LEMMUS TOKQUATUS. — LEMMUS MIGRATORIUS. 95 



Lemmus torquatus. 



Lemmus torquatus, Desm. Mamm. Sp. 454; De Selys, Index des 



Mamm. 

 Myodes torquatus, Pall. Zoog. Boss. As. 



Description. — Pur rusty brown, ■with a black dorsal line 

 and a white collar, interrupted beneath ; five toes on the 

 fore-feet ; claws moderately strong, simple ; the claw of 

 the thumb short and rounded ; resembles a good deal in its 

 general form the L. Norvegieus ; feet rather short and 

 strong, especially the fore-feet ; tail very short and hairy, 

 brown, except at its extremity, which is white ; the end 

 of the nose divided by a very narrow furrow. The fur, 

 which is very fine and soft, is varied with rusty brown, or 

 greyish yellow, and brownish above ; the belly, and all the 

 parts beneath, dirty white ; feet white mixed with brown ; 

 nose velvety and black, which colour runs up the centre of 

 the face to the forehead ; cheeks whitish, with black mou- 

 staches as long as the head ; behind each ear is a patch of 

 chestnut-brown, and beyond this one of dull white. 



Length of head and body, 3 inches 1 line ; head 1 inch ; 

 tail, including the hair, 7 lines. — F. M. 



Found within the Arctic Circle, and in the most northern 

 parts of Siberia, and (according to De Selys Longchamps) 

 on the shores of the "White Sea. 



Lemmus migratorius. 



Lemmus Obensis, Bkandt. 



Arvicola Obensis, Schinz, Europ. Faun. vol. ii. p. 509. 

 Myodes Obensis, Keys. u. Blas. Wirbelth. Europ. No. 35, p. 32. 

 Mus Lemmus, var. Sibirica, Lapponica, Obensis, Pallas, Not. Spec. 

 Glir. 



Description. — No distinctly marked dorsal line. Fur on 

 the upper parts of the body a uniform brownish-yellow 

 colour, with black hairs interspersed ; sides light yellowish ; 



