitude, 14 mm.; latitude, 6 mm.; altitude ofbody whorl, 8.8 mm. ; longitude of aperture, 4.5 mm. ; latitude ofaperture, 2 mm.; canal, 1.7 mm.Notes.—This stubby little species is more closely related to D.canccllata Carpenter than to any other West Coast form, but iseasily distinguishable from the latter by its broader outline, heaviershell, broader columella, fewer and stronger ribs and ridges. Aspecies similar if not identical to D. graciosana is found in the SanDiego formation at Pacific Beach, San Diego County. Named forGraciosa Ridge, the type locality.Type.—Cat. No. 165,309, U. S. N. M.Locality.—Graciosa Ridge, near Folsom well No. 5, Orcutt,Santa Barbara County, California ; locality No. 4476.Horizon.—Fernando formation, Pliocene portion.DRILLIA WALDORFENSIS, new speciesPI. LIV, fig. 12Description.—Shell averaging about 18 to 20 millimeters in alti-tude, slender, spindle-shaped ; apex subacute when perfect. Whorls8 or 9, convex, prominently angulated slightly anterior to middle;portion of whorl posterior to angle has a decidedly concave aspect,which is heightened by a tendency of the posterior margin of thewhorl (which is appressed against the preceding whorl) to bend out- 43-2 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50 ward, sculpture consisting of obliquely forward sloping, broad,rounded axial ribs (10 on the penultimate whorl of the type), whichare elevated into nodes on the angle, but become obsolete toward thesutures, especially posteriorly, where the whorl is almost free fromaxial ornamentation ; spiral sculpture almost obsolete, although fainttraces of spiral lines are sometimes visible between the ribs and onthe anterior portion of the body whorl ; faint lines of growth, stillmore oblique than the ribs, are visible, especially on the body whorl.Suture distinct, appressed, occasionally slightly undulating. Colu-mella twisted at base and biangularly plicated. Aperture subpyri-form ; canal relatively long for this genus, slender, and stronglyrecurved ; notch of medium prominence ; inner lip straight, incrusted,with a decided callus at posterior end of aperture.Dimensions.—Altitude, 18.5 mm. ; latitude, 6 mm. ; altitude ofbody whorl, 10 mm. ; longitude of aperture, 4 mm. ; latitude of aper-ture, 2.1 mm; canal, 3.4.Notes.—This beautiful little Drillia appears to be more closelyrelated to D. empyrosia Dall than to any other West Coast form,although its nodose whorls suggest D. torosa Carpenter at first sight.It is distinguishable from D. empyrosia by its smaller size, slendererform, more recurved canal, and obsolete spiral sculpture (D. empy-rosia being quite prominently spirally sculptured, especially on thebody whorl). The recurved canal, oblique ribs, and slenderer formof D. waldorfensis separate it at once from D. torosa. D. waldorf-ensis reminds one of D. (Cymotosyrinx) cepynota, var. acila Dall,from the Shell Creek, Florida, Pliocene, but is slenderer and hasfewer and more rounded ribs. Named for the type locality, Wal-dorf asphalt mine.Type.—Cat. No. 165,270, U. S. N. M.Localty.—W'aldorf asphalt mine, 3 miles southeast of Guadalupe,Santa Barbara County, California ; locality No. 4473.Horizon.—Fernando formation, lower Pliocene portion.BATHYTOMA CARPENTERIANA Gabb, var. FERNANDOANA,new varietyPL LVI, fig. 7Description.—Shell averaging about 25 millimeters in altitude,broadly spindle-shaped ; apex in type is imperfect, but from otherspecimens is known to be subacute. Whorls 4 or 5, more or lessangulated, concave in front and convex behind, the anterior marginof each whorl appressed against the lower convex portion of the pre-ceding one ; body whorl similar to others except that it is protracted ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 433 anteriorly, sculpture consisting of moderately sharp raised spirallines, the penultimate whorl in the type carrying 9, 5 anterior to theangle and 4 posterior, the latter being slightly less prominent thanthose in