NORTH AMERICAN PALAEONTOLOGY. 239 



Cope, E. D. The loug-spincd Theromorplia of tbo Peruiiau Epoch. 

 (Amer. Nat., vol. xx, pp. 544, 545, June, J88G. Philadelphia.) 



Discusses some of the characters of Z)Jwie/ro(?oH incis'u'iis, D. clavigcr, Xaosaurus 

 crucigcr, N. microdiis, and N. clavigcr ; all from the Perniiau formation of 

 Texas, aud says that figures of X. clavigcr will be published in the Trans- 

 actions of the American Philosophical Society. 



Cope, E. D. The Phylogeny of the Camelida. (Amer. ISTat., vol, xx, 

 pp. G11-G24, ligs.1-14. July, ISSG. Philadelphia.) 



The total number of genera is niue, of species twenty-sis. The development 

 of the camels in North America presents a remarkable parallel to that of 

 the horses. The ancestors of both lines appear together in the Wasatch or 

 lowest Eocene, and the successive forms develop side by side in all the suc- 

 ceeding formations. Camels and horses are standard types in all our Ter- 

 tiary formations; and they must bo learned by any one who wishes to dis- 

 tinguish readily the horizons one from the other. The horse forms are 

 more numerous in all the beds in individuals as vrell as in species. 



Cope, E. D. — Schlosser on the Phylogeuy of the Ungulate Mammalia, 

 Beitriige zur Keuntuiss der Stammesgeschichte der Ilufthiere uud 

 Versuch eiuer Systematik der Paar-uud Uupaarhufer, von Max 

 Schlosser. Morphologisches Jahrbuch, Leipzig, 188G. (Amer, Nat , 

 vol. XX, pp. 719-721. August, 188G. Philadelphia.) 

 Review of. 



CcPE, E. D, Schlosser on Credouta and Phenacodus. Ueber das Yer- 

 liiiltniss der Cope'scheu Credouta zu den iibrigen Fleisclifresseru. 

 Morphologisches Jahrbuch, ISSG, p. 287, von Dr. Max Schlosser. 

 (Amer. Nat., vol. xx, pp. 9G5-967. November, 188G. Philadelphia.) 



Review and criticism of. 



Cope, E, D. An interesting connecting Genus of Chordata, (Amer. 

 Nat,, vol. XX, pp, 1027-1031, fig. 1, December, 188G. Philadelphia.) 



Describes the new genus and species Mgcicrops ordinauts from the Carboniferous 

 of Pittston, Pennsylvania. 



Cope, E. D. A giant Armadillo from the jMioceue of Kansas. (Amer. 

 Nat,, vol. XX, pp. 1044-104G, December. 1S8G, Philadelphia.) 



Describes the new genus and species Caryoderma cnoviamim fiom the Loup 

 Fork bed of Kansas. 



Cope, E. D. Letters referring to the completion of the final report of 

 the United States Geological Survey of the Territories, pp. 1-7. 

 January, 1887. Washingtou. 



Publishes various letters showing the importance of finishing his work on the 

 fossil Vertebrata of the West, 



Cope, E, D. On the Interceutruui of the Terrestrial Vertebrata. Eead 

 before the American Philosophical Society, January, 188G. (Trans. 

 Amer. Philos. See, Phila,, vol, xvi, 2d ser., pp. 243-253, figs. 1-G, pi. 

 i, 188G. Philadelphia.) 



That the intercentrum exists is shown by the very frequent occurrence ia the 

 Polycosanrian reptiles of the Permian epoch of a wedge-shaped bone be- 



