CANID^. 895 



with several teeth of both jaws. They indicate a canine animal of about 

 the size of the Temnocyon wallovianns ; that is, with a skull intermediate in 

 dimensions between those of the wolf and coyote. 



The superior sectorial tooth is as long as that of the Temnocyon altige- 

 nis, but not so thick, and with narrower blade. The anterior base of the 

 crown is concavely emarginate. The second tubercular is more like the 

 first of Temnocyon corypJiceus than that of T. aUigenis, but may be readily 

 distinguished by the insignificance of the two external tubercles. The 

 crown is not excavated, and it is travei'sed across the middle by a regularly 

 curved low ridge, which represents the V-shaped crest of most modern dogs. 

 The internal cingulum is wide and regularly convex. The external cingu- 

 lum is prominent forwards and outwards, as in T. coryphceus, but is obsolete 

 at the base of the second external tubercle. 



The crowns of the third and fourth inferior premolars are preserved in 

 a somewhat damaged state. The fourth has a posterior lobe of the border. 

 The sectorial has lost its anterior cusp. It is rather small, and the internal 

 tubercle is well developed, though not so high as in Amphicyon cuspigerus. 

 The keel of the heel is not much elevated and is external to the middle line. 

 There is a low inner basal cingulum, readily worn away. The first tuber- 

 cular is a large tooth, nearly equal to that of T. altigenis, and therefore rel- 

 atively much exceeding that of A. hartshornianus and of T coryphceus. It 

 has two opposite tubercles in front of the luiddle, and one external to the 

 middle posteriorly, and no external cingulum. The alveolus of the second 

 tubercular shows that it also was a large tooth. 



Measurements. 



M. 

 Diameter of crown of superior cauine Oil 



Diameters of superior sectorial } "'^ *''°P°^ ^"*" ' 



( transverse m trout 009 



Diameters of second superior tubercular 5 P V'" 



C transverse at middle 007 



Length of inferior Pm. iii iv on base 022 



Length of heel of sectorial 00.5 



Diameters of first inferior tubercular^ anteroposterior 0006 



C transverse 0066 



Length of alveolus of second tubercular 004 



The specimen above described agrees very nearly with the larger of 

 those described by Leidy, and represented by his Plate I, figs. 1-2, of the 



