SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 57, NUMBER 4 CAMBRIAN GEOLOGY AND PALEONTOLOGY No. 4.-CAMBRIAN FAUNAS OF CHINA With Four Plates BY CHARLES D. WALCOTT \ (Publication 2012) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION JUNE 17, 1911 h BALTIMORE, MD., U. B. A. CAMBRIAN GEOLOGY AND PALEONTOLOGY II No. 4.—CAMBRIAN FAUNAS OF CHINA By CHARLES D. WALCOTT (With Four Plates) CONTENTS PAGE Introduction 69 Alphabetical list of previously described species showing new generic reference 70 List of species described or figured in this paper 72 Description of species •]}, ILLUSTRATIONS Plates 14-17, see Descriptions 102-108 Figs. 7 and 7a. Levisia nasuta 87 INTRODUCTION This is the third preliminary paper on the Cambrian faunas of China.' It includes the description of a few new species from the collection made by Mr. Eliot Blackwelder of the Carnegie Institution of Washington Expedition to China in 1903-04 ; a larger number of species are from collections made in Manchuria by Dr. Joseph P. Iddings, who very kindly ofifered to make a collection for the Smithsonian Institution in the Province of Liau-tung, where Baron Richthofen collected the Cambrian trilobites described by Dr. Wil- li elm Dames " and the Cambrian brachiopods described by Dr. Emanuel Kayser.^ Other species are included, see list on pages y2-y^. In the revision of the new material from Liau-tung, Shan-tung, and Shan-si, it became necessarv to studv the references of the ' Proc. L^. S. National Museum, Vol. 29, 1905, pp. 1-106. Idem, Vol. 30, 1906, pp. s'Ss-SPS- * China, by Richthofen, vol. 4, pp. 3-.33. ' Idem, pp. 33-36. Smithsonian Miscellaneous Collections, Vol. 57, No. 4 6g 70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5/ species and genera. This resulted in the founding of several new genera and the changing of the generic reference of a number of the species described in the first two preliminary papers. The changes made are shown in the accompanying list, the first column giving the preliminary generic references and the second column the genera to which the species are now referred : LIST OF NAMES CHANGED Former generic reference. Agnostus koerferi Monke, 1903 Agraidos abaris Walcott, 1905 Agraulos acalle Walcott, 1905 Agraidos agenor Walcott, 1905 Agrauios arniatiis Walcott, 1906 Agraulos (?) capax Walcott, 1906 Agraidos divi Walcott, 1905 Agraulos (?) melie Walcott, 1906 Agraulos regularis Walcott, 1906 Amphoton Lorenz, 1906 Amphoton steiiunanni Lorenz, 1906 Anomocare bcrgioni Walcott, 1905 Anomocare bianos Walcott, 1905 Anomocare bigsbyi Walcott, 190O Anomocare biston Walcott, 1905 Anomocare ? butes Walcott, 1905 Anomocare commune Lorenz, 1906 Anomocare daunus Walcott, 1905 Anomocare decelus Walcott, 1905 Anomocare eriopia Walcott, 1906 Anomocare limbafum Angelin Anomocare speciosum Lorenz, 1906 Anomocare tatian Walcott, 1905 Anomocare temenus Lorenz, 1906 Anomocare temenus Walcott, 1905 Anomocarella ? bura Walcott, 1905 Anomocarella carine Walcott, 1905 Anomocarella contigua Walcott, 1906 Arionellus agonius Walcott, 1905 Arionellus ajax Walcott, 1905 Arionellus alala Walcott, 1905 Bathyuriscus asiaticus Lorenz, 1906 Bradoria bergeroni Walcott, 1905 Bradoria enyo Walcott, 1905 Bradoria eris Walcott, 1905 Bradoria fragilis Walcott, 1905 Bradoria sterope Walcott, 1905 Bradoria woodi Walcott, 1905 Present generic reference. = Agnostus douvillei Bergeron := Inouyia abaris (Walcott) = Inouyia ? acalle (Walcott) =rzLevisia agenor (Walcott) =1 Inouyia ? armatus (Walcott) = Inouyia capax (Walcott) = Inouyia divi (Walcott) = Inouyia melie (Walcott) =1 Inouyia ? regularis (Walcott,) = Dolichometopus Angelin ^-- Dolichomctopus dcois Walcott := Anomocarella bergioni (Walcott) = Coosia ? bianos (Walcott) = Anomocarella bigsbyi (Walcott) =r. Anomocarella biston (Walcott) ^Anomocarella butes (Walcott) = Anomocarella chinensis (Walcott) =^Coosia ? daunus (Walcott) = Coosia decelus (Walcott) = Ptychoparia (Einmrichella) eriopia (Walcott) ^Coosia (?) limbatum (Angelin) ^Anomocarella speciosum (Lorenz) ^= Anomocarella tatian (Walcott) ^z Anomocarella temenus (Walcott) ^= Anomocarella temenus (Walcott) =iLisania bura (Walcott) ^Coosia carme (Walcott) ^= Anomocarella albion Walcott = Lisania agonius (Walcott) ^Lisania ajax (Walcott) = Lisania alala (Walcott) =zDolichometopus deois Walcott =iAluta bergeroni (Walcott) •r=iAluta enyo (Walcott) = Aluta eris (Walcott) ^Aluta fragilis (Walcott) -s=:Aluta sterope (Walcott) — Aluta woodi (Walcott) NO. 4 CAMBRIAN FAUNAS OF CHINA 7I Calyiiiene 1' sinensis Bergeron, 1899 = Blackzcclderia sine)isis (Bergeron) Conocephalites subquadratiis Dames, := Anomocare subquadratus (Dames) 1S83 Conocephalites typus Dames, 1883 = Ptyelioparia typus (Dames) Craniclla ? ? sp. Walcott, 1905 =1 Discinopsis sulcatus Walcott Daviesella Walcott, 1905 ^Stephanocare Monke Damesella chione Walcott, 1905 = Stephanoeare richthofeni Monke Damesella sinensis Walcott, 1905 ^.Stephanoeare ? sinensis (Bergeron) Dicellocephalus ? sinensis Bergeron, -^Stephanoeare ? sinensis (Bergeron) 1899 Dikelocephalus ? baubo Walcott, igos := Ptychaspis baubo (Walcott) Dikelocephalus ? brizo Walcott, 1905 ^=Ptychaspis briso (Walcott) DovypygeUa Walcott, 1905 = Teinistion Monke Dorypygella alastor Walcott, 1905 z=zBlack-welderia alastor (Walcott) Dorypygella alcon Walcott, 1905 ^= Teinistion alcon (Walcott) Dorypygella typicalis Walcott, 1905 ^= Teinistion typicalis (Walcott) Hoeferia Redlich, 1901 =1 Redlichia Cossman, 1902 Liostracus megalurus Dames, 1883 7= Anomocare megalurns (Dames) Menocephalus adrastia Walcott, 1905 ^= Levisia adrastia (Walcott) Menocephalus beleniis Walcott, 1905 := Lisania belenus (Walcott) Menocephalus sp. Walcott, 1905 z= Anomocare sp. (Walcott) Obelus (Lingulepis) eros Walcott, = Lingulella (Lingulepis) cros 1905 (Walcott) Obolus (Lingulepis ?) sp. undt., =: Lingulella (Lingulepis F) sp. Walcott. 