front ; the raised lines become more prominent on the ante-rior portion of the body, where they are wider spaced and the alter-nate ones are relatively more important ; faint lines of growth,convex posteriorly on the angle and concave posteriorly on theposterior portion of the whorl, record a very wide, shallow notch ashaving been present in the lip. Suture slightly undulating, oftenprominent, owing to appressed portion of whorl being elevatedslightly into a faint ridge just anterior to suture. Aperture narrowpyriform ; canal very short and broad and only very slightly curved.Inner lip straight and smooth except for a single faint spiral ridge.Dimensions.—Altitude, 24 mm.; latitude, 12.3 mm.; altitude ofbody whorl, 20 mm. ; longitude of aperture and canal combined, 16mm. ; latitude of aperture, 5 mm.Notes.—This variety is closely allied to the typical B. carpent er-iana, but in the series of specimens examined is constantly smaller,relatively much shorter, and has the whorls more angulated than inthe typical form. Named for the Fernando formation, of which itappears to be characteristic.Type.—Cat. No. 165,303, U. S. N. M.Locality.—Graciosa Ridge, near Folsom well No. 5, Orcutt,Santa Barbara County, California ; locality No. 4476.Horizon.—Fernando formation, Pliocene portion.CANCELLARIA CRAWFORDIANA Dall, var. FUGLERI, new varietyPI. LIV, fig. 9Description.—Shell averaging between 20 and 25 millimeters inaltitude, quite narrowly oval in outline. Spire elevated, and usuallyconsisting of 5 or 6 whorls in addition to the body whorl. Whorlsevenly convex and prominently angulated above, the portion of thewhorl posterior to the angle forming a narrow revolving table. Thesurface of the whorls is cancellate, the sculpture consisting of narrow,rounded, raised revolving ridges (9 on the penultimate whorl, 18 onthe body whorl in the type) and longitudinal ribs of the same char-acter (23 on the penultimate whorl of the type) and prominence asthe revolving ridges. Suture deeply appressed and distinct. Aper-ture ovate, canaliculated in front (the canal is broken off in the type).Columella with two prominent oblique plications.Dimensions.—Altitude of imperfect specimen (type), 22 mm.; 434 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50latitude, 11.5 mm.; longitude of aperture without canal, 10 mm.;latitude of aperture, 5 mm.Notes.—This variety differs from the recent typical form in thatthe former has an average of many more (23 instead of 15) longi-tudinal ribs, more (9 instead of 7) spiral ridges, and a relativelynarrower revolving table above the angle.Type.—Cat. No. 165,322, U. S. N. M.Locality.—Fugler Point asphalt mine, 1 mile north of Gary rSanta Barbara County, California (U. S. G. S. locality No. 4475).Horizon.—Fernando formation (lower Pliocene).NASSA WALDORFENSIS, new speciesPL LIV, fig. 17Description.—Shell averaging about 13 to 15 millimeters in alti-tude, sharply conical in outline, apex subacute. Whorls 6, convex,angulated near posterior margin. Suture appressed, distinct, wavy,sculpture consisting of sharp axial ribs (13 on penultimate whorl),extending with almost equal prominence from suture to suture,and prominent squarish revolving ridges (5 on penultimate whorl)separated by channeled interspaces, the whole presenting a mostcharacteristic cancellate appearance ; fine lines of growth are visibleunder a lens. Columella' short, twisted and slightly curved ; sepa-rated from body whorl by a distinct canal ; sculptured much lessprominently than whorls and by spiral lines only. Aperture broadlyelliptical ; canal short and sharply recurved ; inner lip incrusted ; outer lip slightly dentate.Dimensions.—Altitude, 13 mm.; latitude, 6.5 mm.; altitude ofbody whorl, 8 mm. ; longitude of aperture, 4.8 mm. ; latitude ofaperture, 2.8 mm.; canal, 1.2 mm.Notes.