AMERICAN BATS OF THE GENERA MYOTIS AND PIZONYX 157 



in M. c. oalif amicus these brown tips distinctly pale out where they 

 meet the plumbeous basal portion, giving a lighter, redder effect to 

 the whole. 



IttYOTIS CALIFORNICUS PALLmUS Stephens 



My Otis caUfomicus Millek, North Amer. Fauna, No. 13, p. 69, October 16, 

 1897 (part).— Bailey, North Amer. Fauna, No. 25, p. 208, October 24, 1905 

 (part).— Caby, North Amer. Fauna, No. 33, p. 208, August 17, 1911 (part).— 

 Waeeen, Mammals of Colorado, p. 274. 1910 (part). 



Myotis caMforniciis paUidJiis Stephens, Proc. Biol. Soc. Washington, vol. 13, 

 p. 153, June 13, 1900. — Elliot, Synops. Mamra. North Amer., Field Columb. 

 Mus., publ. 45, zool. ser., vol. 2, p. 405, March, 1901 ; List Land and Sea 

 Mamm. North Amer., Field Columb. Mus., publ. 57, zool. ser., vol. 2, p. 517, 

 June, 1901. — Miller and Rehn, Proc. Boston Soc. Nat. Hist., vol. 80, 

 p. 256, December 27, 1901. — Elliot, Field Columb. Mus., publ. 91, zool. ser., 

 vol. 3, p. 319, March, 1904. — Tbouesbabt, Catal. Mamm. viv. foss.. suppl., 

 p. 93, 1904. — Elliot, Land and Sea Mamm. Middle Amer., Field Columb. 

 Mus., publ. 95, zool. ser., vol. 4, p. 579, 1904 ; Check List Mamm. North 

 Amer., Field Columb. Mus., publ. 105, zool. ser., vol. 6, p. 477, 1905. — 

 Stephens, California Mammals, p. 266. 1900. — Eu.iot, Catal. Mamm. Field 

 Columb. Mus., Field Columb. Mus., publ. 115, zool. ser., vol. 8, p. 503, 1907.— 

 Lyon and Osgood, Catal. Type-Sp. Mamm. U. S. Nat. Mus., Bull. U. S. 

 Nat. Mus., No. 62, p. 291, January 28, 1909— Milleb, List North Amer. 

 Land Mamm. 1911, Bull. U. S. Nat. Mus., No. 79, p. 57, December 31, 

 1912.— J. Grinnell, Proc. California Acad. Sci., ser. 4, vol. 3, p. 277, August 

 28, 1913; Univ. California Publ. Zool., vol. 12, p. 265, March 20, 1914.— 

 H. W. Grinnell, Univ. California Publ. Zool., vol. 17, p. 288, January 31, 

 1918.— J. Grinnell, Univ. California Publ. Zool., vol. 21, p. 314, January 27, 

 1923.— Miller, List North Amer. Recent Mamm. 1923, Bull. U. S. Nat. 

 Mus., No. 128, p. 70, April 29, 1924. 



Type JoccMty. — Vallecito, San Diego County, Calif, 



Type specimen, — Adult male (skin and skull), No. 99829 United 

 States National Museum (Biological Survey collection), collected at 

 Vallecito, San Diego County, Calif., April 1, 1895, by Frank 

 Stephens. 



Distribution. — Desert regions of the Great Basin. (See map 11, 

 p. 149.) 



Diagnosis. — A pale desert race well characterized by the tricolor 

 pattern of the hairs of the back. These have a dark base, succeeded 

 by a whitish portion, and fulvous tip ; tail long. 



Color. — General color above (topotypes), very pale, nearly "light 

 ochraceous buff" (Ridgway, 1912). The hairs of the body are 

 " plumbeous black " at the base, with a ring of buffy whitish succeeded 

 by a pale ochraceous tip. The short fur at the back of the ears is 

 whitish to the base, that on the interfemoral membrane pale och- 

 raceous throughout. The short stiff hairs of the lips and about the 

 eyes are slightly darker brownish. Below, the long silky tips of 

 the hairs are everywhere clear dull white to " pale buff "; those at the 

 sides on the membrane are of this tint throughout, elsewhere the 



