the Marsh Collection, etc. 433 



Measurements. 



mm. 



Length of lower molar-premolar series 53 



Length of lower premolar series 29 



Breadth of skull at M 1 52.5 



Cynodesmus cuspidatus, sp. nov. 



(Figs. 4-5.) 



Holotype, Cat. No. 1278.8, Y. P. M. Upper Miocene (Valentine beds), 

 Niobrara Eiver below Eapid (now Minnechaduza) Creek, Nebraska. 



The holotype consists of parts of both maxillsB with 

 molars, P 3 and P 4 , the other premolars being represented 

 by parts of the crowns or alveoli. A fragment of a jaw 

 without teeth is provisionally referred to this species. 

 These specimens were collected by 0. Harger in 1873. 



Fig. 4. 



12738 TYPE 

 Y. P. M. 



Fig. 4. — Cynodesmus cuspidatus, sp. nov. Holotype. Nat. size. Palatal 



view. 



The species is intermediate in size between C. thooides 

 Scott and C. thomsoni Matthew, more closely resembling 

 the former in size and the latter in dental characters, 

 while the convexity above the anterior root of P 4 is very 

 much more prominent than in either of the described 



