BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 951 



Pentamerus divergens Foerste. 



Pentamerus divergeng Foerste, Cincinnati Soc. Nat. Hist. Jour., 21, 1909, p. 28, 



pi. 1, figs. 5A-E; pi. 2, figs. 17A, B. 

 Cayugan (Kokomo): Kokomo, Indiana. 



PENTAMERUS FORNICATUS Hall. See Clorinda fornicata. 



PENTAMERUS GALEATUS Roemer. See Gypidula roemeri. 



PENTAMERUS GALEATUS Hall. See Gypidula (Sieberella) galeata. 



PENTAMERUS GALEATUS Hall and Whitfield. See Gypidula nucleus. 



PENTAMERUS GLOBULOSUS Nettelroth. See Gypidula globulosa. 



PENTAMERUS HEMIPLICATUS Hall. See Parastrophia hemiplicata. 



PENTAMERUS INTERPLICATUS Hall. See Anastrophia interplicata. 



PENTAMERUS KNAPPI Hall and Whitfield. See Conchidium knappi. 



PENTAMERUS KNIGHTI Nettelroth. See Conchidium nettelrothi. 



PENTAMERUS KNOTTI Nettelroth. See Gypidula knotti. 



PENTAMERUS LAQUEATUS Conrad. See Conchidium laqueatum. 



PENTAMERUS LITTONI Hall. See Conchidium littoni. 



PENTAMERUS MULTICOSTATUS Hall. See Conchidium multicostatum. 



PENTAMERUS NOBILIS Emmons. See Conchidium laqueatum. 



PENTAMERUS NUCLEUS Hall and Whitfield. See Gypidula nucleus. 



PENTAMERUS NYSJUS Hall. See Conchidium nysius. 



PENTAMERUS NYSIUS var. CRASSICOSTA Hall and Whitfield. See Conchidium nysius. 



PENTAMERUS NYSIUS var. TENUICOSTA Hall and Whitfield. See Conchidium 

 tenuicostatum. 



PENTAMERUS NYSIUS var. TENUISCOSTATUS Nettelroth. See Conchidium nysius. 



Pentamerus oblongus Sowerby. 



Pentamerus oblongus Sowerby, Murchison's Sil. Syst., 1839, p. 641, pi. 19, fig. 

 10. Hall, Geol. New York Hep. 4th Diet., 1843, p. 70, figs. 1-5. Owen, 

 Geol. Expl. Iowa, Wisconsin, and Illinois, 1844, pi. 14, fig. 10; Amer. Jour. Sci. 

 Arts, 48, 1845, p. 304, figs. 1-5. Hall, ibid., 2d ser., 20, 1849, p. 227; Pal. 

 New York, 2, 1852, p. 79, pi. 25, fig. 1. Marcou, Geol. Map United States 

 and British Prov., etc., 1853, p. 27, pi. 2, fig. 3. Billings, Canadian Nat. 

 Geol., 1, 1856, p. 58, pi. 1, figs. 2, 3; Geol. Canada, 1863, p. 316, fig. 326. 

 Chapman, Canadian Jour., n. s., 7, 1862, p. 115, figs. 107, 107a; ibid., 8, 1863, 

 p. 210, fig. 213; Expos. Min. and Geol. Canada, 1864, p. 118, figs. 107, 107a; 

 p. 182, fig. 213. Davidson, Mon. British Sil. Brach., Pal. Soc., 1867, p. 151, 

 pi. 18, figs. 1-12; pi. 19, figs. 1, 2. Billings, Geol. Mag., 5, 1868, pi. 4, fig. 3. 

 Hall and Whitfield, 24th Rep. New York State Cab. Nat. Hist., 1872, p. 183; 

 Geol. Surv. Ohio Pal., 2, 1875, p. 137, pi. 7, fig. 9. Whitfield, Geol. Wiscon- 

 sin, 4, 1882, p. 288, pi. 17, figs. 4-9. Chamberlin, Geol. Wisconsin, 1, 1883, 

 p. 192. Lesley, Geol. Surv. Pennsylvania, Hep. P 4, 1889, p. 617, figs. 

 Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Surv., 1889, p. 60, 

 pi. 33, figs. 15-17. Hall and Cllarke, Pal. New York, 8, pt. 2, 1895, p. 237, 