—This species is slenderer and has coarser axial sculpturethan N. perpinguis Hinds, and is somewhat smaller, relativelybroader, and has much sharper ribs than N. mcndica Gould ; it ismore closely related to the latter than to any other of the West Coastspecies. Found abundantly in the Pliocene throughout southernCalifornia. Named for the type locality, Wraldorf asphalt mine.Type.—Cat. No. 165,272, U. S. N. M.Locality.—Waldorf asphalt mine, 3 miles southeast of Guadalupe,Santa Barbara County, California ; locality No. 4473.Horizon.—Fernando formation, lower Pliocene portion. ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 435OCINEBRA MICHELI Ford, var. WALDORFENSIS, new varietyPI. LIV, fig. IODescription.—Shell averaging about n or 12 millimeters inaltitude, rather slender, spindle-shaped; apex acute. Whorls 5,prominently angulated in the middle ; anterior portion convex, pos-terior flat or concave, with a slight curving back of the posteriormargin where it appresses against the preceding whorl. Sculptureconsists of axial varices and spiral lines ; axial varices (8 on penul-timate whorl) are broad and rounded anterior to angle, narrower andsharper behind ; the spiral lines are prominent only below the angleof each whorl ; they are equal, rounded, ornamented by imbricatingplates of growth, and are separated by distinct impressed interspaces ;anterior portion of whorl sculptured by fine lines of growth. Sutureappressed and not very distinct. Columella rather long, narrow,and recurved ; spirally ribbed like body whorl. Aperture broadlypyriform; canal long, narrow, and recurved.Dimensions.—Altitude, 11 mm.; latitude, 5 mm. : altitude of bodywhorl, 8.4 mm. ; longiture of aperture, 3.4 mm. ; latitude of aperture,1.3 mm. ; canal. 3 mm.Notes.—This slender little Oclncbra differs from the typical O.michcli in the following respects: It is slenderer, has less angularwhorls, and the imbricate sculpture on the posterior portion of thewhorl is less prominently developed ; the axial ribs are more promi-nent posterior to the angle, the spiral lines are equal, not alternate,the aperture is narrower, and the canal more recurved. Named forthe type locality, Waldorf asphalt mine.Type.—Cat. No. 165,261.Locality.—Waldorf asphalt mine, 3 miles southeast of Guadalupe,Santa Barbara, California ; locality No. 4473.Horizon.—Fernando formation, lower Pliocene portion.LEDA ORCUTTI, new speciesPL LV, fig. 9Description.-— Shell averaging about 7 millimeters in longitude,solid, equivalve ; beaks slightly anterior ; anterior end rounded,shorter ; posterior end rostrate, subacute ; base arcuate ; lunule longand very narrow, separated from shell by deeply impressed line ; escutcheon much broader than lunule, its surface prominently con-cave and its carina well developed, especially toward the posteriorend, sculpture consisting of several (7 in type) prominent wide 436 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vol. 50 spaced, narrow concentric riblets, this sculpture confined to the mainportion of shell ; lunule, escutcheon, and carinas ornamented only byfine concentric incremental lines; incremental lines also visible be-tween the concentric riblets. Hinge and interior similar in a generalway to L. minuta Fabr.Dimensions.—Longitude, 7 mm. ; altitude, 4.2 mm. ; diameter,3 mm.Notes.—This beautiful little Leda is allied to L. minuta Fabr., butdiffers from it in being less attenuate posteriorly, having coarser andwider spaced concentric riblets, and in having simple rather thanbiangular carinas. A rather abundant species in the finer fossiliferoussands and shales of the lower Pliocene. Named in honor of Mr.W. W. Orcutt, of Los Angeles, California.Type.—Cat. No. 165,271, U. S. N. M.Locality.—Waldorf asphalt mine, 3 miles southeast of Guada-lupe, Santa Barbara County, California; locality No. 4473.Horizon.—Fernando formation, lower Pliocene portion.PHACOIDES NUTTALLII Conrad, var. ANTECEDENS, new varietyPI. LV, fig. 6Description.