1899] Matthew, Fresh- Water Tertiary of the West. 35 



IV. Wind River. — Continued. 



rt.S 



^^ 



RODENTIA. 



ISCHYROMYID^. 



Paramys delicatior Leidy 



" delicatissimus Leidy 



CREODONTA. 



VIVERRID.E. 



Viverravus ' (Didymictis) altidens (Cope). 



Vivarravus ( Didymictis) /;'f/f««j' (Cope) . . . 



" (Limnocyon) riparitis (Marsh) . 



? Didymictis leptomylus Cope, type only 

 Viverravus gracilis Marsh 



Didymictis dawkinsianus Cope 



Uintacyon (Miacis) canavus (Cope) 



" " brevirostris (Cope). . 



Uintacyon (Miacis) cf. vorax Leidy . 



Uintacyon sp. minima 



PROVIVERRID.-E. 



Sinopa (Stypolophus) ■whitiae (Cope) 



Sinopa, cf. viverrina (Cope) "^ . . . . 



OXY^NID.li. 



Oxycena hiierfanensis Osborn 



Patriofelis tigninis (Cope) 



INSECTIVORA. 



LEPTICTID^. 



Pahcictops ■* bicuspis (Cope) 



" didelphoides (Cope) '' 



CHIROPTERA. 



Vesper ugo anentophiliis Cope 



? Chiropter indet 



So 



A. M. 



A. M. 

 A. M. 



A. M. 



A. M. 



A. M. 



A. M. 



' ViverraTus Marsh antedates Didymictis Cope, and refers to the same genus. The generic 

 description appears to the writer to be a sufficient one, ahhough Marsh in this as in other de- 

 scriptions uses the term " tubercular " to describe a tuberculo-sectorial tooth. 



- Apparently a different species from the Big Horn specimens referred to 5'. viverrina. I 

 have not compared either with the type, from New Mexico. 



^ Referred liy Cope to Ictops. an Oligocene genus closely allied to Leptictis Leidy. Though 

 not distinguishable by the dentition from Ictops^ there are important and very constant differ- 

 ences in the skull characters, among which I select for generic definition the backward ex- 

 tension and broadening of the posterior ends of the nasal bones, and the presence of a single 

 median crest on the cranium instead of the two parallel crests of Ictops and Leptictis. 



* Pertinence of this species to the genus very doubtful. ^ Type lost. 



