SPECIES OF MAMMALIA. 



and white underneath, and the Mus Microuros of Erxleben, 

 Syst. Mam. 403, are referred conditionally by M. Desma- 

 rest to the Arvicolas, as are also, by the same writer, the 

 Lemmus Vittatus, the Lemmus Talpoides, and the Leramus 

 Novaboracenis of Rafinesque, Annals of Nature, Nov. 

 1820, Nos. 9, 10, and 11. 



Lemmus. Incidves ^ ; canines ^ %% ; cheek-teeth^. This 

 sub-genus differs from the preceding only in the character of 

 the fore feet y which, in sorne species, have five, and in others 

 four toes ; but the nails are fitted for digging in all, whence 

 Illiger named them Georychus, or Diggers. 



552. 1. Lemmus Norvegicus (the Lemming.) Reddish- 

 yellow, black, and tawny, irregularly spotted or clouded ; 

 five toes on the fore-feet; thumb-nail large and strong. 

 Length of body five or six inches, of the tail about half an 

 inch. 



Mus Norvegicus, jRa^/. Syn. 227. Cuniculus Norvegicus, 

 Briss. Quad. 100. Mus Lemmus, Lin. Syst. Nat. 80. Glis 

 Lemmus, Erccl. 371. Lemmus Norvegicus, Desm. 287. 



Le Lemming, Buff. Hist. Nat. t. 13. Lemmar vel Lem- 

 mus, Olav^ Magnus de Gent. Septent. 358. 



Icon. Pallas, Glires, tab. 12, A. Schreber, 195. Ency. 

 Method, t. ^l,f. 6. 



Var. a. One-fourth less than the other ; dark above, 

 white underneath, with a lighter band passing from the 

 nose to each ear; tail short. Pallas, Glires, tab. 12, B. 

 Inhabits Lapland. 



553. 2. L. Aspalax (The Zokor Lemming.) Body red- 

 dish-gray ; tail short; fore-feet pentadactylous ; the three 

 intermediate nails very long and arched ; eyes very small. 



Mus Aspalax, Pallas, Glires, 165. 



215 2 Q 2 



