279 



Proceedings of tho Academy of Natural Sciences, Philadelphia, 1850, 257; Report of the 

 United States .Geological Survey of tho Territories, I, IS?:?, 289, Table XVH, fig. 20. 



Enchodus shumardii, Leidy 



Proceedings of tho . 

 United States 



Sage Creek, Dakota 



EMPO, Cope. 



Proceedings of the Amcricau Philosophical Society, 1872, p. 'M7.-~CivwlicliHtys, Cope, /. c, p. 348 (attributed 



to Leidy, but cot his genus). 



Empo NEP^BOLICA, Cope. Plates XLIX, fig. 9; L,fig. 8; LIT, fig. 1; LI II, figs. 3-5. 



Proceedings of the Ameiicau Philosophical Society, 1872, p. 347. — Empo sulcata, Cope, Hay- 

 den's Bulletin of the United States Geological Survey, No. 2, p. 40.— CimolicMhys sul- 

 catus, Cope; 1. a, p. 351. 



Niobrara epoch of the Smoky Hill, and of Rooks County, Kansas. 

 Empo semiancf.ps, Cope. Plate LIII, figs. 1, 2, aud 6-9. 



Cimolichtliys semianu'ps, Cope, 1. c, p. 351. 



Niobrara epoch of the Smoky Hill region, and of Trego and Rooks 

 Counties, Kansas. 



Empo contracta, Cope. Plate LIII, figs. 14-17. 



Hayden's Bulletin of the United States Geological Survey of the Territories, No. 2, 1874, p. 40. 



Niobrara Cretaceous of Kansas. 

 Empo merrillii, Cope. Plate LIII, figs. 10-13. 



Ibid., p. 46. 



Niobrara Cretaceous of Kansas. 



STEATODUS, Cope. 



Proceedings of the American Philosophical Society, 1872, p. 348. 



Stratodus apicalis, Cope. Plate XLIX, figs. C-S. 



L. c, p. 349. 



Niobrara epoch of the Smoky Hill River. 



APSOPELIX, Cope. 



Hayden's Annual Report, 1870, p. 423. 



Apsopelix sauriformis, Cope. Plate XLII, fig. 4. 



L. c, 1870, 424. 



Benton epoch at Bunker Hill, Kansas. 



