58 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



VIVERRAVUS LUTOSUS Gazin 



(Plate 7, figures 5 and 7) 



Fragments of three jaws and a maxilla, each with a single tooth, 

 have been added to the materials representing Viverravus lutosus in 

 the La Barge fauna. The species is now also represented by a lower 

 jaw (U.S.N.M. No. 22464) with M2 and the talonid portion of Mi 

 from the New Fork tongue (pi. 7, fig. 7). The preserved part of 

 Ml agrees very closely with this tooth in the type but M2 is perhaps 

 a trifle smaller than in certain referred specimens from the Muddy 

 Creek locality north of Big Piney. It is also noted that the Cathedral 

 Blufifs lower jaw (P.U. No. 16107) that Morris (1954) referred to 

 Viverravus gracilis is much closer to V. lutosus. Both P4 and Mi in 

 the Princeton specimen have the same overall dimensions as these 

 teeth in the type of V. lutosus and seem identical to them, but the 

 alveolus for P3 appears to be slightly longer. Matthew's (1909, 

 p. 361) measurements of the type of Bridger V. gracilis suggest that 

 the lower carnassial was relatively much broader than in the Cathedral 

 Bluffs jaw. 



VIVERRAUS, cf. DAWKINSIANUS (Cope) 



A second and larger species than Viverravus lutosus in the New 

 Fork fauna is indicated by portions of a lower jaw with only M2 

 preserved (U.S.N.M, No. 22467). The tooth is undoubtedly viverravid 

 but its size and that of the more forward alveoli is decidedly greater 

 than in V. lutosus. In this respect it is near V. dawkinsianus, to 

 which it may be referred. However, it differs from that species, so 

 far as can be determined, only in the depth of the lower jaw. The jaw 

 is a little more robust than in V. lutosus but is not as deep as in 

 typical Lost (Tabin V. dawkinsianus. 



UINTACYON ASODES Gazin 



(Plate 7, figures 6 and 8) 



While no new materials of Uintacyon asodes have been found in 

 the La Barge horizon, a comparatively robust jaw that may be referred 

 to this species was found in the New Fork tongue. The specimen 

 (U.S.N.M. No. 22468; pi. 7, fig. 6) includes P2 and P4 to M2 

 inclusive. The carnassial is a little wider, but P2 is more reduced, as 

 may be inferred from the better spacing of the roots of this tooth in 

 the type. The large size of the molars that characterizes U. asodes 

 in comparison with Uintacyon massetericus is further demonstrated 



