No. i.] Allen on Mexican Mammals. 1 79 



20. Macrotus bulleri H. Allen. 



Macrotus calif ornicus J. A. ALLEN, Bull. Am. Mus. Nat. Hist., II, No. 3, p. 

 166 (Oct. 21, 1889). 



Macrotus bulleri H. ALLEN, Proc. Am. Phil. Soc., XXVIII, p. 73 (April 14, 

 1890). 



Five specimens (skins), three males and two females, and an 

 additional skull, San Pedro, Guadalajara, Sept. 27, 1889. These 

 are additional to the eleven specimens already recorded from 

 Bolanos (1. c.), and provisionally referred to M. calif ornicus. 



The series from Bolanos, Northern Jalisco, were taken in July ; 

 the series from Guadalajara, Central Jalisco, were collected in 

 September. There is no appreciable difference in coloration in 

 the two series. Above the color is nearly uniform dark plum- 

 beous, with the basal half of the fur pure white ; below the color 

 is much lighter and more grayish. The length of the forearm 

 varies from 42 to 48 mm., averaging 45. 



On sending the Bolanos specimens to Dr. H. Allen, the well- 

 known specialist in Chiroptera, some time after the publication 

 of my paper on Dr. Buller's first collection of Mexican mammals, 

 Dr. Allen found them to be specifically different from M. cali- 

 f ornicus, and later described them as above cited. 



21. Macrotus mexicaims De Saussure. 



Macrotus mexicanus DE SAUSSURE, Rev. et Mag. de Zool., 2 e Ser., XII, 1860, 



p. 486. 

 ? Macrotus bocourtianus DOBSON, Ann. & Mag. Nat. Hist., 4th Ser., XVIII, 



1876, p. 436 ; Cat. Chirop., 1878, p. 467. 



Eight skins with skulls, eight additional skulls, and six speci- 

 mens in alcohol, Tehuantepec City, Jan. 27, 1890. 



This series of fourteen specimens differs strikingly in respect 

 to coloration from the series of thirteen specimens from Bolanos 

 and Guadalajara, State of Jalisco, but not appreciably in any 

 other external feature. In both forms the basal half or two-thirds 

 of the fur of the dorsal surface is pure white passing gradually 

 into the darker color of the terminal portion, with the extreme 

 tips of the hairs grayish. In bulleri the terminal third or more 

 of the fur is dark plumbeous, varying from dark clove brown to 

 plumbeous black ; in mexicanus it is dark brown, varying from 

 pale cinnamon to dusky chestnut. The same tints prevail respec- 