1906 undt. (Walcott) Olenoides ? cili.v Walcott, 1905 ^^ Blackwelderia cilix (Walcott) Olcnoides leblanci Bergeron, 1899 ^. Blackivelderia sinensis (Bergeron) Orthis linnarssoni Kayser, 1883 = Eoorfhis linnarssoni (Kayser) Ovthis (Plectorthis) agreste Walcott, :z= Eoorfhis agreste (Walcott) 1906 Orthis (Plectorthis) doris Walcott, ^= Eoorfhis doris (Walcott) 1905 Orthis (Plectorthis) kichouensis ^= Eoorfhis kichouensis (Walcott) Walcott, 1906 Orthis (Plectorthis) linnarssoni ^Eoorfhis linnarssoni (Kayser) Walcott, 1905 Orthis (Plectorthis) sp. undt, =- Eoorfhis sp. undt. (Walcott) Walcott, 1906 Plectorthis kayseri Walcott, 1905 =: Eoorfhis kayseri (Walcott) Plectorthis pagoda Walcott, 1905 ^Eoorfhis pagoda (Walcott) Ptychoparia ? batia Walcott, 1905 ^Chuangia batia (Walcott) Ptychoparia ? bronius Walcott, 1905 = Ptychoparia (Emmrichella) bromus (Walcott) Ptychoparia ecus Walcott, 1905 = Liostracina krausei Monke Ptychoparia granulosa Walcott, 1905 = Ptychoparia granosa Walcott Ptychoparia comus Walcott, 1906 ^= Anomocarella comus (Walcott) Ptychoparia consfricta Walcott, 1905 = Ptychoparia (Emmrichella) con- stricta (Walcott) Ptychoparia dryope Walcott, 1905 =:Conocephalina ? dryopc (Walcott) Ptychoparia inflata Walcott, 1906 r=Inouyia ? tnflata (Walcott) ^2 SMITHSONIAN MISCELLAN liOUS COLLECTIONS VOL. D/ Ptychoparia (f) maia Walcott, 1906 ^^Conoccphalina maia (Walcott) Ptychoparia mantoeiisis Walcott, igos= Ptychoparia (Emmrichella) mantoensis (Walcott) Ptychoparia nereis Walcott, 1906 Ptychoparia tellus Walcott, 1905 Ptychoparia tenes Walcott, 1905 Ptychoparia theano Walcott, 1905 =^ Anomocare ? nereis (Walcott) ^Lonchocephahis tellus (Walcott) =z Anomocarella icnes (Walcott) =: Ptychoparia (Emmrichella) theano (Walcott) = Inouyia titiana (Walcott) = Anomocarella undata (Walcott) ^ Conocephalina vesta (Walcott) Conocephalina sp. undt. (Walcott) Solenopleura intermedia (Walcott) Ptychoparia titiana Walcott, 1905 Ptychoparia undata Walcott, 1906 Ptychoparia vesta Walcott, 1906 Ptychoparia sp. undt., Walcott, 1906 Ptychoparia (Liostracus) intermedia Walcott, 1906 Ptychoparia (Liostracus) subrugosa ^^Anomocarella subrugosa (Walcott) Walcott, 1906 Ptychoparia (Liostracus) thraso =z Anomocarella thraso (Walcott) Walcott, 1905 Ptychoparia (Liostracus) toxeus =z Anomocarella toxeus (Walcott) Walcott, 1905 Ptychoparia (Liostracus) tragus =^ Anomocarella trogus (Walcott) ' Walcott, 1905 Ptychoparia (Liostracus) tutia =1 Anomocarella tutia (Walcott) Walcott, 1905 Ptychoparia (Proampyx) burca =Proampyx burea (Walcott) Walcott, 1905 Shantungia Lorenz, 1906 = Chuangia Walcott Shantungia Walcott, 1905 = Shantungia Walcott Shantungia buchruckeri Lorenz, 1906 = Chuangia nitida Walcott ::=Menocephalus abderus (Walcott) =zMenocephalus acantha (Walcott) ^=Mcnocephalus acidalia (Walcott) r= Conocephalina belus (Walcott) ^Blackzuelderia sinensis (Bergeron) = H'Ucnella orientalis (Walcott) Solenopleura abderus Walcott, 1905 Solenopleura acantha Walcott, 1905 Solenopleura acidalia Walcott, 1905 Solenopleura belus Walcott, 1905 Stephanocare sinensis Monke, 1903 Syntrophia orientalis Walcott, 1905 The following- is a list of the species described or figured in this paper, with page and plate and figure references to the plates accom- panying this paper. The list includes not only the new species from China, but the old species which have been made the types of new genera (Ptychoparia (Emmrichella) theano, Inoiiyia capax, Lisania hura, Chuangia batia; and Levisid' agenor) ; three new species from Alabama (Coosia superba, Coosa robusta, and Anomocare convexa), Coosia superba being the type of that genus ; and the type of the genus Anomocare (Anomocare Iceve). Micromitra (Pateriwa) lucina Walcott, p. yz, pi. 14, fig- i- Lingulella manchuricnsis Walcott, p. 74, pi. 14, figs. 2, 2a. Lingulella marcia Walcott, p. 74, pi. 14, figs. 3, 3a. NO. 4 CAMBRIAN FAUNAS OF CHINA 73 Acrotreta venia Walcott, p. 75, pi. 14, figs. 4, 4a. Orthotheca glabra Walcott, p. 75, pi. 14, figs. 5, 5a. Albertella pacifica Walcott, p. 76, pi. 14, fig. 6. Stephanocarc f nionkei Walcott, p. yy, pi. 14, fig. 7. Ptychoparia granosa Walcott, p. yy, pi. 14, fig. 8. Ptychoparia (Eriimrichella) theano (Walcott), p. 79, pi. 14, figs. 9, ga. Ptychoparia kochibei Walcott, p. 78, pi. 14, figs. 10, loa. Crcpicephalns convexus Walcott, p. 79, pi. 14, figs. 11, iia. Pterocephalus ? lichcs Walcott, p. 80, pi. 14, fig. 12. Inouyia capax (Walcott), p. 80, pi. 14, fig. 13. Inouyia ? thisbe Walcott, p. 81, pi. 14, fig. 14. Agraulos sorge Walcott, p. 82, pi. 15, fig. i. Lisania bura (Walcott), p. 82, pi. 15, fig. 2. Chuangia batia (Walcott), p. 84, pi. 15, figs. 3, 3a. Chuangia fragmcnta Walcott, p. 84, pi. 15. fig. 4. Chuangia nais Walcott, p. 84, pi. 15, fig. 5. Chuangia nitida Walcott, p. 85, pi. 15, fig. 6. Levisia agenor (Walcott), p. 86, pi. 15, fig. 7. Anomocare ephori Walcott, p. 90, pi. 15, figs. 8, 8a. Anomocare lisani Walcott, p. 90, pi. 15, figs. 9, ga-b. Anomocarella hermias Walcott, p. 92, pi. 15, fig. 10. Anomocarclla niacar Walcott, p. 92, pi. 15, figs. 11, iia-b. Coosia superba Walcott, p. 94, pi. 16, figs, i, la. Coosia robusta Walcott, p. 97, pi. 16, figs. 2, 2a. Asaphiscus iddingsi Walcott, p. 99, pi. 16, fig. 3. Bathyuriscus manchuriensis Walcott, p. 97, pi. 16, fig. 4. Solenopleura chalcon Walcott, p. 83, pi. 16, fig. 5. Anomocare Icsve Angelin, p. 87, pi. 17, figs, i, la-c. Anomocare convexa Walcott, p. 87, pi. 17, figs. 2, 2a-d. Anomocarella smithi Walcott, p. 92, pi. 17, figs. 3, 3a. Levisia richardsoni Walcott, p. 86, pi. 17, figs. 4, 4a. Levisia nasuta Walcott, p. 87, text figs. 7, 7a ; pi. 17, fig. 5. The memoir on th& Cambrian faunas of China is now well ad- vanced and will probably be printed and distributed the latter part of the year 191 i. BRACHIOPODA MICROMITRA (PATERINA) LUCINA, new species Plate T4. fig. I Ventral valve, depressed subconical, with a minute beak curving over and concealing the pseudo-deltidium. The cardinal slope is bent abruptly backward and downward so as to form a narrow false area on each side of a wide, open, triangular space. Dorsal valve transverse, gently convex, with the nearly straight posterior margin shorter than the greatest width of the valve ; beak minute, marginal ; false area unknown. Surface marked by concentric, slightly irregular, rounded lines and ridges of growth that may or may not be grouped in bands of 74 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 varying width. A dorsal valve shows a few fine, faint, radiating ridges. A ventral valve 3 mm. in width has a length of 2.75 mm. and a height of I m.m. A dorsal valve with a width of 2.5 mm. has a length of 2 mm. and a height of 0.5 mm. at the beak. Observations.