146 CATALOGUE. 



incisors are the same ; the grinders, above and below, are disposed in a 

 regular compact series, so close as to be distinguished or separated 

 from each other with difficulty, having individually slightly- elevated 

 ridges or folds. In the upper jaw the anterior grinders respectively 

 are somewhat larger than the rest in the series, and according to 

 Mr. Gray's comparison with Arvicola, they are provided with an 

 additional ridge or fold. In the lower jaw the series is nearly uniform, 

 with a slight decrease posteriorly. 



A more detailed account will be given by Mr. Hodgson, who dis- 

 covered this genus in Upper India. 



175. NEODON SIKIMENSIS, Hodgson, Ann. and Mag. 

 Nat. Hist. Sec. Ser. Vol. 1 1 I. p. 203. 



Fur, very soft and silky, constituting an uniform external pelage ; 

 above, deep brownish black, with a slight rusty shade, minutely and 

 copiously grizzled with hairs of a deep ferruginous tint ; this colour 

 extends over the top and sides of the head, body, tail, and the upper 

 portion of the extremities; the chin, breast, and abdomen are deep 

 bluish gray, with a slight ferruginous shade. The ears are of moderate 

 size, and hairy externally. The habit and proportions resemble 

 Arvicola, but the tail is comparatively short. Length from the snout 

 to the root of the tail, 5 inches ; of the tail, 1 J inch. 



HAS. Sikim, Hodgson. 



A. Presented by B. H. Hodgson, Esq. 



Fam. 2. HYSTRICID^B, Gray, Cat. Mamm. 

 Br. Mus. Syst. List, XXIV. 



a. HYSTRICINA. 

 Genus HYSTRIX, Linn, et al. 



176. HYSTRIX LEUCURUS, Sykes, Proceed. Zool Soc. 

 1831, p. 103. 



SAYAL, of the Mahrattas, Col. Sykes. 

 HAB. Dukhun, Colonel Sykes. Nepal, Hodgson. 

 A. Presented by Colonel Sykes. 



