102 



ZOOLOGY. 



Specimens. 



No. 



Name. 



I .ocality. 



Dale. 



Collector. 



Remarks. 



3S3 

 384 

 8 A 



140 



350 



74 





Fort Garland, Colo 



do 



June 20, 1S73 

 .... do 



II. W. Ilcnshaw.... 



do 



do 



Dr. J. T. I'othrock.. 



II. W. Henshaw.... 



Dr. C. G. Newberry. 



In flesh. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



do 



do 



do 



Nov. 5, 1S73 

 Aug. 12, 1S73 

 June 15, 1S73 

 Aug. 23, 1S73 



do 



do 



do 



Dayton, Colo 



Rio Grande, Colo 



White Mis., Arizona 



Genus HESPEROMYS, Waterh. 



Subgenus VESPERIMUS, Coues. 



Musculus, Bar.. Am. Month. Mag., iii, ISIS. 440 (used in connection with leucopus, but 

 ineligible for obvious reasons). — Hesperomys, Baird (with exclusion of 

 Onychomys and Oryzomys). 

 Calomys, Aud. & BAOH., Q. N. A., ii, 1851, 303 (type aureolus ; not of Waterhouse). 

 Vesperimus, Coues, Proc. Acad. Nat. Sci. Phila., 1S74, ITS. 



Chars. — Teeth strictly sigmodont. Back upper border of orbit not beaded (com- 

 pare Onychomys and Oryzomys). Coronoid not attaining level of condyle. Cranial 

 and dental characters in general strictly those of Hesperomys. Small but well-devel- 

 oped cheek-pouches! Of medium and small size, lithe form, and quick movement. 

 lives large, prominent. Snout pointed. Ears large, rounded, thin, scantily and finely 

 pilous ; antitragus evident but not valvular. Fore feet hardly or not half as long as 

 the hinder; palms naked; fore claws not larger than the hinder; digits slender, 3d 

 and Itli subequal and longest, 2d and 5th successively much shorter. Hind feet long, 

 slender; soles 6-tuberculate, naked or scant-furred on the posterior third ; I'd, 3d, and 

 It Ii subequal and much the longest; 5th shorter; 1st shortest. Tail terete, slender, 

 closely hairy, ranging in length from as long as body alone to a little longer than head 

 and body. Pelage soft, close, glossy, with but few longer bristly hairs ; feet and 

 under parts white or whitish ; body and tail more or less distinctly bicolor. No woolly 

 tufts of hair about the ears. Type, V. leucopus. 



HESPEKOMYS (VESPERIMUS) AMEKICANUS, (Kerr) Coues. 



White-footed Mouse. 



American Field Mouse or Eat, Penn., Syn., 1771, No. 303; Hist. Quad., 1781, No. 302; 



Arct. Zool., i, 17S4, 131. 

 American Wandering Mouse, Barton, Med. & Surg. Jouru. Phila., i, 1805, 31. 

 Mus sylvaticus, var., Erxl., Syst. A v., i, 1775, 390 (based on ''New York var." of 



Pennant). 

 Mus sylvaticus var. noveboracensis, Fiscil, Syn., 1829, 318 (the same). 

 Mus noveboracensis, Selys-LonGtCH., Etudes Microm., 1839, 07. 

 Mus agrarius var. americanus, Kerr's Linn., 1792, 231 (based on Pennant). 

 Mus agrarius, Godm., Am. Nat. Hist., 1, 3d ed., 1800, 310 (also in the earlier editions). 

 Cricetus myoides, Carper, Zool. Jouru., v, 1830, 204, pi. 10 (Canada). 

 Hesperomys myoides, Laird, M. N. A., 1857, 472 (Vermont, based on Capper). 