—In form the ventral valve of this species is not unlike that of Micromitra sciilptilis (Meek) except that it is not as elevated and its surface is quite different. It is associated with M. sciilptilis and the two varieties of Micromitra {Iphidella) panmila,— oplnrensis and maladensis. Formation and locality.—Middle Cambrian: Fu-chou series; (35n and 35r) limestones and (36d) shales near the base just above the white quartzite, collected in a low bluff on the shore of Tschang- hsing-tau island, east of Niang-niang-kung, Liau-tung, Manchuria. China. Collected by J. P. Iddings and Li San. LINGULELLA MANCHURIENSIS, new species Plate 14, figs. 2, 2a This species and Lingulella marcia belong to a group of small, elongate, oval shells that are represented in the Rocky Mountain Province Cambrian fauna by Lingulella mamticvda (White) and in the Atlantic Province fauna by L. ataz'a (Matthew), L. collicia (Matthew), L. ferruginea (Salter), L. nanno (Walcott), and a num- ber of similar forms. Lingulella manchuriensis appears to be most nearly related to L. similis (Walcott). It differs in the broader, more rounded posterior half of the ventral valve. The average length of the ventral valve is 3 mm. among the large number of shells that occur in both limestone and shale. Formation and locality.—Middle Cambrian: (35p) Fu-chou series; shales about 80 feet (24 m.) above the white quartzite, col- lected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang-kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. LINGULELLA MARCIA, new species Plate I, figs. 3, 3a This species is one of the small forms allied to the group of simi- lar shells mentioned under L. manchuriensis. It differs from the latter species in being relatively broader in outline, with the sides of the valves less uniformly arched, and in having a more broadly rounded frontal margin. NO. 4 CAMBRIAN FAUNAS OF CHINA 75 Interiors of the ventral valve indicate that the area was relatively shorter than that of L. similis (Walcott). Most of the shells in the limestone are less than 2 mm. in length ; a few ventraf valves in the shale are 3 to 5 mm. long. Formation and locality.—Middle Cambrian: (35q and 36h) Fu- chon series; abont 200 feet (61 m.) above the white quartzite ; also in shales about 130 feet (40 m.) above the white quartzite; collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang-kung, Liau-tung, Manchuria, China. Collected bv ]. P. Iddings and Li San. A form flattened in the shale of locality 36f, which is much higher, but in the same section as the locality represented by L. marcia, has the outline of the latter species and is tentatively referred to it. This gives an extended stratigraphic range for the species, but not so great as that of L. similis (Walcott) which occurs in both the Mid- dle and Upper Cambrian. ACROTRETA VENIA, new species Plate 14, figs. 4, 4a Acrotreta venia is closely related to A. shantKugeiisis Walcott. It differs in having a slightly less elevated ventral valve and a more distinct and broader flattening of the posterior side and margin. The faintly defined false area and apex of the valve curve slightly over the porterior margin. The dorsal valve does not show the median depression of the dorsal valve of A. shantiingensis. Of the Amer- ican Pacific Province species of Acrotreta, it most nearly approaches A. idahocnsis (Walcott) in the external form of the valves. The vascular markings on the interior of the dorsal valve differ in detail as may be seen by comparing them. Foniiation and locality.—Middle Cambrian: (35q) Fu-chuu series; about 200 feet (61 m.) above the white quartzite, collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang- kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. ORTHOTHECA GLABRA, new species Plate 14, figs. 5, sa Form an elongate, slender, rounded tube, with the dorsal face less convex than the sides and ventral face. Transverse section round, 76 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 excepir for the slightly flattened dorsal side. Operculum unknown. Shell rather thick, and with a smooth surface. The largest specimen in the collection has a length of 5 mm. Observations.—This species is distinguished from other Chinese forms by its rounded tube and smooth surface. It is the representa- tive in form of the American Orthotheca communis Billings.' Orthotheca glabra occurs abundantly in association with Hyolithcs cybele Walcott, in the Dorypyge richthofeni zone of Manchuria. Some of the shells have a long, slender terminal section to the tube that is more or less slightl}- curved. It is so slender and round that it suggests the tube of Hyolithellns.^ Formation and locality.—Middle Cambrian: (C71) massive cliff making limestone in the central portion of the Ki-chou formation, 4 miles (6.4 km.) southwest of Tung-yii ; and (C72) thin green gray limestone interbedded with ocherous and green clay shales, overlying the massive oolite in the Ki-chou formation, 4 miles (6.4 km.) east of Fang-lan-chon ; both in Shan-si, China. Collected by Eliot Blackwelder. Also (35n) Middle Cambrian: Fu-chou series; limestones near the base of the series just above the white quartzite, collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang- niang-kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. ALBERTELLA PACIFICA, new species Plate 14, fig. 6 Of this form only one fragment of the pygidiu'm was found in the collection from Manchuria. This is so characteristic that I do not hesitate to identify it as the pygidium of an Albertella although stratigraphically it occurs at a higher horizon in the Middle Cambrian than the American species of the genus. A pygidium illustrated by M. Barrande as Paradoxides desidcratus Barrande ^ may possibly belong to a species of Albertella. The axial lobe of the pygidium has seven rings and a terminal section and the pleural lobes have lateral spines. Formation and locality.