—Shell averaging about 25 millimeters in longitude,very broadly elliptical in outline, longer than high, ventricose, andequivalve ; beaks only moderately prominent, placed slightly anteriorto middle of shell ; base arcuate ; anterior margin sloping morerapidly from beaks than posterior, the latter being nearly straightfor about 6 or 8 millimeters from the beaks ; both extremities quiteregularly rounded, the posterior being possibly slightly more atten-uate, sculpture consisting of numerous close-set subequal roundedradiating ridges and concentric ribs which are narrower than theradials, and spaced about twice the distance between two of thelatter; the concentric ribs tend to become obsolete toward theperiphery in adult specimens ; the general appearance of the surfaceis decidedly cancellate. Lunule deep, small, and inconspicuous.Interior and hinge as in P. nuttallii.Dimensions.—Longitude, 23 mm. ; altitude, 19 mm. ; diameter,12 mm.Notes.—This variety is more ventricose, less angulated pos-teriorly, and has its concentric ribs much wider spaced than thetypical P. nuttallii.Type.—Cat. No. 165,290, U. S. N. M. rflTHSONIAN MISCELLANEOUS COLLECTIONS VOL. 50, PL. LIV FERNANDO < PLIOCENE! GASTEROPODA -MITHSONIAN MISCELLANEOUS COLLECTIONS VOL. r.O. PL. LV 7 10FERNANDO (PLIOCENE) FOSSILS Smithsonian miscellaneous collections Vol. 50, pl. lvi FERNANDO (PLIOCENE) FOSSILS SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 50, PL. LVII 12 14FERNANDO (PLIOCENE! GASTEROPODA SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 50, PL. LVII FERNANDO (.PLIOCENE) PELECYPODA AND BRACHIOPODA ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 437Locality.—Alcatraz asphalt mine, near Sisquoc, Santa BarbaraCounty, California; locality No. 4471.Horizon.—Fernando formation, lower Pliocene portion.SPISULA CATILLIFORMIS Conrad, var. ALCATRAZENSIS, newvarietyPI. LVI, fig. 6Description.—Shell averaging about 130 millimeters in longi-tude, oval in outline, slightly narrower in front than behind, equi-valve, inequilateral, ventricose, extremities slightly gaping; baseregularly arcuate ; posterior portion of dorsal margin nearly straightat umbo, gradually becoming more and more arcuate as it passesaround the broadly rounded extremity ; anterior dorsal margin onlyslightly depressed in front of umbo, but carrying a slight bump onlya short distance from the latter; anterior extremity more truncateand narrower than posterior; beaks slightly anterior, bent forward,but not exceptionally prominent. Surface consists of numerousmore or less irregular lines of growth. Hinge and interior quitesimilar to typical form.Dimensions.—Longitude, 128 mm.; altitude, 98 mm.; diameter,57 mm.Notes.—This variety is more ventricose, more excavated andattenuate in front, more regularly rounded below, and has the beaksmore central than the typical S. catilliformis. Named for type local-ity, Alcatraz asphalt mine.Type.—Cat. No. 165,291, U. S. N. M.Locality.—Alcatraz asphalt mine, near Sisquoc, Santa BarbaraCounty, California; locality No. 4471.Horizon.—Fernando formation, lower Pliocene portion.SPISULA SISQUOCENSIS, new speciesPI. LVI, fig. 1Description.—Shell averaging about 120 millimeters in longi-tude, subtrigonal in outline, equivalve, inequilateral, ventricose ; baseregularly arcuate; beaks anterior, prominent, bent forward, pro-truding beyond periphery or shell ; anterior end shorter and nar-rower than posterior, which is evenly rounded; area in front ofbeaks depressed concavely as a whole, but slightly elevated at mar-gin, this condition, when the two valves are together, suggesting alarge lunule with a slightly raised ridge running down the middle;posterior margin becomes more and more arcuate as extremity is 438 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50approached, sculpture consisting of numerous fine incremental lines,some of which are more prominent than the great majority, thesemore prominent ones giving a slightly irregular surface to the shell.Hinge and interior unknown, but probably quite similar to S. hemp-hilli.Dimensions.