212 



MERISTIC VARIATION. 



[part I. 



222. 



Increase in number of Premolars. 

 A. Wild Canid.e. 



C. dingo : specimen having two closely similar teeth between p 2 

 and the canine in each upper jaw 1 . Both the teeth had the form and 

 size of a premolar. This not a case of persistent milk-tooth, Nehring, 

 A., Sitzb. naturf. Fr. Berlin, 1882, p. 66. 



223. C. dingo : on right side p} is in place, and there is an alveolus for 

 second tooth of about same size. On left side P l is rather small. L. M. 



*224. C. lateralis, Gaboon. On 1. side p[ is single, but on rt. side 

 there are two almost identical teeth between I? and the canine : 

 of these the most anterior is level with, but slightly smaller than, 

 left £_. (Fig. 40) B. M., 1689, a. (See Mivart, P. Z. S., 1890, 

 p. 377.) 



Fig. 40. Canis lateralis, No. 224. View of canines and front premolars of the 

 upper jaw. p 1 of the left side is in symmetry with two teeth on the right side. 



225. C. vulpes : in 142 skulls, one case of two teeth between p 2 and 

 canine (sc. five premolars) in left upper jaw. Hensel, I. c, p. 548. 



In C. vulpes the root of p x is not rarely partly divided into two by 

 a groove of variable depth. The division is sometimes nearly com- 

 plete, as in C. S. M., 651. 



220. C. mesomelas : two teeth between p 2 and canine in left lower 

 jaw, anterior the larger. Donitz, Sitzb. naturf. Fr. Berl., 1869, p. 41. 



Division of P 2 

 227. C. viverrinus : left p^ represented by two teeth, each having one 

 root. Of these the anterior is tubercular, while the posterior is rather 

 long from before backwards. Anterior premolars normal. L. M. 

 (Compare Sledge-dog, No. 237.) 



Reduplication of p % . 



*228. C. mesomelas : inside right upper p 3 is a supernumerary tooth 

 which nearly resembles p s , but is a little smaller; lower jaw normal. 

 C. S. M., 643. (See Nos. 226 and 247.) 



229. C. lupus: in addition to irregularities in position of teeth, there is a doubtful 

 appearance as of an alveolus inside left P? which is displaced outwards. C. S. M., 024. 



1 Mivart, I.e., by mistake quotes tbis case as one of extra teeth above and below. 



I 



