GLIRES. THE RAT TRIBE. 43 



thick and less sleek than that of the preceding rats. None of the feet 

 are webbed. There is a claw on each of the fore-feet, in place of a 

 thumb or inner toe. All the claws are sharp. The female has eight 

 teats, four on the breist and four on the belly. 



Upper parts of the body blackish, or dark brown, mixed with 

 reddish hairs: under parts dirty white, or cinereous. Tail tipped 

 with a few white hairs. W. B. 



Common about the banks of ditches, ponds, and streams. 



Mus caudd longitudine dimidid corporis, auribus viz 

 vellere prominulis, pedibus subtetradactylis.-Mus amphi- 

 bius. JLinn. Sjst. Nat. Gmel. i. p. 132. 



Mus caudd mediocri, palmis tetradactylis cum unguiculo 

 pollicari, corpore nigricante. Mus amphibius. Erxleben, 

 Syst. regn. animal, gen. 37, sp. 3, p. 385. 



Mus amphibius. Water Rat. Turton, i. p. 83. 

 Kerr, p. 235. 



Mus aquaticus. Brisson, regn. animal, p. 175. Ges- 

 ner, p. 732. 

 . Mus rattus aquatilis. Klein, quad. disp. p. 57. 



Le Rat d'eau. Buff. Sonn. xxv. p. 214, tab. 7, fig. 2. 

 Cuv. Tab. Element, p. 138. 



Water Rat. Penn. Quadr. ii. p. 182. Penn. Brit. 

 Zool. i. p. 218. Shaw's Gen. Zool. ii. p. 73, tab. 129, 

 fig. 1. Smellie's Buffon, iv. p. 290, tab. 82, fig. 2. 



27. THE COMMON MOUSE. Tail long and nearly naked, 

 fore-feet with four toes, thumb without claw. Mus mus- 

 culus. Linn. 



Length of the body 3| inches ; and of the tail nearly the same. 

 This little animal is so common, and so well known, as to need no 

 particular description. 



Mus 



