309 
PSEUDOSTOMA (GEOMYS) MEXICANUS.-Le Conte. 
P. Mexicanus, mollipilosus, saturate einereus, supra nigro-tiactus, nasa 
brunneo, cauda mediocri, pilosa, versus apicem subnuda, auribus brevibus, 
primoribus superioribus medio profunde sulcatis. 
SYNONYMES. 
Asoomys Mexicanus. — Lichtenstein, A bhandl. Berl. Akad. 1827, 113. 
“ “ Brantz, Muiz. 27. 
Wagner, Schreb. Saiigth. Suppl. 3, 384. 
Schinz, Syn. Mam. 2, 133. 
Saccophorus Mexicanus. — Fischer, Bichardson, Bep. Brit. Ass. 6, 156. 
“ “ Syn. Mam. 305. 
“ Eydoux, Voy. Favorite, 23, tab. 8. 
DESCRIPTION. 
One specimen, Mexico, Mr. J. Spearman. Pur very fine, shining, very 
dark cinereous, above tipped with black, beneath entirely cinereous ; nosa 
and whiskers brownish ; breast and fore-legs slightly tinted with brown. 
Ears short. Upper incisors with a very deep groove on the middle of the 
anterior surface. Feet thinly clothed with brownish hair. Tail covered 
with hair, which is very dense and long at the base, gradually becoming- 
shorter and more scanty, leaving the tip almost naked. (Dr. Le Conte.) 
dimensions. 
Inches. 
Length from nose to root of tail, 11 
“ tail, 5 
Pore-foot to end of middle claw, P7 
Hind-foot to end of middle claw, P7 
