Cope.] ' ^ [July 16, 



emies at Buda Pest, Copenhagen, Berlin, Rome, Brusselles, 

 and Philadelphia; Editor of the Zoologischer Anzeiger, 

 Leipsig; Soeiete VaudoiBe, Lausanne ; Cav. Damiano Muoni, 

 Milan; Editor of the Revue Politique, Paris; Society of 

 Commercial Geography, Bordeaux ; Editor of the Revista 

 Euskara, Pamplona ; Royal Astronomical Society, Dr. C. 

 William Siemens, and the Editors of the Chemists' Journal, 

 and Nature, London ; American Journal, and Yale College, 

 New Haven; Metropolitan Museum, N". Y. ; Pennsylvania 

 Historical Society, Franklin Institute, Journal of Pharmacy, 

 and Medical News, and Mr. Lorin Blodget, Philadelphia ; 

 Mr. P. W. Shaefer, Pottsville ; U. S. National Museum, 

 Smithsonian Institution, and Department of the Interior, 

 Washington, D. C. ; American Philological Association ; Dr. 

 Robert Peter, Frankfort, Ky. ; Editor of the Revista Cien- 

 tilica Mexicana, and the Ministerio de Fomento, Mexico. 



Prof. E. D. Cope presented a paper "On the genera of the 

 Creodonta." 



On account of the small attendance the election of mem- 

 bers was postponed until the next stated meeting. 



Pending nominations Nos. 904, 909 to 915, 917 to 919, 

 and new nomination No. 920, were read. 



And the meeting was adjourned. 



On the Genera of ike Creodonta. By E. D. Cope. . 



{Read before the American Philosophical Society, July IG, 1880.) 



For the characters of this group of the unguiculate mammalia, the reader 

 is referred to the fourth volume of the final Report of the U. S. Geol. 

 Survey W. of the 100th Mer., under Capt. AVheeler Pt. ii, p. 73. 



History. MM. Laurillard, Pomel and others have referred the European 

 Creodonta to the Marsupialia, on account of the great similarity of the den- 

 tition. MM. De Blainville and Gervais have, on the other hand, re- 

 garded them as placental, a view which I have assigned reasons* for be- 

 lieving to be the correct one. M. Filhol has recently shown that the re- 

 placement of the dentition in Hycenodon, which has some affinities with 



* Proceedings Academy, Phila., 1875. Paleontological BuUetin No. 20, Dec, 

 1875. 



