NATURAL SCIENCES OF PHILADELPHIA. 257 



May 18. 

 The President, Dr. Ruschenberger, in the chair. 

 Twenty-seven members present. 



On the Antelope-Deer of the Santa Fe 3Iarls. Prof. Cope 

 exhibited specimens of the dentition, horns, etc., of the ante- 

 lope-deer found by the paleontologist of the Wheeler survey of 

 New Mexico. He coincided with Prof. Gervais' view that the 

 oldest name for the genus is Dicrocerus, Lartet, of which the 

 D. dichotomus of the French Miocene is type. The American 

 species are D. necatus, Leidy (Merycodus, Leidy ; Cervus war- 

 renii, Leidy); D.furcatus, Leidy; (Antilope and Gosoryx, Leidy) ; 

 D. ramosus, Cope ; D. gemmifer, Cope (Merycodus, Cope) ; and D. 

 teres, Cope. The specimens proved that some specimens of a 

 species exhibit the horns continuous with the frontal bones, while 

 others of the same had been broken off and anchylosed, with the 

 production of a small burr. 



He added that the facies of the fauna of this horizon throughout 

 the west, including, as it does, Amphicyon, Dicrocerus, Hippotheri- 

 um, Aceratherium, 3Iastodon allied to M. angustidens, etc. etc., 

 more nearly resembles the upper Miocene of Europe than the 

 Pliocene of that continent. 



May 25. 

 The President, Dr. Ruschenberger, in the chair. 



Nineteen members present. 



Charles Sumner Williamson, Dr. John M. M'Grath, J. Warner 

 Edwards, F. Oden Horstman, William Williamson, M. B., Wm. 

 G. Piatt, Miss Mary Jeanes, and Miss Anna T. Jeanes were elected 

 members. 



Dr. John Belisario of Sydney, N. S. W., was elected a corre- 

 spondent. 



June 1. 



The President, Dr. Ruschenberger, in the chair. 



Twenty-one members present. 



A paper entitled " A Critical Review of the North American Sac- 

 comyidae," by Elliott Coues, U. S. A., was offered for publication. 



