214 THE WASATCH AND BRIDGER FAUNiE. 



distinguishes it, and adds some important characters which are strongly 

 marked in the genus Adapts. He tinds the cranium to be strongly con- 

 tracted just behind the orbits and at the pterygoid plates, in a manner 

 unknown to existing Lemuridce. 



Subsequent to the above dates the number of known species of these 

 puzzling Eocene Mammalia has been increasing, and the Wheeler expedition 

 of 1874 added a number of genera and species to those previously known. 

 An illustrated account of these was published in the final report of that 

 organization, Vol. IV. 



I have seen no reason to modify the view originally expressed as to 

 the Quadrumanous affinities of Anaptomorphus ; on the contrary they have 

 been placed beyond doubt by the discovery of the entire cranium by M. 

 Filhol, of his genus Necrolemur above mentioned, which is very similar to 

 Anaptomorphus, in the parts of both which are known, the mandible and 

 its dentition. Additional light was thrown on the structure of Tomitherium 

 by my researches in New IMexico, conducted in 1874. The fragments of 

 the skeletons of two species of a closely allied genus, Peli/codits, were 

 found, which include numerous bones of the tarsus, and these are identical 

 with corresponding parts in the Creodonta and different from those of the 

 Lemuridce. The astragalus extends anterior to the shortened calcaneum, 

 and the navicular is short and the cuboid not elongate. The superior aspect 

 of the astragalus presents two oblique surfaces, one for the internal malleolus, 

 the other for the transverse facet of the tibia. The portions of femur, 

 including the third trochanter, the proximal part of the ulna, and the distal 

 portion of the humerus, are nil closely similar to those of the Creodonta. 

 The type specimen of Tomitherium includes some parts of the skeleton not 

 present in the New Mexican species. Thus the ilium of T. rostratum, while 

 furnished with the prominent anterior inferior spine of the Creodonta, is flat- 

 tened toward the crest, and is not angnlate on the external face. The femur 

 is furnished with a very elevated third trochanter, which is opposite to the 

 little trochanter, as in Chirnmi/s and Talpa, and not low down, as in Creo- 

 donta. The head of the radius is rounder than in Creodonta. The skeleton 

 of Tomitherium, in fact, bears a strong resemblance to that of ChiromySy 

 leaving the skull out of view. 



