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ARVICOLA AUSTERUS . — L e Conte. 
Baird’s Aryicola. 
(Not figured.) 
A.. Supra fusco et nigro permixtus, subtus obscure schistosus. Auribus 
extra pilos extantibus, extus pilosis. Cauda gracili, dense pilosa. 
CHARACTERS. 
Colour , above mixed brown and black, beneath dark slate-colour, mixed with 
brown ears longer than the fur, hairy on the outside j tail slender, thickly 
clothed with hair. 
SYNONYME. 
Aryicola austerus. — Le Conte, Proc. Acad. Nat. Sci., Phila. Oct. 25, 1853, p. 405. 
DESCRIPTION. 
Head large and blunt ; ears rounded, longer than the fur, outwardly 
hairy, inwardly only so on the upper margin ; antitragus large, semi-cir- 
cular ; whiskers shorter than the head ; feet covered with shining hair ; 
thumb tubercle with a compressed, sharp, hooked nail. 
Tail slender, covered with short hairs. 
COLOUR. 
Hair, above dark plumbeous, tipped with brown and black, beneath 
dark slate-coloured, mixed with brown, particularly on the breast, the 
upper and under surfaces of the body being nearly alike ; whiskers black 
and grey ; feet grey ; tail mixed brown and black above, brownish grey 
beneath. 
DIMENSIONS. 
Length, 
“ of head, - 
“ “ ears, - 
“ “ fore leg, 
“ “ hind “ - 
“ “ tail, - - - 
Inches. Lines. 
5 5 
1 3 
8 
1 1 
1 5 
1 4 
