[poi.] Mattke7v, Additional Observations on the Creodonta. 



genus, and by means of the information now available concerning 

 other Creodonts we are able to summarize the characters of 

 Viverravus as follows : 



Fig. I. \'i-i\->-i\t--:{s pT,>tciiUs Cnpc. I'r.igmentary skull and jaws, one-half 

 natural size. No. 2830, Wasatch Beds, Big Horn Basin, Wyoming. Amer. Mus. 

 Exp. 1896. 



I. — General Creodont Characters. — Skull very large in proportion to 

 skeleton, lirain very small and of low type, tail large (presumably long), neck 

 longer than in most modern Carnivora. Limbs rather short with large joints 

 and heavy muscular attachments. Feet small, spreading, scaphoid and lunar 

 separate. Fibula large, separate from tibia. Radius with oval proximal facet, 

 and trihedral simply concave undivided distal facet. Part of a presternal bone 

 preserved is like that of Phenacodus ivortniani. Humerus with prominent 

 deltoid crest reaching far down on the bone ; distal extremity broad, not deep, 

 with entepicondylar foramen. 



p*-mi 



2. — Family and Generic Characters.- 



carnassials. Lower car- 



nassial with high triangular trigonid shearing against posterior edge of p4 and 

 anterior edge of m^, which are extended externally into shearing blades. 

 Molars ^~^ tubercular, heel of m^ and all of m^ tubercular or becoming so, 

 premolars trenchant with 

 posterior cusps in front of 

 heel. Jaws long and slen- 

 der, incisors reduced and 

 canines approximated. Fe- 

 mur with second trochanter 

 interior instead of poster- 

 ior, third trochanter well 



developed on external side, v- 17- j. ^ x- • o r- ■ 1 . 



^ ' rig. 2. l^iverravus protetius, JSo. 2830. Cervical verte- 



one fourth the length from brse, from above. One-half natural size. 



the head of the bone. A 



clearly marked facet between fibula and calcaneum. Trochlea of astragalus very 



fiat, distal facet strongly convex from above downward, almost flat transversely, 