—Longitude, 120 mm.; altitude, 85 mm.; diameter,59 mm.Notes.—This species is near S. hemphilli Dall, but is constantlyand decidedly narrower. Named for Sisquoc, near the type locality.Type.—Cat. No. 165,292, U. S. N. M.Locality.—Alcatraz asphalt mine, near Sisquoc, Santa BarbaraCounty, California; locality No. 4471.Horizon.—Fernando formation, lower Pliocene portion.MITRAMORPHA FILOSA Carpenter, var. BARBARENSIS, newvarietyPI. LVII, fig. IDescription.—Shell averaging between 6 and 7 millimeters inlength, mitraform ; apex quite acute. Whorls six, slightly ventricose,angulated above at suture ; two nuclear whorls, smooth and some-what irregular, the second being eccentric with relation to the axisof the spire ; other whorls ornamented by four rounded, raised,revolving ridges and (16 on the penultimate whorl of the type)rounded longitudinal ribs. The longitudinal sculpture is relativelyof greater prominence on the upper whorls and fades away below themiddle of the body whorl. In the type the body whorl is sculpturedby 16 revolving lines, those toward the base being faint. Sutureappressed, distinct. Aperture narrow, and elliptical ; canal short.Outer lip smooth, inner lip slightly reflexed toward base, columellashowing faint indications of two plications, lower part of columellashowing trace of axial sculpture.Dimensions.—Altitude, 6.5 mm.; latitude, 2.6 mm.; altitude ofaperture and canal, together, 3 mm. ; latitude of aperture, 1 mm.No.TES.—In this variety the whorls are more convex, the longi-tudinal sculpture much more pronounced, the suture more distinct,and the canal relatively narrower than in the type. It lies betweenM. Hlosa and M. intermedia Arnold, having more numerous and lessprominent longitudinal ribs than the latter. Recent specimens ofa variety of M. filosa very closely resembling var. barbarensis are inthe National Museum labeled from Monterey. It is the opinion ofthe writer that the prominently longitudinally sculptured forms arenorthern types inhabiting somewhat colder water than the typicalfilosa. ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 439Type.—Cat. No. 165,245, U. S. N. M.Locality.—Bath-house Beach, Santa Barbara, California. (Delosand Ralph Arnold.)Horizon.—Fernando formation (Pliocene or lower Pleistocene).PUNCTURELLA DELOSI, new speciesPL LVII, fig. 5a and 56Description.—Shell minute for one of this genus ; body of shellroughly cylindrical, the cross-section of base being broadly elliptical,tapering off above into a coiled apex, the coil being right-handed andof about iy2 turns; a narrow slit about 0.7 mm. long perforates theshell in front of the apex and truncates one of the radiating ribs.The axis of the slit is parallel with the longer axis of the ellipticalbase. The sculpture consists of (in the type 23) prominent equal,equidistant, rounded, raised ridges, which radiate from the apextoward the periphery or base ; near the apex these ridges are quitesharp. The interspaces are slightly narrower than the ribs and arecrossed by numerous sharp raised lamellae of growth which flexforward and give the surface a cancellated appearance. Theselamellae also cross the radiating ribs, giving them an imbricated ornodose surface. The lamellae are more numerous on the anterior orcylindrical part of the shell. The interior of the shell is smooth. Araised border or septum associated internally with the slit dividesthe shell near the apex, crossing parallel with the narrow axis of thebase.Dimensions.—Altitude, 1.8 mm.; longer diameter of base, 1.8mm.; shorter diameter, 1.6 mm.Notfs.—This species of Puncturella is very much smaller thanany other from the West Coast. Its shape is also quite distinctiveand its ribs equal in size rather than alternating or subequal, as inthe previously described forms. Two specimens only were found atthe type locality. Named in honor of Delos Arnold, of Pasadena,California.Type.—Cat. No. 165,234, U. S. N. M.Locality.