236 Bulletin American Museum of Natural History. [Vol. XX, 



furnished in the M. bocourtianus Dobson (1876), based on 

 specimens from Vera Paz, Guatemala, which agree in size and 

 other features with my Tehuantepec examples. 



The measurements given by Saussure of his specimens are 

 about all that his description furnishes in the way of diag- 

 nostic characters. These, in comparison with measurements 

 of Tehuantepec specimens, of which I have a series of seven 

 well-preserved alcoholic examples, indicate a much smaller 

 animal, comparable with the so-called bulleri. Saussure's 

 measurements here follow, with those of an average Tehuan- 

 tepec specimen of bocourtianus in parentheses: 



mm. 



Length of head and body 55 (61) 



' head 25 (27.5) 



' ears 21 (23) 



" tragus 10 (10) 



' nose-leaf, from base 7 (9) 



' forearm 51 (54) 



" tibia 23(25) 



' calcar 10 (12) 



" tail 31 (35) 



The synonymy of the two species will therefore stand as 

 follows : 



Otopterus bocourtianus (Dobson). 



Macrotus bocourtianus DOBSON, Ann. and Mag. Nat. Hist., XVIII, 

 1876, 436; Cat. Chiroptera, 1878, 467. Vera Paz, Guatemala. 



Macrotus mexicanus J. A. ALLEN, Bull. Am. Mus. Nat. Hist., Ill, 

 1891, 179-181; ibid., IX, 1897, 48. Tehuantepec City, Oaxaca, 

 Mexico. Not of Saussure. 



Otopterus mexicanus (Saussure). 



Macrotus mexicanus SAUSSURE, Rev. et Mag. Zool., XII, 1860, 486. 



Yautepec, State of Morelos, Mexico. 

 Macrotus californicus J. A. ALLEN, Bull. Am. Mus. Nat. Hist., II, 



1889, 1 66. Bolanos, Jalisco, Mexico. Not of Baird. 

 Macrotus bulleri H. ALLEN, Proc. Am. Phil. Soc., XXVIII, 1890, 73; 



Mon. Bats. N. Amer., ?d ed., 1893 (1894), 41. Based on the 



Bolanos specimens, cited above. 



