SPECIES OF MAMMALIA. 



546. 14. A. Xanthognatus (Yellow-cheeked Arvicola.) 

 Yellow, varied with black on the upper parts ; ashy-gray 

 underneath ; cheeks yellow. Length five inches. 



Lemmus Xanthognatus, Leach, Nat. Miscel. i. Arvicola 

 Xanthognatus, Desm. Ency. Method, sp. 441. A. Xan- 

 thognata, Harlan. 



Icon. Leachi I. c. t. 26. 



Inhabits the shores of Hudson Bay. 



Obs. Perhaps a variety of the common species. 



547. 15. A. Hortensis (Garden Campagnol.) Body above 

 ferrugineous brown ; sides lead-coloured ; underneath yel- 

 low ; hairs coarse, standing more or less obliquely from 

 the body, giving the animal a shaggy appearance ; ears 

 broad, oval ; head globular ; snout contracted, conical ; 

 tail more than half as long as the body. Length of body 

 and head five inches and a half, tail two inches and a half. 



Arvicola hortensis, Harlan, Faun. Amer. 138. 



Sigmodon, Say et Ord. Jour. Acad. Nat. Sci. Phil. iv. 



Icon. Jour. Acad. N. S. Phil. t. 



Inhabits Florida. 



Obs. This species is the type of Mr. Say and Ord's genus 

 Sigmodon, which only differs from Arvicola in some slight 

 variation in the form of the plates of the teeth. 



.548. 16. ^. Pa/w^^m (Marsh Campagnol.) Body above 

 dark grayish-brown; beneath pale lead-coloured; snout 

 rather elongated, reddish-brown at its extremity ; ears mo- 

 derately long, slightly edged with hair ; tail short, slightly 

 hairy, 



Arvicola Palustris, Harlan, Faun. Amer. 136. Arvicola 

 Riparius, Ord. Jour. Acad. Sci. Phil. iv. 



Icon. 



Inhabits the shores of the Delaware, living on the seed 

 of the wild rice. 



213 'i Q 