—Bath-house Beach, Santa Barbara, California. (DelosArnold.)Horizon.—Fernando formation (Pliocene or lower Pleistocene).VENERICARDIA YATESI, new speciesPL LVIII, figs. 2a and 2bDescription.—Shell averaging between 4 and 5 millimeters inaltitude, subcircular in outline, moderately convex. Beaks slightly 440 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50-posterior, turned slightly forward, and somewhat prominent. Ante-rior margin slightly depressed in front of beaks, but convex belowthis ; anterior angle somewhat more sharply rounded than posterior,giving the valve an obliquely protruding appearance anteriorly.Posterior margin and base regularly rounded. The sculpture con-sists of 8 or 9 broad falcate ribs separated by narrow incised inter-spaces and several (8 in the type) very prominent concentricimbrications of growth ; in addition to the latter are numerous fineincremental lines. Hinge relatively narrow for one of this genus.Dimensions.—Altitude, 4 mm. ; latitude, 4 mm. ; diameter of sin-gle valve, 1 mm.Notes.-—This species is more closely related to V. incisa Dall thanto any of the other West Coast forms, but is easily distinguishablefrom the latter by the fewer number (8 in type of yatesi, 19 in type of iwma) and greater breadth of its ribs, relatively smaller size andshorter and more angulated outline anteriorly. Named in honor ofDr. Lorenzo G. Yates, Santa Barbara, California.Type.—Cat. No. 165,248, U. S. N. M.Locality.—Bath-house Beach, Santa Barbara, California. (Delosand Ralph Arnold.)Horizon.—Fernando formation (Pliocene or lower Pleistocene).PSEPHIDIA BARBARENSIS, new speciesPL LVIII, fig. 3Description.—Shell averaging about 4 millimeters in altitude;subtrigonal in outline, ventricose. Beaks slightly anterior of thecenter, bowed slightly forward, but not prominent. Anterior mar-gin nearly straight ; anterior angle broadly rounded ; base not prom-inently rounded ; posterior angle much sharper than anterior ;.posterior margin regularly bowed and much more rounded thananterior. Surface smooth except for very fine lines of growth.Muscle scars prominent ; pallial sinus oblique and extending nearlyto middle of valve. The hinge consists of three prominent teeth—the middle one heavy, triangular, and slightly sulcated, the anteriorand posterior ones short.Dimensions.—Altitude, 4 mm.; longitude, 4.1 mm.; diameter ofsingle valve, 1 mm.Notes.—This species is higher and more trigonal in outline, hasa straighter anterior margin, and a less conspicuous anterior tooththan P. lordii Baird, which it resembles. Named for the type local-ity, Santa Barbara.Type.—Cat. No. 165,238, U. S. N. M. ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 44 1 Locality.—Bath-house Beach, Santa Barbara, California. (Delosand Ralph Arnold.)Horizon.—Fernando formation (Pliocene or lower Pleistocene).EXPLANATION OF PLATESAll figures are natural size unless otherwise indicated. Unlessotherwise indicated, all specimens figured are from Santa BarbaraCounty, California. Plate LTejon {Eocene) FossilsFig. 1. Cardium brewerii Gabb. Type. View of exterior of right valve;altitude, 61 mm. Pal. Cal. I, pi. xxiy, fig. 155. A common speciesin the Eocene of the Santa Ynez Mountains.2a. Crassatellites collina Conrad. Cat. No. 165,312, U. S. N. M. Viewof exterior of left valve; longitude, 87 mm. San Julian ranch;locality No. 4507. A characteristic species of the Tejon in theSanta Ynez Range.2b. View of anterior end of same specimen.3. Crassatellites collina Conrad. Cat. No. 165,312, U. S. N. M. Viewof hinge. Same locality as fig. 2a.4. Pecten (Chlamys ?) yneziana, new species. Cat. No. 165,313, U. S.N. M. Paratype. View of exterior ; altitude, 52 mm. San Julianranch; locality No. 4507. A characteristic species of the Tejon inthe Santa Ynez Range.5a. Ficus mamillatus Gabb. Cat. No. 165,319, U. S. N. M. View ofback; altitude, 31 mm.; 3 miles north of Sudden; locality No. 4518.Quite rare, but nevertheless found at most Tejon localities in thesouthern Coast Ranges.5b. View of same specimen from above.6. Turritella uvasana Conrad. Cat. No. 165,327, U. S. N. M. Apertureview of imperfect specimen ; altitude, 25 mm. ; 3 miles north ofSudden; locality No. 4518. Characteristic of the Tejon on theWest Coast. Plate LIKnoxville (Cretaceous) and Tejon (Eocene) FossilsFig. 