Article XXI.— NEW CANID^ FROM THE MIOCENE 

 OF COLORADO. 



By W. D. Matthew, 



Cynarctus, new genus. 



Family Canidce, Subfamily AmphicyonincB . 



Dentition 3.1.4.3. Camassials reduced and molars enlarged, talonids 

 bicuspid in the type species, and two accessory cusps on the trigonids. 

 Jaw long and slender as in the dogs, premolars cynoid. 



Cynarctus saxatilis, n. sp. 



Size of the Coyote. Jaw somewhat more slender anteriorly, in- 

 ferior border more convex, angular process longer, cur\ang more up- 

 ward and inward. Coronoid process more triangular, the tip narrow. 



Fig. I. Cynarctus saxatilis. Lower jaw, outer side, x §, and inside view of teeth. 

 Type, No. 9453. Loup Fork (Pawnee Creek Beds), Colorado. 



the anterior border with slight uniform backward curvation, while in 

 the coyote it is straight tmtil near the tip and then curves suddenly 

 backward. Masseteric fossa deeper and wider, its inferior border 

 much more marked. 



Teeth. Incisors not preserved. Canine and premolars little worn, 

 molars much worn. Premolars somewhat smaller than in C. latrans, 

 camassial nearly one-fourth smaller, molars over one-fourth larger. 



The trigonid of the camassial is low, and reduced in size, and two 



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