1918 | Grinnell: A Synopsis of the Bats of California 309" 
eurved backwards, sabre-shaped, passing 1.5 millimeters below gums 
of lower teeth when mouth is closed, lower pair fitting into sockets 
between upper incisors and canines. First upper and lower pre- 
molars much smaller than second ones. Second upper premolars 
decidedly longer than molars, with very acute outer cusps; internal 
cusps not particularly developed. 
Measurements (in millimeters from alcoholic specimen) .—Length 
of head and body, from tip of nose to base of tail, 79; length of tail, 
52; length of tail beyond interfemoral membrane, 33; length of head, 
31; length of ear, from notch between antitragus and coneh to an- 
terior point of margin, 25; length of antitragus, 7; height of anti- 
tragus, 4.5; width of tragus at top, 2.5; ears united at base for, 3.5; 
leneth of forearm, 60; length of thumb, not including metacarpal, 8; 
extent of outstretched wings, 357; length of tibia, 18; leneth of foot, 
13; length of caleaneum (poorly defined), about 16. 
The above description is compiled from Ward’s (1891, pp. 747— 
750, original description). A comparison of this deseription with 
those given by H. Allen (1894, p. 171) and J. A. Allen (1894, p. 326) 
shows agreement in general characters. Ward, however, notes the 
absence of a gular pouch, while J. A. Allen indicates the presence of 
a well-marked gular pouch. 
Synonymy and History—This bat was described by Ward (1891, 
pp. 747-750) from a single adult male specimen, taken within the 
museum building at Tacubaya, Federal District, Mexico. In 1893, 
H. Allen (1894, pp. 171-174, pls. 34, 35), apparently unaware of 
Ward’s description, redescribed the species as Nyctinomus macrotis 
nevadensis, from two immature specimens in the United States 
National Museum. J. A. Allen (1894, pp. 326-328), upon examin- 
ation of a fully adult male, raised the supposed form to full specific 
Lolisy = 
rank, and fixed typeship upon a specimen (no. 365607 U. S. Nation. 
odd00E 
Mus.) from ‘‘California.’”’ Miller (1902, p. 250) placed the name 
nevadensis of H. Allen under the synonymy of Nyctinomus depressus 
Ward. 
Distribution—tThis bat has been recorded from Mexico City, 
Mexico, and within the United States from Arizona, Nevada, Colo- 
rado, Iowa, and California, there being but one record for each of 
the states named, except for Iowa, where two specimens have been 
secured (Cory, 1912, p. 477; Gabrielson, 1916, p. 86). : 
In the cases of the Nevada and California examples of Nyctinomus 
depressus the exact localities of capture are not known. The Colo- 
rado example was taken at Grand Junction (altitude about 5000 
feet) (Warren, 1910, p. 286) ; and the Arizona specimen when secured 
was flying over a small meadow in the Chiricahua Mountains, at an 
altitude of about 9500 feet (J. A. Allen, 1895, pp. 245-246). Mexico 
