Oligocene (White River) Felidce. 211 



closely allied to D. paucidens Riggs, and corresponds to 

 the measurements and form of the same molar in the type 

 specimen of this species. It was found near Pine Bluffs, 

 Colorado, by E. Devendorf in 1874. 



A skull and right mandible, No. 10048 Y. P. M., are 

 identified with B. squalidens (Cope) and were found at 

 White River, Nebraska. Another specimen, No. 12116 

 Y. P. M., is provisionally identified with this species. It 

 consists of a very poorly preserved skull and both 

 mandibles, with teeth well preserved. Its nearest ally 

 is D. squalidens, although, while a young individual, it 

 is much, smaller and may represent a new species. In 

 view of the obliteration of nearly all skull characters 

 except length, however, it is referred to D. squalidens, 

 pending the finding of additional material. 



Hoplophoneus primcevus (Leidy). 

 Cat. No. 10051, Y. P. M., White River (Oligocene), Casey, South Dakota. 



This specimen, collected by H. C. Clifford in 1891, is 

 slightly smaller in nearly all dimensions than the type, 

 and as the bones are thin and the mandibles long and 

 slim, it is reasonable to suppose that it may represent 

 a female, but from the material at hand it is impossible 

 to make any positive statements in regard to sex differ- 

 ences. 



An interesting feature in the specimen is the lack of a 

 coronoid process on the right ramus. The base of the 

 ascending ramus, above the masseteric fossa, is about 

 2 mm. thicker than on the left ramus, and, instead of 

 a coronoid, there is a lateral osseous growth of over 

 4 mm., to which was probably attached a part of the 

 masseter muscle. The right condyle is also a little 

 smaller than the left. The animal undoubtedly lived a 

 considerable length of time without the coronoid, the 

 lack of which apparently had no special influence on its 

 life habits, even though it seems to indicate either a 

 pathologic or a traumatic condition. 



Hoplophoneus mar ski, sp. nov. 



(Figs. 1 A and B.) 



Holotype, Cat. No. 10049, Y. P. M., White River (Oligocene), Nebraska. 



The type of this species, collected by H. C. Clifford 

 and A. S. Shelley, consists of a skull only. It is that of 

 a submature animal, and while some fracturing has oc- 



