CHAP. IX.] 



TEETH : CANID^E. 



213 



Partially bifid premolar. 



230. ^* vu lP es • right v\ has three roots and a partially double crown 

 with two cusps (Fig. 41). The whole crown is pyramidal, the labial 

 face being parallel to the arcade and the three roots stand each at one 

 angle of the base : left pj normal; lower jaw missing. B. M., 175, o. 



Jh 



Iji 



l [ 



Fig. 41. Teeth of Fox (C. vulpes) described in No. 230. The separate view- 

 shews the right first premolar removed, seen from the labial side. 



Extra premolar in lower jaw. 



231. C. lupus : two teeth between p 2 and canine in lower jaw on right 

 side, one case: and the same on left side also, one case. These two 

 occurred in 27 Wolf skulls seen by Hexsel, Morph. Jahrb., 1879, v. 

 p. 548. 



B. Domestic Dogs. 



*232. Dog : between F 2 and canine on rt. side there are two teeth, 

 each shaped like a normal £\ the anterior being somewhat the 

 larger. This seen in two cases, figured in Fig. 42, II. and III. 



right 



m 



Fig. 42. Profiles of canines and anterior premolars in three dogs having two 

 teeth on one side in symmetry with one tooth on the other. 



I. C. S. M., 570. II. and III. Skulls in Cambridge Univ. Morph. Lab. 



Lower jaws absent. The property of the Zool. Lab., Cambridge 

 (cp. G. lateralis, No. 224). 

 233. Spaniel : similar case, left side, Fig. 42, I. C. S. M,, 570. 



