2 24 Bulletin American Museum of Natural History, [Vol. XIX, 



Leptomeryx mammifer Cope. 



A much larger species than the preceding, size about that 

 of Poebrotherium eximium. Distinguished from L. evansi by 

 the pattern of pj, which is like that of L. esiilcatus, but with 



m.2 



Fig. i6. Leptomeryx maininifer. Lower jaw, natural size, external view. No. 

 9684, pz and/4 supplied from No. 9686. 



the external ridge of the protoconid more clearly separate 

 from the heel, and the postero-internal more clearly joined to 

 it. The first lower incisor is large, second and third small, 

 canine nearly as large as first incisor (larger than in L. evansi). 

 First premolar equally spaced between 

 c and P2; remaining premolars close 

 set. Molars an enlarged copy of those 



Fig. 17. Leptomeryx mammi- of L. evajisl. PartS of thc fcCt of 

 _/er. Crown view of lower pre- 



molars, natural size. No. 9687 ; Leptomeryccs of appropriate size were 



pt. from No. 9689. -^ -^ f c f , 



found at the locality; they show 

 no important distinctions either in fore or hind foot, from 

 L. evansi. The upper molars have a smaller median internal 

 cusp than those of L. evansi. The size is nearly a third 

 larger, lineally. 



Lower premolars, p^.^ 24 mm. 



" first premolar, pi 2 



Space between c and p 17 



Lower molars, m,_3 32 



Complete lower dentition, estimated 78 



Upper molar, longitudinal g 



" transverse 11 



CAMELID.^. 



Leptotragulus profectus, spec, no v. 



Parts of several lower jaws represent a species of Camelid 

 nearly as large as Poebrotherium ivilsoni, but with brachyo- 



