SPECIES OF MAMMALIA. 



J osselyrCs New England. Massascus, S/wzYA's Vii'gimai27 . 

 Musk Beaver, Pen. Quad. ir. 118. 



Icon. Sarrazin, I. c. tab. ii. Buff. I. c.pl. 1. 



Inhabits Canada, and other parts of North America. 



Sub-Genus II. — Arvicola, Lacep. (Campagnols ordi- 

 naires, Cuv.) Teeth like those of last sub-genus ; but the 

 hind feet have not the stiff hair or swimming apparatus ; tail 

 round and hairy. 



533. 1. A. Amphibius (Water-Rat.) Blackish gray, 

 slightly tinted with yellow, lighter underneath ; tail black ; 

 rather larger than a common Rat. 



Mus Amphibius, Lin. Syst. Nat. 82, and Faun Suec, 

 No. 32. Mus aquaticus, Briss. Regn. Anim. 175. Mus 

 aquatilis, Ray, Synops. 217. 



Ratd'Eau, Buff. t. 7. Wasser-maus, Kramer, Austr. 316. 

 Water-Rat, Pen. Br. Zool. i.No.21. 



Icon. Belon. 30, tab. 31, Buf. I. c. tab. 43, Screb. 186. 



Inhabits the whole of Europe, Northern Asia, and North 

 America. 



Var. a. Niger, Lin. Inhabits Siberia. 



Var. b. Maculata, Pallas, yellowish, with a large white 

 spot on the shoulder. 



Var. c. Paludosa, Lin. black, feet white. 



534. 2. A. Arvalis (the Field-Mouse.) About as big as 

 the common Mouse; reddish ash colour ; ears small and 

 round. 



Mus agrestis, Ray^ Syn. 218. Mus terrestris, Lin. Syst. 

 82. Mus campestris minor, Briss. Regn. Anim. 176. Mus 

 arvalis, Pallas, Nov. sp. fasc. i. 78. 



Campagnol, Buff. Hist. Nat. t. 7. Short-tailed Field 

 Mouse, Pen. Br. Zool. i. No. 31, and Meadow Rat, Quad. 

 11.205. 



2oa 



