272 BULLETIN 17 8, UNITED STATES NATIONAL MUSEUM 



^^. Immature male. Skin and skull. 

 3220 



Skin cannot now be found. Sknll Grade C. Two extra molars present, 



perhaps belonging to the missing lower jaws of the two preceding. 



2833. Specimen in alcohol ; cannot now be found. 

 *Arvicola californica Peale. 



U. S. Exploring Expedition 8 (Mamm. and Ornith.), p. 46, 1848. 

 = lMicrotus] calif ornicus (Peale). See Trouessart, Catalogus Mammalium tarn 

 Viventium quam Fossilium, p. 563, 1897. 



152§?. Skin and skull. Vicinity of San Francisco Bay, probably 



at San Francisquito Creek, near Palo Alto, Santa Clara County, 

 Calif. Collected by T. R. Peale, October 26, 1841. U. S. Ex- 

 ploring Expedition (1838 to 1842). 



Skin poorly made np ; vertebrae left in tail. It looks rather discolored. 

 The catalog entry says "Dry," but the specimen looks asi if it had been 

 in alcohol at one time. An old parchment label further bears out this 

 view ; skull Grade B. 



Type not designated by number. In the entry of the skin in 1872 (12 

 years after entry of the skull ^*) under the remarks column of the catalog 

 is written in the same handwriting as that of the original entry "type 

 of caUfornicus." The old parchment label on the specimen is marked 

 "Arvicola Californica Peale." One of Coues's labels is attached, marked 

 "Monographs of American Muridae. Elliott Coues, U. S. A., No. 10082. 

 Type of Arvicola 'californica'." On page 534 of his Mammals of North 

 America, Baird speaks of having the original specimen. In the table 

 on page 173, Monographs of North American Rodentia, Coues has No. 

 10082 marked as the type of "caUfornicus." 



f Microtus caUfornicus constr ictus Bailey. 



North Amer. Fauna 17 : 36, June 6, 1900. 

 98347. Skin and skull. Adult male. Cape Mendocino, Humboldt 

 County, Calif. September 6, 1899. Collected by Vernon Bailey. 

 Original number 7174. 

 Well-made skin in good condition ; skull Grade A. 



f Microtus caUfornicus vallicola Bailey. 



Proc. Biol. Soc. Washington 12 : 89, Apr. 30, 1898. 



25S93 Skin and skull. Adult female. Lone Pine, Inyo County, 



32806 



Calif. December 23, 1890. Collected by E. W. Nelson. Original 

 number 149. 



Well-made skin in good condition ; skull Grade A. 



"Bailey (North Amor. Fauna 17: 35, 1900) thinks the skuU is abnormal or never came 

 from the same animal as the skin. The lapse of time between the two entries tends to 

 substantiate this view. 



