scHrrHKET.] INDEX AND BIBLIOGRAPHY. 185 



Clorinda ventricosa (Hall). Niagara (Sil.). 



Pentainenis ventricosa Hall, Geo!. Survey Wisconsin ; Kcp. Progress, 1860, p. 2. — 



Whitfield, Geol. Wisconsin, IV, 1882, p. 291, pi. 17, figs. 11-13.— Nettelroth, 



Kentuckj' Fossil Shells, Mem. Kentucky Survey, 1889, p. 64, pi. 33, figs. 12-14. 

 Pentamerus chicagoensis Winchell and Marcy, Mem. Boston Soc. Nat. Hist., I, 



1865, p. 94, pi. 2, fig. 11.— Hall, Twentieth Rep. New York State Cab. Nat. 



Hist., 1868, p. 392. 

 Pentamerus (Pentamerella?) ventricosa Hall, Twentieth Rep. New York State 



Cab. Nat. Hist., 1868, p. 374, pi. 13, figs. 18-21. 

 Pentamerus (Pentamerella) ventricosus Hall and Whitfield, Pal. Ohio, II, 1875, 



p. 138, pi. 7, figs. 7, 8. 

 Barraudella ventricosa Hall and Clarke, Pal. New York, YIII, Pt. II, 1893, p. 



243, pi. 71, figs. 4-10; pi. 84, fig. 46. 

 Loc. Waukesha, Wisconsin ; Bridgeport, Illinois; Louisville, Kentucky; Ohio. 



Coelospira Hall=Auoplotheca. 



Coelosi3ira coucava Hall 1867 (not 1863)=Aiioplotheca Camilla. 



Coelospira disparilis Hall=Atrypiua disparilis. 



CONCHIDIUM Liniie. Genotype C. biloculare Linn^. 



Couchidium Linu6, Museum Tessinianum, 1753, p. 90 ; — Systema Naturi«, ed, xi, II, 



1760, p. 163.— CEhlert, Fischer's Manuel de Conchyliologie, 1887, p. 1311.— Hall 



and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 231;— Thirteenth Ann. Rep. 



New York State Geologist, 1895, p. 842. 

 Helmiutholitus Linn6, Systema Natur*, ed. xii, IV, 1766, p. 163. 

 Pentamerus Sowerby (non Pentamera Dumeril, 1806), Mineral Conchology, I, 



1813, p. 73. 

 Gypidia Dalman, Kongl. Svenska Vet.-Akad. Handl., for 1827, 1828, pp. 93, 100. 

 Pentamerus Billings, Canadian Jour., VI, 1861, p. 269. — Hall, Twentieth Rep. 



New York State Cab. Nat. Hist., 1867, p. 163;— Pal. New York, IV, 1867, pp. 



369, 373. — Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Survey, 



1889, p. 52. 

 Antirhynchonella Quenstedt, Petref. Deutschlands, Brach., 1871, p. 231. 

 Zdimir Barrande, Syst('me Silurieu Boheme, VI, 1881, p. 171. 



Conchidium biloculare Linue. Silurian. 



Couchidium biloculare Linnd, Systema Natura*, ed. xi, II, 1760, p. 163. — Hall 



and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 233, pi. 6, figs. 11-14. 

 Pentamerus conchidium Emmerson, Geol. Frobisoher Bay; Nourses Narr. Hall's 



Arctic Exped., 1879, p. 578. 

 Loc. Europe ; Rescue Harbor, Arctic America. 



Conchidium coUetti (Miller). Waterlime (Sil.). 



Petamerus colletti Miller, Seventeenth Rep. State Geol. Indiana, 1891, p. 77, pi. 



13, figs. 5, 6. 

 Conchidium colletti Hall and Clarke, Pal. New York, VIII, Pt. II, 1893, p. 235, 



pi. 66, figs. 16, 17. 

 Loc. Kokomo, Indiana. 

 Ois. Compare with C. laqueatum Conrad. 



Conchidium crassiplica Hall and Clarke. Niagara (Sil.). 



Conchidium crassiplica Hall and Clarke, Pal. New York, VIII, Pt. II, 1895, pp. 



235, 369, pi. 66, figs. 24, 25. 

 Loc. ?Near Louisville, Kentucky. 



Conchidium crassiradiatum (McCbesiiey). Niagara (Sil.). 



Pentamerus crassoradius McChesney, Descriptions New Pal. Foss., 1861, p. 87. 

 Loc. Milwaukee, Wisconsin. 



