MAMMALIA. 



PRIMATES. 

 TOMITHERIUM, Cope. 



Ann. Rep. U. S. Geol. Survey of Terrs. 1872, p. 546. 



" Dental formula of the inferior series : I. 2, C. 2, Pm. 4, 

 M. 3. The last molar has an expanded heel. The third pre- 

 molar consists of a cone with posterior heel. Fourth premo- 

 lar exhibits, besides its principal cone, an interior lateral one 

 and a large heel. The true molars support two anterior 

 tubercles, of which the inner is represented by two distinct 

 cusps in one or more of them, and the external is crescentoid 

 in section. The posterior part of the crown is wide and con- 

 cave, and bordered at its posterior angles by an obsolete 

 tubercle on the inner, and an elevated angle on the outer 

 side." (Palaeontology, Wheeler's Survey, iv (pt. 2), p. 135.) 



TOMITHERIUM ROSTRATUM, Cope. 

 Loc. cit., p. 54S. 



This species exhibits considerable variation, both in size 

 and proportion of the teeth. We have two specimens of it, 

 one of which agrees exactly with the measurements given 

 by Professor Cope, while the other is stouter, and probably 

 belonged to an old male. 



The incisors are too much broken for description. The 

 canine has a long, stout fang, which is subcircular in section ; 



