Marsh Collection^ Peabody Museum. 



19 



third ; the heels of the molars are large and basin-shaped, that 

 of the last being smaller than the other two ; the shear is 

 rather transverse, and the internal cnsp is less reduced than in 

 S. gracilis ; the jaw is much more massive and deeper, and 

 the distance from the posterior base of the canine to the third 

 premolar is proportionally shorter than in the other sj)ecies. 

 This indicates a rather short-mnzzled type. The specimens 



98 



Figure 98. — Eight lower jaw of SinojKi major Wortmau : side ^"iew ; nat- 

 nral size. (Type.) 



Figure 99. — Left lower jaw of Sinojm major Wortman : side view ; three- 

 fourths natural size : restored from three specimens. 



suggest an animal intermediate in size between a red fox and a 

 prairie Avolf. 



The principal measurements are : 



Length of inferior dental series from posterior base of canine 70"°^°^ 



Length of premolars _ 44* 



Length of molars 26* 



Antero-posterior diameter of first molar . _ _ _ _ 8* 



Antero-posterior diameter of second molar _ 10' 



Antero-posterior diameter of thh'd molar ._ 9- 



Depth of jaw at second molar 20* 



Depth of jaw at second premolar.. 16* 



The type specimen was found by Sam Smith at Church 

 Buttes. 