—Middle Cambrian: (36f) Fu-chou series; about 1000 feet (305 m.) above the white quartzite, collected in a ^ Tenth Ann. Rept. U. S. Geol. Survey, 1891, pi. 77, figs. 3, 3a-g. * Idem, pi. 79, fig. I a. ^ Barrande, 1852, Systeme Silurien du Centre de la Boheme, Vol. I, pi. 12, fig- 15- NO. 4 CAMBRIAN FAUNAS OF CHINA "JJ low bluff on the shore of Tschang-hsing-tau island, east of Niang- niang-kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. STEPHANOCARE ? MONKEI, new species Plate 14, fig. 7 Steplianooare sp. Monke, 1903, Jahrb. Konig. Preuss. Geol. Landesanst. und Bergakad., Vol. 23, Pt. i, p. 144, pi. 8, figs, i, la, 2-4. (Described and discussed.) Doctor Monke doubtfully refers a cephalon, two pygidia, and a free cheek to Stephanocare. Similar pygidia occur on the platy limestones collected by Mr. Blackwelder and as they are clearly dis- tinct from any described species I give them the specific name of S. ? monkei in recognition of the most excellent work done by Doctor Monke on this interesting fauna. The generic reference is in doubt as we have no entire specimens of Stephanocare richthofeni Monke and of this species for comparison. Formation and locality.—Middle Cambrian: (C6) thin slabby limestone in the upper shale member of the Kiu-lung group, 2.5 miles (4 km.) southwest of Yen-chuang, Sin-t'ai District, Shan-tung, China. Collected by Eliot Blackwelder. PTYCHOPARIA GRANOSA, new species Plate 14, fig. 8 Ptychoparia granulosa Walcott, 1905, Proc. U. S. National Museum, Vol. 29, p. 78. (Species described as below. This species is believed to be congeneric with Hall and Whitfield's species; since the name granulosa is therefore preoccupied for Ptychoparia, granosa is proposed.) Not Crepicephalus {Loganellus) granulosus Hall and Whitfield, 1877, Geol. Expl. Fortieth Parallel, Vol. 4, p. 214, pi. 2, figs. 2, 3. The gently convex central portions of the cephalon, exclusive of the free cheeks, are all that is known of this species. These indicate a rather broad, semicircular cephalon, with small free cheeks, wide fixed cheeks, narrow, short, convex glabella, and narrow, flattened frontal rim ; glabella marked by three pairs of faintly impressed but clear glabella furrows ; frontal space between the glabella and rim broader than the frontal rim and slightly convex ; palpebral ridge narrow, clearly defined, and merging into a rather small pye lobe. Surface finely granulose. 78 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 Formation and locality.—Lower Cambrian: (C17) ferruginous limestone nodules in the brown sandy shales at the top of the j\Ian-t'o shale, at Ch'ang-hia, Shan-tung, China. Collected by Eliot Blackwelder. PTYCHOPARIA KOCHIBEI, new species Plate 14, figs. 10, loa The cephalon of P. kochibei, in outline, wide fixed cheeks, broad frontal limb, and broadly rounded front margin of the gabella, is similar to the cephalon of Ptyclwparia granosa Walcott (pi. 14, fig. 8). It differs in having a more pronounced swelling of the frontal limb in front of the glabella, more tumid fixed cheeks, and in surface characters. The surface of P. granosa is thickly studded with minute tubercles, while that of P. kochibei is smooth or possibly finely punc- tate ; its frontal limb is also marked by fine, irregular, sometimes inosculating, rounded ridges that extend from in front of the glabella and palpebral ridges to the groove within the flattened frontal rim (pi. 14, fig. loa). The thorax has fourteen transverse segments with a narrow axial lobe and wide pleural lobes. The pleural furrow starts on the inner front side of the pleural lobe of each segment and, widening nearly to the width of the segment, begins to narrow at the point of geniculation and terminates near the posterior margin at the somewhat abrupt falcate termination of the pleura. Pygidium small ; the axial lobe is crossed by two furrows that serve to outline two transverse rings and a terminal section ; tv/o anchylosed segments are outlined on the pleural lobes on each side of the axial lobe by furrows that curve gently backward toward the faintly defined border. Surface finely punctate or slightly roughened by minute depres- sions. Observations.—This is the only Chinese species of PtycJwparia of which we have the entire dorsal shield ; all the other species are represented by the separated parts. In outline the dorsal shield is not unlike that of Ptychoparia kingi (Meek),'^ and it may be consid- ered as the Chinese representative of that species. The specific name is given in honor of the former Director of the Geological Survey of Japan, Doctor Kochibe. Formation and locality.—Middle Cambrian: (35n, 35r. and 36e) Fu-chou series ; limestones and shales interbedded with limestones ' Walcott, 1886, Bull. U. S. Geol. Survey, No. 30, p. 193. NO. 4 CAMBRIAN FAUNAS OF CHINA 79 near the base of the series just above the white quartzite, collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang-kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. EMMRICHELLA, new subgenus of PTYCHOPARIA This subgenus differs from Ptychoparia in its smooth glabella and larger palpebral lobe ; from Liostracus, in having an arched or nearly flat frontal limb and rim and more convex cranidium ; from Con- ocephalina, in its smoother glabella and wider fixed cheeks ; and from Anomocare, in its smoother glabella, usual absence of distinct palpebral ridge, proportionately shorter eye lobes, and glabella. Genotype.—Ptychoparia theano Walcott.' (pi. 14, figs. 9, 9a.) Observations.—This subgenus is characterized by a nearly smooth surface on the glabella and fixed cheeks, rather large palpebral lobes, and narrow postero-lateral limbs. Unfortunately, no entire speci- mens of the cephalon and thorax are known, and the pygidia referred to it may or may not belong to the species to which they are ten- tatively assigned. Only when a thorough study is made of all the material within the Conocephalinae will it be possible to make even a fairly adequate grouping of the species. Of the species of this subgenus from China, P. (E.) theano (Wal- cott, P. (E.) hromiis (Walcott), and P. (E.) criopia (Walcott) have the posterior, elongate palpebral lobe. In P. (E.) mantoensis (Walcott) and P. (E.) constricta (Walcott) the palpebral lobe is much like that of Ptychoparia in its position. Stratigraphic range.