NORTH AMERICAN PALAEONTOLOGY. 239 



Cope, E. D. The loug-spincd TUeromorpha of the Periniau Epoch. 

 (Ainer. Xat., vol. xx, pj). 541, 545, June, 183G. Phihidelphia.) 



Discusses some of the eharat'tcr3 oi Dimetrodon incislrus, I). cJainger, Xaosaui-us 

 crucifjer, N. microdiis, and X. claviger ; all from the Permian formation of 

 Texas, aoil says that tigures of iY. clavujcr will be published in the Trans- 

 actions of the American Philosophical Society. 



Cope, E. D. The Phjlogeny of the Camelida. (Amer. Xat., vol. xx, 

 pp. Gll-624, figs.l-U. July, 1S8G. Philadelphia.) 



The total number of genera is nine, of species twenty-six. 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 bj^ 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 Awy 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 well as in species. 



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

 Beitriige zur Keuutuiss der Stammesgeschiclite der Hufthiere uud 

 Versuch eiuer Systematik der Paar-und Unpaarlmfer, von Max 

 Schlosser. MorphOlogisches Jahrbuch, Leipzig-, 18SG. (Amer. Nat., 

 vol. XX, pp. 719-721. August, 1S8G. Philadelphia.) 

 Review of. 



Cope, E. D. Schlosser on Credouta and Pheuacodus. Ueber das Yer- 

 hiiltniss der Cope'sclien Credonta zu den iibrigen Fleischfresseru. 

 IMorphologisches Jahrbuch, 188G, p. 287, von Dr. Max Schlosser. 

 (Amer. ISTat., vol. xx, pp. 9G5-967. November, IS8G. 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 Mtjcterops ordwams from the Carboniferous 

 of Pittston, Peuusyivauia. 



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

 Nat., vol. XX, pp. 1041-1046, December. 188G. Philadelphia.) 



Describes the new genus and species Caryodennn stioviavum from the Loup 

 Fork bed of Karv^as. 



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. Washington. 



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

 fossil Vertebrata of the "West. 



Cope, E. D. On the Intercentrum of the Terrestrial Vertebrata. Head 

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

 Amer. Philos. Soc, Phila., vol. xvi, 2d ser., pp. 243-253, figs. 1-6, pi. 

 i, 188G. Philadelphia.) 



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

 Polycosauriau reptiles of the Permiau epoch of a wedge-shaped boue be- 



