Cope.] &V [Feb. 7, 1873. 



is present fore and aft, it is wanting internally and externally. The 

 anterior median tubercle is present on all the true molars, and the bases of 

 the acute inner cones are in contact. The sagittal crest is truncate, and 

 the squamosal portion of the zygoma very stout. The nasal bones are 

 together very convex in transverse section. 



M. 



Length of true molar series (2.75 in.) 0.067 



" last " 025 



Width " " 026 



Length of penultimate molar 026 



" " " 026 



Depth squamosal process 025 



Found by the writer on a bluff on Green River, near the mouth of the 

 Big Sandy, Wyoming. 



I have just received a paper " On the Gigantic Fossil Mammals of the 

 Order Dinocerata, by Prof. O. C. Marsh," which contains a formidable 

 catalogue of errors which the author appeai-s to suppose I have com- 

 mitted in describing animals of this type. All this is explained by the 

 fact that Prof. Marsh has never seen the genus Eohasileva Cope, and er- 

 roneously supposes it to resemble Uintatherium Leidy (Dinoceras 

 Marsh). The descriptions which I have given are correct, as will pres- 

 ently appear, as well as the fact that I have anticipated the Professor in 

 the descriptions of some of the allied species. 



Stated Meeting, February 21st, 1873. 



Present, 14 members. 



Vice-President, Prof. Cresson, in the Chair. 



Letters of acknowledgment were received from the X. 11. 

 Union at Bonn, Aug. 6th (84, 85, 86) ; Bureau des Longi- 

 tudes, Jan. 7th (89, XIV, iii); the Historical Societies of 

 Maine, New Jersey, Maryland and Georgia (89) ; the Essex 

 Institute, Feb. 14th (89); Lyceum K II. N., York, Feb. 

 10th (89). 



A letter of envoy was received from the Census Office, 

 Feb. 11th, 1873. 



A letter from Mr. A. Van Name, Lib. Yale College, was 

 read, requesting deficiencies to be supplied. 



Donations for the Library were received from the R. 

 Prussian and Belgian Academies, Netherland Botanical 



