MAMMALIA. 679 



Myodes PALL, (in part), BLAS. and KEYSERL., Lemmus LINK, 

 DESMAR., BRANTS. Ears hidden beneath the fur. Soles hairy. 

 Fore feet with fossorial claws. Tail very short, hairy. 



Sp. Hypudceus lemmus ILLIG., Mus lemmus L., Museum Wonnianum, 1655, 

 foL p. 325 (fig. of animal and skeleton), PALL. Glir. Tab. xn. A, SCHREB. 

 Sdugth. Tab. 195 A, Cuv. R. Ani., ed. ill, Mammif. PI. 59, fig. i ; the 

 lemming or Northern mouse of passage; 5" to 6" long, above ruddy-yellow, 

 on the top of the head and neck black, below pale ash-coloured. This 

 animal lives on the mountains of Norway and Sweden, and travels to 

 other regions in multitudes, which eat every thing bare on their road, like 

 locusts. This usually forbodes a hard winter. The number of these animals, 

 thus suddenly appearing in situations where they were previously unknown, 

 gave occasion in former times to the strange opinion that they descended 

 from the clouds. Mus. Worm. p. 321; Hypudceus migratori us ILLIG., 

 Lemmus olensis BRANTS, PALL. Glir. Tab. xn. B, SCHREB. Sdugth. Tab. 

 195 B, &c. Here is to be placed Georychus luteus EVERSMANN, Bullet, de 

 laSoc. imp. des natural istes de Moscou, 1840, p. 25, Tab. 2, a species nearly 



allied to Lammus obensis, but distinct according to MIDDENDOBFF. 







Fiber Cuv., ILLIG. Ears hairy, short. Claws compressed, 

 incurved. Toes of hind feet long, bordered at the sides by long, 

 thick, shining hair. Tail longer than half the body, compressed, 

 two-edged toward the extremity, scaly, covered with short, thin 

 hair. (Other characters nearly of Hypudceus.) Dent. form. OWEN, 

 . i_i i_i 2-2 



Sp. Fiber zibethicus Cuv., Castor zibethicus L., BUFF. x. PI. i, SCHREB. 

 Sdugth. Tab. 176, Cuv. R. Ani., ed. ill., Mammif. PI. 58, fig. 2; the 

 ondatra (name with the Hurons) ; length of the body fully i foot, without 

 the tail, which is from 8 to 9 inches long ; the colour usually ruddy-brown, 

 on the top of the head and back darker, in some specimens dark brown. 

 This animal is found from 30 to 69 in North America, lives in grassy 

 marshes and lakes, and on the banks of sluggish rivers. Four or five 

 hundred thousands of skins are annually imported into England, and used 

 in making hats. 



Euryotis BRANTS, WAGN., Otomys F. Cuv. Upper incisors 

 (and mostly lower also) indented by a longitudinal groove. Molar 

 teeth composed of transverse lamellae. Ears somewhat large, 

 rounded, ample. Tail moderate, thinly haired. (Feet and habit 

 of mice.) 



Sp. Euryotis irrorata BRANTS Muizen, p. 94 (and plate at the end of the 

 work), SMITH HI. of the Zool. of S. Afr., Mamm. PI. 22, Otomys bisul- 

 catus F. Cuv., Mammif. Livr. 6 1; Euryotis unisukata SMITH, F. Cuv. 

 1.1. Livr. 60, &c. Mice of South Africa; of the teeth F. CUVIER gave 

 a description and figure, Des Dents des Mammif. PI. 60, pp. 168, 169. 



