RODENTIA— M V1UDJE— ARVICOLA EIPAEIUS. 



107 



Arvicola 



Arvicola 



Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 

 Arvicola 



xanttwgnatha, Harlan, Pn. Am., 1S25, 130 (also of Godman, Say, DeKay, 



au<l Linsley, but not of Leach nor of Richardson). 

 alboru/escens, Emmons, Rep. Quad. Mass., 1840, GO (albino). 

 hirsutus, Emmons, loc. cit. 



nasitia, Baoum., J. A. N. S. Phila., viii, 1842, 290 (Massachusetts). 

 oneida, DeKay, K Y. Fn., i, 1842, 88, pi. xxiv, f. 1 (New York). 

 rufescens, DeKay, op. cit., 85, pi. xxii, f. 1 (New York). 

 occidentalis, Peale, Mamm. U. S. Ex. Ex., 1848, 45 (Puget Sound). 

 californica, Peale, op. cit., 4G (California). 

 Montana, Peale, op. cit, 44 (California). 

 cdax, LeC, P. A. N. S. P., vi, 1853, 405 (California), 

 borealis, LeC, op. cit., 407 (Rhode Island), (not of Rich.). 

 trowbridgei, Be, M. N. A., 1857, 529 (in text), (California). 

 longirostris, Bd., op. cit., 530 (California). 

 modesta, Bd., op. cit., 535 (Rocky Mountains), (very young). 

 rufidorsum, Bd., op. cit.. 52(3 (Mass.), (reddish specimen). 

 breweri, Bd., op. cit., 525 (Muskeget, Mass. ; bleached insular race). 



Specimens. 



No. 



Name. 



Locality. 



Date. 



Collector. 



Remarks. 



185 



188 A 9 



188 B$ 

 B 1 



B3 

 106 

 196 

 200 

 172 

 62 



74 



742 



A. (M.) riparius . . 



do 



do 



Taylor River, Colo 



Twin Lakes , Colo 



do 



Aug., 1S73 

 Sept., 1S73 

 do 



Dr. J. T. Rothrcck.. 



do 



do . 



In flesh. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



do 



do 



Aug., 1S73 

 .... do 



do 



do . . . 



do 



do 



do 



do 



do 





July, 1S73 

 Sept., 1S73 

 Oct., 1S73 

 Aug., 1S73 

 do 



Lt. W. L. Marshall . . 



do 



do 



Dr. J. T. Rothrock.. 

 do 



do 



do 



do 



Half Moon Creek, Colo.. 

 do 



do 



do 



White Mts., Arizona 





Dr. C. G. Newberry. 

 H. W. Henshaw.... 



Mount Graham, Arizona- 



Oct. 19, 1874 



Numerous specimens attest the abundance of this species in the regions 

 explored. Only one other is certainly known from tire same portion of the 

 continent, the A. curtata of Cope, a variety of Pedomys austerus, the 

 synonymy of which last is also subjoined for comparison : 



Subgenus PEDOMYS, Baird. 



Pedomys, Br>., M. N. A., 1857, 517 (type, A. austerus, LeC). 

 For characters of this subgenus, see table, p. 100. 



