:j_>o Field Columbian Museum — Zoology, Vol. III. 



bats could not be found in the house during the day, but at 

 night they entered through the open windows, bringing with 

 them large brown mole crickets, which they devoured at their 

 leisure while suspended from the roof. The floor of the house 

 below their perches was covered with the remains of the insects. 

 At Surveyor's Wells, in Mesquite Valley, many of these bats 

 were seen at dusk, drinking. About Furnace Creek Ranch they 

 were also common." 



Myotis evotis. 



Vespertilio evotis H. Allen, Mon. X. Am. Bats, 1864, p. 48. 

 Myotis evotis Elliot, Syn. N. Am. Mamm., 1901. p. 406. 

 1 Specimen, from Hot Springs, in Long Canon, Mount Whitney. 

 This was the only example seen on the entire journey. 



PIPISTRELLUS. 

 Pipistrellus hesperus. 



Scotophilus hesperus M. Allen, Mon. N. Am. Bats, 1864, p. 43. 



Pipistrellus hesperus Elliot, Syn. N.Am. Mamm., 1901, p. 409. 



23 Specimens: 2 Palm Springs, 1 Oro Grande, 4 Wild Rose 

 Springs, Panamint Mountains, 2 Beveridge Canon, Inyo Moun- 

 tains,. 1 Lone Pine, 1 Rose Station, near Fort Tejon, 9 north of 

 Canada de las Uvas, 3 Bailey's Ranch, (11 alcoholics.) 



"The specimens from Wild Rose Spring are very pale in color 

 and are nearest the typical style. "This is the most abundant 

 bat in the west, where it occurs throughout the desert, from 

 the lowest valley to the Transition Zone." 



VESPERTILIO. 

 Vespertilio fuscus. 



Vespertilio fuscus Beauvois, Cat. Peale's Mus., 1796, p. 14. 

 Elliot, Syn. N. Am. Mamm., igor, p. 410. 



26 Specimens: 12 Hot Springs, Long Canon, Mount Whitney, 

 5 Lone Pine, 9 Fort Tejon. (3 alcoholics.) 



The examples from Fort Tejon are much darker than the 

 rest, the young being almost black. There is, however, consid- 

 erable variation observable in color among individuals of this 

 species. 



NYCTINOMl'S. 

 Nyctinomus mexicanus. 



Nyctinomus mexicanus Sauss., Rev. Zool., i860, p. 283. 

 Nyctinomus mohavensis Merr., N. Am. Faun., No. 2, 1889, 

 P- 25- 



