Vol. IX] TAYLOR— COOPER'S MAMMALS 99 



Microtus townsendii (Bachman) 



"Arvicola Townsendii, Bachman" (part), Cooper, Pac. R. R. 

 Expl. and Surv. 12, book 2, 1860, p. 86 (Abundant on the 

 meadows of Shoalwater Bay). 



''Arvicola Tozvnsendii, Bachm." (part). Cooper, Proc. Cal. 

 Acad. Sci., 4, 1870, p. 70 (Latitude of San Francisco said to 

 be southern Hmit of distribution.) 



Specimen examined. — One: No. 5300, Mus. Comp. Zool. 

 Harvard Univ. ; original label lacking ; obverse of oldest label 

 attached "N. Pacific R. R. Survey. Gov. I. I. Stevens 464 

 Arvicola townsendii skull 1595 Shoalwater Bay, W. T. Dr. J. 

 G. Cooper." 



Skull removed ; skin stuffed with cotton, in good condition ; 

 fore feet spread, pointing out to sides ; hind feet pointing irreg- 

 ularly to rear ; tail not skinned out, disposed posteriorly. 



Microtus californicus californicus (Peale) 



"A[rvicola] Calif ornica" (probably part), Cooper, Zoology, 

 in Cronise, The Natural Wealth of California, 1868, p. 445. 



''A[rvicola] montana" (probably part), Cooper Zoology, in 

 Cronise, The Natural Wealth of California, 1868, p. 445. 



"A[rvicola] edax" (probably part), Cooper, Zoology, in 

 Cronise, The Natural Wealth of California, 1868, p. 445. 



"Arvicola edax Lee." (probably part), Cooper, Proc. Cal. 

 Acad. Sci., 4, 1870, pp. 63, 69 (Believed to be peculiar to Cali- 

 fornia; not known to occur north of San Francisco Bay). 



"Arvicola edax" (probably part). Cooper, Amer. Nat., 4^ 

 1871, p. 757 (Monterey; called the "Monterey Field-mouse"). 



Specimens examined. — Two: Nos. 145279, 145280, U. S. 

 Nat. Mus. ; No. 145279, obverse of label "424 Arvicola ['edax* 

 pencilled in] Monterey Cal. Aug. 23 '61"; reverse, eleven meas- 

 urements. No. 145280, obverse of label "Arvicola montana 5 

 Oakland Cal. Apr. 3 '63, 950 J. G. C." ; reverse, eleven meas- 

 urements. 



Specimens prepared as usual ; skulls inside skins, fore feet 

 folded back on breast; hind feet disposed irregularly behind 

 body except in No. 145280, in which hind feet are crossed close 

 up to posterior end of body ; tail not skinned out. 