—Ptychoparia (Enunrichella) mantoensis and P. (E.) constricta occur at the summit of the Lower Cambrian; P. (E.) eriopia and P. (E.) theano, at the base of the Ch'ang-hia formation of the Middle Cambrian ; and P. (E.) hromus, at about the same horizon in the Kiu-lung formation. CREPICEPHALUS CONVEXUS, new species Plate 14, figs. II, iia The cranidium of this species differs from that of C. damia (Wal- cott) in its shorter frontal lobe, flatter frontal rim, and proportion- ately longer glabella. The associated pygidium has a proportionately shorter axial lobe and its sides curve outward instead of inward. Formation and locality.—Middle Cambrian : (35r) Fu-chou series; limestones near the base of the series just above the white quartzite, 'Walcott, 1905, Proc. U. S. Nat. Mus., Vol. 29, p. 82. 8o SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang-kung-, Liau-tung, ]\Ianchuria, China. Collected by J. P. Iddings and Li San. PTEROCEPHALUS ? LICHES, new species Plate 14, fig. 12 This species is represented by four specimens of the pygidium. It is quite unlike the pygidium referred to P. husiris Walcott and with the discovery of entire specimens of the dorsal shield it may be found that the generic reference is incorrect. The pygidia average 4 mm. in length and are finely preserved in the compact limestone matrix. Formation and locality.—Middle Cambrian: (35n) Fu-ch6u series; limestones near the base of the series just above the white quartzite, collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang-kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. Genus INOUYIA, new genus The species referred to this genus are represented only by the cranidium. This in the genotype has a swollen, tumid frontal limb, small palpebral lobes, a convex and more or less subrectangular glabella, strong dorsal furrows about the glabella, and clearly marked glabellar furrows. Surface apparently smooth, but with a str.ong lens it has a slightly roughened appearance caused by a shallow, irregular pitting. Genotype.—Agraulos ? capax Walcott^ (pi. 14, fig. 13). The swollen frontal limb, small palpebral lobes, and convex gla- bella at once suggest Agraulos (see pi. 15) and in fact all of the species now referred to Inouyia with the exception of /. titiana (Walcott) were at first referred to Agraulos. My reasons for sepa- rating them and creating the genus Inouyia are that the tumidity of the frontal limb is so pronounced as to become a marked feature and the glabella is more rectangular in the typical species. To these should be added the general effect of the cranidium when compared directly with the cranidium of Agraulos ceticephalus (Barrande).' I think it quite probable that when entire specimens of the dorsal 'Walcott, 1906, Proc. U. S. Nat. Mus., Vol. 30, p. 580. " Systeme Silurien du Centre de la Boheme, Vol. i, 1852, pi. 10, figs. 1-21. Barrande referred the species to the genus Arionellus, a synonym of Agraulos. NO. 4 CAMBRIAN FAUNAS OF CHINA 8l shield of the various species are available for comparison other dif- ferences will be found to exist between Inouyia and Agraulos. In grouping- the Chinese species under Inouyia some are found to be close to Agraulos, notably I. obaris (Walcott), /. acalle (Wal- cott), and /. regularis (Walcott), and it is probable that with more complete specimens of the species they will be referred to a subgenus intermediate between Inouyia and Agraulos. The wide fixed cheeks of Inouyia capax are confined to this species, as all other species referred to Inouyia have relatively narrow fixed cheeks. The large eye of /. ? inflata (Walcott) and relatively narrow frontal limb Serve to place it apart from the other species. I am not at all satisfied with the arrangement of species under Inouyia but in dealing with such fragmentary specimens much must be left to future discovery and closer work. Attention is also called to EUipsocephalus hoffi Barrande' as in that species the frontal limb is convex and the glabella subrec- tangular. The generic name is given in recognition of Dr. Kinos Ka Inouye, Director of the Imperial Geological Survey of Japan. INOUYIA ? THISBE, new species Plate 14, fig. 14 This species is represented by two broken specimens of the cran- idium. These show that the glabella is much like that of Ino^iyia fitiana (Walcott), also the fixed cheeks and palpebral lobes. It dif- fers in the transverse swelling of the frontal limb. In /. f thishe the frontal limb rises with a slight slope in front of the glabella, and curves gently downward to the margin without a trace of a frontal border as in Inouyia inflata (Walcott). In /. titiana the frontal limb is abruptly convex and there is an almost flattened border. The surface of /. f thishe is distinctly punctate and in this respect resembles Agraulos dryas. The type specimen of the craniflium has a length of 5.5 mm. Formation and locality.—Middle Cambrian: (C28) thin bedded oolitic limestone at the base of the Ch'ang-hia limestone, just above the shales in the face of the cliff one mile (1.6 km..) east-southeast of Ch'ang-hia, Shan-tung, China. Collected bv Eliot Blackwelder. ' Barrandc, 1852, Systeme Silurien du Centre de la Boheme, Vol. I, pi. 10, figs. 26, 27. 82 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 AGRAULOS SORGE, new species Plate 15, fig. I This species is represented by a single specimen of the central portions of the cephalon. Among the Chinese species referred to Agraulos it may be compared with A. dryas Walcott, from whicli it is readily distinguished by its broader, less convex glabella and its almost smooth, instead of strongly punctate, surface. Agraulos sorge appears to have had a strong occipital spine that projected upward and backward from the occipital ring ; only the base of the spine is preserved. Surface slightly roughened by a minute, irregular, shallow pitting. Formation and locality.