214 
/ 
ARVICOLA O R YZIV OR A.— Bacii. 
Rice Meadow-Mouse. 
PLATE CXLIV. Fig. 3 (Octavo Edition). 
A. Pennsylvanicam cquans, capito longo, rostro acuto, corpore gracili, 
auriculis prominulis, cauda longitudine trunci ; supra fcrruginea rufus, 
subtus subalbida. 
CHARACTERS. 
Size pf Arvicola Pennsylvanica ; head, long; nose, sharp ; body, slender ; 
ears, prominent ; tail, the length of the body, without including the head ; 
colour, rusty brown above, beneath whitish. 
DESCRIPTION. 
In form this species bears a distant resemblance to the cotton rat (Sig- 
modon hispidum ) ; it is, however, a much smaller species. The ears, which 
are half the length of the head, are rounded, and are thickly clothed with 
hair on both surfaces ; the feet are rather small ; there is a short blunt 
nail in place of a thumb ; under surface of palms, and tarsus, naked ; toes 
on the hind-feet, long, the three middle ones of nearly an equal length ; 
tail, rather long, thickly clothed on both surfaces with short hairs ; whis- 
kers, short, scarcely reaching the cars. 
COLOUR. 
The fur on the upper surface is slate colour, tipped with light brown 
and black, giving it on the dorsal aspect a dark grayish-brown tint, fading 
into lighter on the sides, and into whitish-gray on the belly and under 
surface ; the ears arc of the colour of the sides ; feet, whitish ; tail, brown 
on the upper surface, lighter beneath ; whiskers, black and white. 
DIMENSIONS. 
Inches. 
- 5 
- 4 
Length of head and body, - 
“ of tail, - 
Lines. 
O 
