PEOM THE SIvXlIK HILLS. 135 



(2) The rami of the lower jaw are not so much compressed as in 

 the living species of the Canidae. 



(3) Each ramus, instead of being straight, forms an arc of a circle 

 between the angle and the mandibular symphysis. 



(4) As in the upper jaw, the premolars in the lower jaw also are 

 closer together than in the Fox. 



(5) The internal tubercle of the sectorial is stouter than in the 

 Fox. 



(6) The upper tuberculars, especially the hindermost one, are pro- 

 portionately larger. 



Messrs. Baker and Durand noticed a peculiarity about the frontal 

 ridges, that these, starting from the rear of the postorbital apophyses, 

 " converge towards the occiput in a curvilinear direction, until the 

 distance between them is reduced to about half an inch, after which 

 they run nearly parallel for some distance, and then converge again, 

 till they unite near the occiput and become blended with the parietal 

 crest." I find this peculiarity, which is absent in the European 

 Fox, well marked in both the specimens of the Bengal Fox* (Canis 

 hengdlensis) I have had for comparison, as well as in the Fennecsf. 



Canis, sp. ? (PI. YI. figs. 7-9.) 



One of the two posterior parts of lower jaw + on which this 

 species is founded was labelled by Dr. Falconer as " Enhydriodon ;" 

 and in a memorandum, published in the ' Palseontological Memoirs ' §, 

 he gives the measurements of the teeth and compares them with 

 those of the Otter. The carnassial and the tubercular following 

 it are in situ ; but behind the latter there is a distinct alveolus for 

 a small molar, which must have escaped the attention of Dr. Falconer. 

 This tooth is in situ, though partially damaged, in the other frag- 

 ment, which is exactly similar to the one supposed by Dr. Falconer 

 to belong to his Enhydriodon. The specimens (| indicate an animal 

 of the size of the Wolf ; and the form of the teeth is exactly as in 

 that animal. On comparing the two fragments with the lower jaw 

 of the living Indian WoK ^ from the osteological collection of the 

 British Museum, the rami are found to be higher and thicker and 

 the teeth proportionately smaller in the fossil. These difierencea 

 are exhibited by the following measurements : — 



Living 

 Canis sp. ? Indian Wolf, 

 inch. inch. 



Ant.-post. length of the carnassial 0-95 1 



„ molar 2 0-425 0-475 



Height of ramus below carnassial 1-1 1*025 



Thickness of jaw 0*5 0*4 



These differences may be only varietal ; but it is highly probable 

 that further evidence will establish the distinctness of the present 

 form ; in which case I propose to call it C. Cautleyi. 



* B. M. nos. 174 h and 174 h. t B. M. nos. 1S2 c and 815 a. 



X B. M. nos. 40181 and 40182, § Vol. i. p. 337. 



II These have been labelled as " Canis " by Mr. Davies. 



•jf •' Lujaus pallipes " in Gray's Catalogue. No. 164 g. 