—Middle Cambrian: (35n) Fu-ch6u series; limestones near the base of the series just above the white quartzite. collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang-niang-kung, Liau-tung, Manchuria, China. Collected by Eliot Blackwelder. Genus LISANIA, new genus Cranidium subquadrate in outline, exclusive of postero-lateral Hmbs. Glabella with slightly converging sides, broadly rounded in front and curving gently down to a narrow furrow separating it from the frontal border, without distinctly marked glabellar furrows ; occipital furrow distinct ; occipital segment strong. Fixed cheeks narrow ; palpebral lobe above the eye nearly one-third the length of the cephalon ; palpebral ridge usually defined to the edge of the dorsal furrow beside the glabella. Frontal border slightly convex and separated from the fixed cheeks and glabella by a narrow, shallow but distinct furrow. The associated free cheeks have a strong genal spine, and asso- ciated pygidia a strong central axis marked by three or four trans- verse rings and a terminal section. Surface smooth or slightly roughened by very fine shallow pits. Genotype.—Anomocarella bnra Walcott^ (pi. 15, fig. 2). Observations.—This genus is founded to receive four species that do not appear to fall within any described genus. From Pagodia it differs in having a longer eye lobe, narrower free cheeks, flatter frontal margin. Pagodia occurs with the Upper Cambrian faima, Lisania with the Middle Cambrian fauna. From Chnangia (pi. 15, fig"S- 3"6) it differs in its narrower frontal border, narrower fixed ^Walcott, 1905, Proc. U. S. Nat. Alns., Vol. 29, p. 56. NO. 4 CAMBRIAN FAUNAS OF CHINA 83 cheeks, and quite unlike associated pygidium. The three genera, Lisaiiia, Pagodia, and CJiuangia, all have a strong, nearly smooth glahella and a narrow frontal margin and do not appear to come within the limits of Agranlos, Anouiocare, Ptychoparia, Coosia, or Solcnoplcitra. The species referred to the genus are all small and unfortunately only represented by cranidia and associated free cheeks and pygidia. It may be that when entire specimens of the dorsal shield are found other marked dilYerences will appear between the three genera, Lisaiiia, Pagodia, and Chuangia. The generic name is taken from Li San, the Chinese assistant of both Dr. Bailey Willis and Dr. Joseph P. Iddings. The species referred to the genus Lisania are: L. agoiiiiis (Walcott), Kiu-lung group, Middle Cambrian. L. aja.v (Walcott), Kiu-lung group, Middle Cambrian. L. alala (Walcott), Ch'ang-hia limestone, Middle Cambrian. L. ? belenus (Walcott), Ch'ang-hia limestone, Middle Cambrian. L. bura (Walcott), Ch'ang-hia limestone. Middle Cambrian. L. cf. bura (Walcott), Ch'ang-hia limestone. Middle Cambrian. SOLENOPLEURA CHALCON, new species Plate 16, iig. 5 Only one specimen of the cranidium of this species is known. In form it is nearest to SoJcnoplcura bcvoc Walcott. It differs in having a proportionately narrower glabella, more convex free cheeks, more rounded frontal rim, and in the presence of a depression dividing the frontal limb on the median line of the glabella. Its tuberculated surface is much like that of 6". hcroc. Formation and locality.—Middle Cambrian: (35r) Fu-chou series; limestones near the base just above the white quartzite, collected in a low bluff on the shore of Tschang-hsing-tau island, east of Niang- niang-kung, Liau-tung, Manchuria, China. Collected by J. P. Iddings and Li San. Genus CHUANGIA, new genus This genus is proposed for a group of Upper Cambrian trilobites in which the cephalon has a truncato-conical or subquadrangular glabella ; a narrow, concave frontal limb ; and, so far as known, a smooth test. 84 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 The associated pygidium is large, with a strong axis, broad pleural lobes, and few indications of segments. The general form of the glabella is much like that of some species of Anomocare (pi. 17) but the frontal limb is quite difit'erent. The latter suggests Pagodia lotos Walcott but the frontal limb of the latter is absorbed by the rounded frontal rim. In Chiiungia the frontal limb and rim meet to form an angle and the rim does not rise above the upward sloping surface of the frontal limb. Genotype.—Chuangia hatia Walcott^ (pi. 15, figs. 3, 3a). Three other species are known from the Upper Cambrian formations of China: Chuangia nitida, C. nais, and C. fragmcnta. CHUANGIA FRAGMENTA, new species Plate 15, fig. 4 Only a fragment of the cephalon of this species is known. This suggests the glabella of Chuangia hatia, but the narrow fixed cheeks serve to distinguish it. The surface is smooth to the unaided eye, and slightly pitted or punctate under a strong lens. The fragment of the cephalon has a length of 16 mm. Formation and locality.—Upper Cambrian: (C61) a dense black limestone in the uppermost limestone member of the Kiu-lung group, 3 miles (4.8 km.) southwest of Yen-chuang, Sin-t'ai District, Shan- tung, China. Collected by Li San. CHUANGIA NAIS, new species Plate 15, fig. 5 This is a large species that is represented by a part of the central portions of the cephalon. Glabella subquadrangular, moderately convex, narrowing slightly toward its broadly rounded front ; with- out glabellar furrows so far as can be determined ; occipital furrow shallow, rather broad, and nearly transverse ; occipital ring gently convex, arid slightly wider toward the center ; dorsal furrow shallow and clearly defined. Fixed cheeks about two-thirds the width of the glabella, nearly liat between the glabella and the palpebral lobes, and sloping down- ward in front to the frontal rim, and back to the posterior furrow ; ' Walcott, 1905, Proc. U. S. Nat. Mus., Vol. 29, p. 75. NO. 4 CAMBRIAN FAUNAS OF CHINA 85 palpebral lobe small ; palpebral ridge narrow, low, and situated so as to cross the fixed cheek obliquely where the downward slope to the front is most marked ; postero-lateral limbs long, with a strong fur- row within the strong rounded rim ; the front of the glabella passes into the broad groove that merges into the upward sloping, narrow frontal limb ; frontal rim rounded and marked by rather strong striae parallel to the front border. Surface smooth to the unaided eye ; a strong lens shows a slight, irregular pitting where the outer surface is intact. The type speci- men of the cephalon has a length of 20 mm. Observations.