1. Aucella piochii Gabb. Cat. No. 30,831, U. S. N. M. View of ex-terior of right valve; altitude, 25 mm. Knoxville (Lower Cre-taceous) formation, East Fork Tepusquet Creek; locality No. 4173.Characteristic of the Knoxville throughout the Coast Ranges.2. Aucella piochii Gabb. Cat. No. 30,831, U. S. N. M. View of exteriorof left valve, X 2. Same locality and horizon as fig. 1.2,a. Aucella piochii Gabb. View of exterior of left valve; altitude, 27mm. Bull. U. S. Geol. Survey, No. 133, 1895, pi. iv, fig. 6.2,b. Exterior of right valve of same specimen. Op. cit., pi. iv, fig. 7. 442 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 50 4. Venericardia planicosta Lamarck. Cat. No. 164,973, U. S. N. M.Exterior view of left valve ; longitude, 84 mm. Eocene, LittleFalls, Washington. This is the most widespread and characteristicEocene species in the world.5a. Turritella (martinezensis Gabb, var. ?) lompocensis, new variety.Cat. No. 165,316, U. S. N. M. Paratype. Back view of basal frag-ment; altitude, 30 mm. Southwest of Lompoc, in San MigueliteCanyon ; locality No. 4509.5&. Basal view of same specimen.6a. Pecten (Chlamys ?) yneziana, new species. Cat. No. 165,313. Type.View of exterior of imperfect disk; altitude, 64 mm. San Julianranch, 10 miles southeast of Lompoc; locality No. 4507.6b. View of hinge of right valve of same species ; length, 25 mm.7. Turritella uvasana Conrad. Cat. No. 165,326, U. S. N. M. Apertureview of imperfect specimen ; altitude, 68 mm. San Julian ranch,southeast of Lompoc ; locality No. 4507. Characteristic of theTejon of the Pacific Coast.8. Turritella (martinczensis Gabb, var. ?) lompocensis, new variety.Cat. No. 165,316, U. S. N. M. Type. View of back; altitude, 68mm. Same locality as fig. 5a.Plate LI I Vaqueros (Lozver Miocene) FossilsFig. 10. Purpura vaqucroscnsis, new species. Collection of Delos Arnold.Type. Aperture view ; altitude, 100 mm. Lynch Mountain, Monte-rey County.lb. Back view of same specimen.2. Modiolus ynezianus, new species. Cat. No. 165,324, U. S. N. M.Type. View of exterior of right valve, X 2. San Julian ranch,southeast of Lompoc ; locality No. 4504.Plate LIUVaqueros {Lower Miocene) FossilsFig. 1. Pecten (Pecten) vanvlecki, new species. Cat. No. 165,305, U. S. N.M. Type. View of exterior of right valve; altitude, 64 mm.Mouth of Ballard Canyon, 2 miles south of Santa Ynez ; localityNo. 4478.2. Pecten (Pecten) vanvlecki, new species. Cat. No. 165,306, U. S.N. M. Paratype. View of exterior of left valve ; altitude, 72 mm.Same locality as fig. 1.3. Pecten (Chlamys) sespeensis, var. hydei Arnold. Cat. No. 165,308,U. S. N. M. View of exterior of left valve; altitude, 60 mm.Mouth of Ballard Canyon, south of Santa Ynez ; locality No. 4478.This species is apparently characteristic of the Vaqueros.4a. Tcrcbratalia kennedyi Dall. Cat. No. 165,325, U. S. N. M. View ofexterior of ventral valve; altitude, 26 mm. Lime quarry 5 milessouthwest of Lompoc; locality No. 4521. The specimens from thisquarry are indistinguishable from the type of T. kennedyi, whichcame from Cerros Island, Lower California. ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 443 4b. View of exterior of imperfect dorsal valve of same species; altitude,18 mm.4c. View of exterior of dorsal valve of same species ; altitude, 19 mm.4OL. 50, PL. L TEJON (EOCENEJ FOSSILS SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 50. PL. LI KNOXVILLE (CRETACEOUS) AND TEJON (EOCENE) FOSSILS SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 50, PL. Lll VAQUEROS (LOWER MIOCENE) FOSSILS SMITHSONIAN MISCELLANEOUS COLLECTIONSm VOL. 50, PL. Llll vaqueros Slower miocene) fossils