Marsh Collection^ Peabody Museum. 359 



tinct ; the external cusps of the superior molars are apparently 

 less flattened and crescentic than those of M. elegans. 



In one specimen of an upper jaw, the second and third pre- 

 molars are preserved, although the tooth which I take to be 

 the second is not in place. The third is implanted by three 

 roots, two of which are external and one internal. The crown 

 is composed of a single large external and a smaller internal, 

 or lingual, cusp. The second is a two-rooted tooth, much 

 smaller than the preceding ; its crown is a simple, transversely 

 fl.attened cone, with a slight indication of a heel, and is very 

 much like the corresponding tooth in many of the modern 

 lemurs. ISfo other parts of the skeleton are known, but 1 here 

 call attention to an unassociated calcaneum, figure 115, which 

 is not only Primate, apparently, but is 

 about the right size for this or the pre- 

 ceding species and may possibly pertain 

 to one of them. The Primate characters /,^^ 



of the bone are seen in the short and 

 incurved tuber, as well as in the arrange- \|* 



ment of the facets, which are much like 

 those in Leimiv catta. The chief pecu- 

 liarity, however is in the elongation of ^^^^^^ ns.-Calca- 

 the part below the astragalar lacet, recall- nevimoiMicrosyopsftj; 

 ing at once the elongated calcaneum of dorsal view; twice nat- 

 some of the modern Madagascar species, ^^ai size a/, astragalar 



-r , . , I . , , n ,p , 1 , racet ; st, sustentaculum 



1 mention this matter tor the reason that tali. 

 there is no other known Primate in the 



Bridger to which, as regards size, it could pertain. If this 

 supposition is sustained, these animals are certainly Primates. 

 The measurements of the type of Bathrodon typus are as 

 follows : 



Length of second and third molars _ 8*25™'° 



Measurements of other specimens : 



From base of last molar to base of incisor 22*00°^™ 



Length of first and second molars 9*00 



Length of fourth premolar and first and second molars 12-50 



Depth of jaw at posterior border of symphysis 9*00 



Depth of jaw at anterior border of third molar _ 10*00 



Length of upper molars _ 11 -00 



Length of upper molars and fourth premolar 15-00 



Length of third and fourth premolars and molars 18*00 



The type of Bathrodon typus was found by Mr. F. Meade, Jr., 

 at Grizzly Buttes ; other specimens were obtained at Church 

 Buttes and Millersville. I secured specimens on Cottonwood 

 Creek and at Church Buttes. The calcaneum was found on 

 Dry Creek. 