—This species was at first confused with Chuangia batia. It differs from the latter in the form of the g'labella, and the size of the palpebral lobes and frontal limb. The same features dis- tinguish it from Chuangia nitida and C. fragmcnta. Formation and locality.-—-Upper Cambrian: (C64) upper lime- stone member of the Kiu-lung group, 2.7 miles (4.3 km.) southwest of Yen-chuang, Sin-t'ai District, Shan-tung, China. Collected by Eliot Blackwelder. CHUANGIA NITIDA, new species Plate IS, fig. 6 Only the central portions of the moderately convex cephalon of this species is known. Within the facial sutures the outline is sub- quadrangular, exclusive of the short postero-lateral limbs. Glabella slightly convex, truncato-conical, with a very slight trace of short, slightly oblique posterior glabellar furrows ; the latter are shown more distinctly on the cast of the interior ; occipital furrow shallow and clearly defined ; occipital ring slightly convex and rather broad toward the center ; dorsal furrow shallow at the sides of the glabella. Fixed cheeks about one-half the width of the glabella, gently con- vex; palpebral ridges strong, low, and passing obliquely backward to the rim of a rather large palpebral lobe ; the latter is a little longer than one-third the length of the cephalon. The frontal limb is repre- sented by the short concave space in front of the glabella which forms a sharp angle in uniting with the frontal limb. Surface, slightly pitted when seen through a strong magnifying glass. Length of cephalon, 7 mm. Observations.—This species is much smaller than the type species, Chuangia batia. It differs from the latter in its narrower frontal 86 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 limb, larger palpebral lobes, and more elongate glabella. From Chiiangia nais and C. fragmenta it differs in its longer palpebral lobes and in the outline of the glabella. Formation and locality.—Upper Cambrian: (Cii) crystalline limestone 60 feet (18 m.) above the base of the uppermost limestone member, 2.1 miles (3.4 km.) southwest of Yen-chuang. Sin-t'ai Dis- trict, Shan-tung, China. Collected by Eliot Blackwelder. Genus LEVISIA, new genus This genus is proposed to include a group of small trilobites repre- sented by Agraulos agenor Walcott.^ The cranidium is strongly convex ; glabella truncato-conical, tumid, and with only a trace of glabellar furrows ; occipital ring narrow at the sides, broadening rapidly toward the center, convex, and extending backward into an obtuse spine. Frontal limb very narrow and passing almost without any line of demarcation into the rather broad, slightly convex frontal margin of the cephalon. Fixed cheeks tumid, about half as wide as the glabella and with small palpebral lobes midway of their length. Postero-lateral limbs rather short and marked by a deep, narrow, intermarginal posterior furrow that separates a narrow, rounded margin. Genotype.—Agraulos agenor Walcott^ (pi. 15, fig. 7). A second species, Levisia adrastia (Walcott) " has the same generic charac- ters. Its surface has the same pitting and in addition a few relatively- large, scattered granules. LEVISIA RICHARDSONI, new species Plate 17, figs. 4, 4a Two species of this genus occur with an Upper Cambrian fauna in the boulders of the conglomerate at Point Levis, opposite Quebec, Canada. The first I shall give the name of Levisia riclmrdsoiii in recognition of the fine collecting work done by ]\Ir. J. Richardson under the direction of Sir William E. Log-an. ^ Walcott, 1905, Proc. U. S. Nat. Mus., Vol. 29, p. 44. " Idem, p. 61. NO. 4 CAMBRIAN FAUNAS OF CHINA 87 LEVISIA NASUTA, new species Plate 17, fig. 5 and text figs. 7 and 7a. The second Canadian species associated with Levisia richardsoni is Lcvisa nasiita. The glabella of this species is very convex ; fixed cheeks narrow and merging anteriorly into the bluntly pointed frontal limb and margin. A dorsal view of the cranidium is given on plate 17, figure 5, and the accompanying text figures show a front and side view of the specimen represented on plate 17. 7 7"^ Levisia nasnta, new species. Figs. 7, 7a.—Side and front views, X 10. U. S. National Museum, Catalogue No. 57600. Genus ANOMOCARE Angelin Anomocare Angelin, 1854, Paleontologia Scandinavica, Edition of 1878, p. 24. For the purpose of comparison a cranidium. free cheek, and pygiditim of Anomocare I< 8. U. S. National Museum, Catalogue No. 57564. 4a. Anterior portion of a dorsal valve howing median ridge and central muscle scars. X 8. S. National Museum, Catalogue No. 57565. Orthotheca glabra Walcott 75 Fig. 5. A partially exfoliated specimen. X 8 U. S. National Museum, Catalogue No. 57566. 5a. A minute, slender, broken specimen X 8. U. S. National Museum, Catalogue No. 57567. Albertella paciUca Walcott 76 Fig. 6. Photograph of a fragmentary pygidium. X 2. U. S. National Museum, Catalogue No. 57568. Stephanocare ? monkei Walcott yy Fig. 7. Pygidium doubtfully referred to this genus. X 2. It is asso- ciated with Stephanocare sinensis (Bergeron). U. S. National Museum, Catalogue No. 57601. Ptychoparia granosa Walcott " yy Fig. 8. Dorsal view of a cranidium. X 3- '• S. National Museum, Catalogue No. 57602. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57, NO. 4, PL. 14 CAK BRIAN FAUNAS OF CHINA NO. 4 CAMBRIAN FAUNAS OF CHINA IO3 PAGE Ptychoparia (Eminrichclla) themio (Walcott) 79 Figs. 9 and 9a. Top view and side outline of cranidium. X 4- The type specimen of the species and subgenus. U. S. National Museum, Catalogue No. 57603. Ptychoparia kochibei Walcott 78 Fig. id. Dorsal shield. X 4- Flattened in the argillaceous shale. U. S. National Museum, Catalogue No. 57569. loa. Cranidium in limestone. X 4. U. S. National Museum, Cata- logue No. 57570. Crepicephalus convexus Walcott 79 Fig. II. Dorsal view of a broken specimen of the cranidium. X 3- U. S. National Museum, Catalogue No. 57571- iia. Dorsal view of pygidium. X 3- U. S. National Museum, Catalogue No. 57572. Pterocephalus ? Itches Walcott 80 Fig. 12. Dorsal view of the type specimen of the pygidium. X 4, U. S. National Museum, Catalogue No. 57573- Inouyia melie (Walcott)^ 80 Fig. 13. Top view and side outline of cranidium (X 3), the type speci- men of the species and genus. U. S. National Museum, Catalogue No. 57604. Inouyia ? thisbe Walcott 81 Fig. 14. Dorsal view of the type specimen of the species. X 3- U. S. National Museum, Catalogue No. 57574. ^ By error a figure of the cranidium of Inouyia melie ^=: Agraulos ? melie Walcott 1906 was put on the plate instead of the cranidium of Inouyia capax. 104 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 DESCRIPTION OF PLATE 15 PAGE Agraulos sorge Walcott 82 Fig. I. Dorsal view of the type specimen, a cranidium. X 4- U. S. National Museum, Catalogue No. 57575. Lisania bura (Walcott) 82 Fig. 2. Top view and side outline of cranidium (X 4), the type speci- men of the species and genus. U. S. National Museum, Catalogue No. 57605. Chuangia batia ( Walcott) 84 Fig. 3. The type of the species and genus, a specimen in which the test has been exfoliated. Natural size. U. S. National Museum, Catalogue No. 57606. 3a. Pygidium partially exfoliated. Natural size. U. S. National Museum, Catalogue No. 57576. Chuangia fragmcnta Walcott 84 Fig. 4. Dorsal view of a fragment of the cranidium. X i-5. U- S. National Museum, Catalogue No. 57607. Chuangia nais Walcott 84 Fig. 5. Dorsal view of a fragmentary specimen of the cranidium. Natural size. U. S. National Museum, Catalogue No. 57608. Chuangia nitida Walcott 85 Fig. 6. Dorsal view of a nearly entire cranidium. X 3- U- S. National Museum, Catalogue No. 57609. Levisia agenor (Walcott) 86 Fig. 7. Top view and side outline of cranidium (X4), the type specimen of species and genus. U. S. National Museum, Catalogue No. 57610. Anomocare ephori Walcott 90 Fig. 8. Dorsal view of the cranidium. X 2. U. S. National Museum, Catalogue No. 57577. 8a. Associated pygidium. X 2. U. S. National Museum, Cata- logue No. 57578. Anomocare lisani Walcott 9° Fig. 9. Portions of a cranidium preserving the convexity. X 2. U. S. National Museum, Catalogue No. 57579. 9a. A cranidium flattened in the shale. Natural size. U. S. National Museum, Catalogue No. 57580. 9b. Associated pygidium. X 2. U. S. National Museum, Cata- logue No. 57581. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 67, NO. 4, PL. 1B CAMBRIAN FAUNAS OF CHINA NO. 4 CAMBRIAN FAUNAS OF CHINA IO5 PAGE Anomocarella hermias Walcott 92 Fig. 10. The cranidium with a portion of the pygidium on the same piece of rock. X 4- U. S. National Museum, Catalogue No. 57582. Anomocarella macar Walcott 92 Fig. II. A broken cranidium. Natural size. U. S. National Museum, Catalogue No. 57583. iia. A small cranidium. X 3. U. S. National Museum, Catalogue No. 57584. lib. A pygidium. X i-S- U. S. National Museum, Catalogue No. 57585. ^ I06 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 DESCRIPTION OF PLATE i6 PAGE Coosia superha Walcott 94 Fig. I. The type specimen of the species and genus, a nearly entire dorsal shield with the exception of the free cheeks of the cephalon. Natural size. U. S. National Museum, Catalogue No. 57589. la. Side view of the specimen represented by Fig. i. Natural size. Coosia robusta Walcott 97 Fig. 2. Dorsal view of the type specimen, a cranidium. Natural size. U. S. National Museum, Catalogue No. 57590. 2a. Pygidia associated with the specimen represented by Fig. 2. X 2. U. S. National Museum, Catalogue No. 57591. AsapJiiscus iddingsi Walcott 99 Fig. 3. A dorsal shield flattened in argillaceous shale. X 2. U. S. National Museum, Catalogue No. 57586. Batliyiirisciis manchuricnsis Walcott 97 Fig. 4. Fragment of shale with flattened cranidia and pygidia. X 3- U. S. National Museum, Catalogue No. 57587. Solcnopleura chalcon Walcott 83 Fig. 5. Dorsal view of cranidium. X 4- U. S. National Museum, Catalogue No. 57588. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 67, NO. 4. PL. 16 CAMBRIAN FAUNAS OF CHINA I08 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 DESCRIPTION OF PLATE 17 PAGE Anomocare Iceve Angelin 87 Figs, i and la. Dorsal and side view of an unusually perfect cra- nidium. Natural size. U. S. National Museum, Catalogue . No. 57592. lb. Associated free cheek. X 1.5. U. S. National Museum, Cata- logue No. 57593- ic. Associated pygidium. X 2. U. S. National Museum, Cata- logue No. 57594- From locality (8w) Middle Cambrian : Paradoxides forchhammeri zone, Andrarum, Province of Cliristianstad, Sweden. Anomocare convexa Walcott 87 Figs. 2 and 2a. Dorsal and side views of an imperfect specimen of the dorsal shield. Natural size. U. S. National Museum, Catalogue No. 57595- 2b. Dorsal view of a pygidium of a specimen (natural size) asso- ciated with that represented by Fig. 2. U. S. National Museum, Catalogue No. 57596. 2c. and 2d. Side and dorsal views of a cranidium (X2) showing anterior portion, facial sutures, and irregular radiating lines. U. S. National Museum, Catalogue No. 57597. Anomocarella smithi Walcott 92 Fig. 3. Photograph of a portion of a flat, siliceous nodule on which several specimens of nearly entire dorsal shields occur. X 2. U. S. National Museum, Catalogue No. 57598. Fig. 3a. Side view of a dorsal shield on the right side of the specimen represented by Fig. 3. U. S. National Museum, Catalogue No. 57598- Lcvisia richardsoni Walcott 86 Figs. 4 and 4a. Dorsal and side views of cranidium. X 8. U. S. National Museum, Catalogue No. 57599. Levisia nasuta Walcott (text figures 7 and 7a, page 87) 87 Fig. 5. Dorsal view of cranidium (X 10), the type specimen of the species and genus. U. S. National Museum, Catalogue No. 57600. (See text figures for side and front views.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57, NO. 4, PL. )7 CAMBRIAN FAUNAS OF CHINA