>M/ 



and Speogfof Mammalia. 265 



front upper large with three cross ridges ; the middle oblong, and the 

 hinder much narrowed behind, each with two cross ridges; the front 

 lower grinder larger, narrowed in front with three cross ridges ; hinder 

 each with two ridges, the hindermost smallest, rather narrowed be- 

 hind ; tail short, thick, with whorls of scales and scattered bristles ; 

 toes 4 — 5, moderate, the three middle subequal, long, the outer 

 moderate ; claws small, compressed ; front thumb tubercular, with a 

 rudimentary claw ; ears moderate, naked. 



This genus is easily known from the Rats (Mus) by the large 

 size of the cutting teeth and the shortness of the tail ; it appears to 

 be intermediate between the Rats (Mus) and Rhizomys. 



Nesokia Hardwickii, Mus. Hardwickii, Gray, Mag. N. Hist. Red- 

 dish brown, with longer dark brown hairs on the rump ; sides grayer 

 and paler ; hair lead-coloured at the base. 



Hab. India, General Hardwicke. 



The Hypudceus Guira, Langsdorf, in Brandt's * Mem. Peters.' iii. 

 1835, t. 14, is very much like this animal in external appearance, and 

 may be a second species of the genus. 



Vandeleuria, n. g. 



Upper cutting teeth triangular, with a deep groove near the mid- 

 dle on the oblique front edge ; grinders ? ears hairy ; hind feet 



very long, slender, soles bald beneath ; toes 4*5, long, slender, com- 

 pressed, the three middle subequal, the hinder middle very long; 

 the front outer very rudimentary, scarcely visible ; the front inner 

 weak, the hinder outer longer than the inner ; claws small ; tail very 

 long, scaly, with scattered hairs, with longer more crowded hairs at 

 the tip ; fur soft, with scattered longer bristles on the back and rump. 



Lives on trees in India. 



Very like the American Gerbilli in external appearance and form 

 of hind feet ; differs from the African Dendromys in the form and pro- 

 portion of the toes. 



Vandeleuria oleraceus, Mus oleraceus, Sykes ? Walter Elliot's Ma- 

 dras Journ. x. 214. n. 37. Mus. longicaudatus, W. Elliot' s Madras 

 Journ. x. 94. Chestnut-brown ; back blacker ; feet, lips, and beneath 

 white ; tail half as long again as the body and head, brown- olive, 

 white below. 



Hab, Madras, Walter Elliot of Wolf Lee. 



" Lives always in bushes or trees, up which it runs with great fa- 

 cility." 



Arvicola Roylei. Rufous gray, beneath gray ; hair dark lead- 

 colour at the base, gray at the top, those of the back rufous at the 

 tip ; ears moderate, rounded, hairy ; tail about one-third the length 

 of the body, covered with pale rigid hairs ; the cutting teeth yellow 

 in front, smooth, grooveless. Length of the body and head, 3" 6'"; 

 of tail, 1" 2'" ; of the hind feet and toes, 0" 9'". 



Hab. India (Cashmere). Brit. Mus. 



The lower grinder wide in front, narrow behind ; the first one has 

 a large rhombic anterior process, and three folds on the outer side 

 and four on the inner one ; the two other grinders have three nearly 



