VOL. XI, PP. 179-180 JULY 1, 1897 



PROCEEDINGS 



OF THR 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW BAT OF THE GENUS ANTROZOUS FROM 

 CALIFORNIA. 



BY 0. HART MERRIAM. 



Up to the present time only a single species of the genus An- 

 trozous has been recognized. It was described by Le Conte in 1853, 

 under the name Vespertilio pallidus, from a specimen said to be 

 from California. But later, both Baird * and Harrison Allen f 

 state explicitly that Le Conte's type came from El Paso, Texas, 

 where it was collected by the U. S. and Mexican Boundary Com 

 mission. Moreover, the measurements of the type specimen 

 show that it is the Sonoran desert form not the Californian. 



The specimens collected in Nevada and California by the 

 Death Valley Expedition in 1891 show that the typical form 

 ranges westward from El Paso over the Sonoran deserts of the 

 southern part of the Great Basin as far as Owens Valley, at the 

 east base of the Sierra Nevada, and that another form occupies 

 the region west of the Sierra. The latter was described by me 

 five years ago, under the name Antrozous pallidus pacificus, but 

 the description, along with a number of others of new mammals 

 collected by the expedition, was held for the mammal report, 

 which has been so long delayed and which is not likely to be 

 printed for another year. For this reason it is thought best to 

 publish the description in advance of the report, and it is pre 

 sented herewith. 



The Biological Survey has secured a fine series of specimens 

 of Antrozous, illustrating its distribution from Mexico to Oregon ; 



* Mexican Boundary Survey, vol. II, part II, Mammals, p. 5, 1859. 

 t Monograph of the Bats of North America, p. 69, 1864. 



42 BIOL. Soc. WASH., VOL. XI, 1897 (179) 



