BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 199 



Ceratopsis chambers! (Miller). 



Beyrichia chambers! Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 234, fig. 27; 



N. A. Geol. Pal., 1889, p. 534, fig. 975. 



Tetradella chambers! Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1890, p. 112. 

 Ceratopsis chambers! Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 676, pi. 46, figs. 



19-22. Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, pi. 39, figs. 



13-16. Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 



1042, pi. 53, figs. 1, la. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 



352, fig. 1660a-c. Ruedemann (var.), Bull. New York State Mus., 162, 1912, 



p. 121, pi. 9, fig. 15. Bassler, Zittel-Eastman Textb. Pal., 1913, p. 738, fig. 



1425k. 



Black River and Trenton: Minneapolis, etc., Minnesota. 

 Eden: Cincinnati, Ohio, and vicinity; Albany County, New York (Indian 



Ladder). 

 Plesiotypes.Csit. No. 41506, U.S.N.M. 



CERATOPSIS CHAMBERSI ROBUSTA Cumings. See Ceratopsis robusta. 



Ceratopsis intermedia Ulrich. 



Ceratopsis intermedia Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 676. 

 Trenton: Covington, etc., Kentucky. 

 Cotypex.C-&t. No. 41500, U.S.N.M. 



Ceratopsis oculifera (Hall). 



Beyrichia oculifera Hall, 24th Rep. New York State Mus. Nat. Hist., 1872, p. 

 232, pi. 8, figs. 9, 10 (extract, 1871, p. 8, pi. 4, fig. 10). Miller, Cincinnati 

 Quart. Jour. Sci., 1, 1874, p. 118. Hall and Whitfield, Geol. Surv. Ohio, 

 Pal., 2, 1875, p. 103, pi. 4, figs. 9, 10. Jones, Quart. Jour. Geol. Soc. London, 

 46, 1890, p. 21, pi. 4, figs. 19a, b, 20. 



Tetradella oculifera Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1890, p. 113, 



fig.l- 



Ceratopsis oculifera Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 676. Ulrich and 

 Bassler, Proc. U. S. Nat. Mus., 35, 1908, pi. 39, figs. 19, 20. Cumings, 32d 

 Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 1044, pi. 53, figs. 3, 3a. 

 Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 352, fig. 1662. 



Maysville (Corryville) : Cincinnati, Ohio, and vicinity. 



Ceratopsis? quadriflda (Jones). 



Beyrichia quadrifida Jones, Geol. Surv. Canada, Cont. Micro-Pal., pt. 3, 1891, 



p. 66, pi. 11, figs. 9a, b. 

 Ceratopsis? quadrifida Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 308, 



pi. 39, figs. 21, 22. 

 Trenton: Lorette Falls, Quebec. 



Ceratopsis robusta (Ulrich). 



Beyrichia chambers! Hall and Whitfield, Geol. Surv. Ohio, Pal., 2, 1875, p. 104, 



pi. 4, figs. 11, 12. 

 Beyrichia chambers! var. robusta Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 677, 



fig. 50. 

 Ceratopsis chambersi var. robusta Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. 



Indiana, 1908, p. 1043, pi. 53, figs. 2, 2a. 

 Ceratopsis robueta Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 308, pi. 



39, figs. 17, 18. 

 Richmond: Waynesville, etc., Ohio; Richmond and Versailles, Indiana; near 



Spring Valley, Minnesota. 

 Holotype.Csit. No. 41335, U.S.N.M. 



