338 University of California Publications in Zoology {Vou.17 
MEASUREMENTS IN MILLIMETERS OF THREE EXAMPLES OF EUDERMA MACULATUM 
(J. A. ALLEN) 
= 2 
Fe B E 33 
=h = s s Es 
Mus £8 ms ra S Fa ae 
no. Sex Date i ape = <= £ Ki 
1196* ? Oct.1; 1907s" ese) Bee 18.0 45:0) ‘a2 “eS 
1225457 diad. Sept., 1903 107.0 47.0 196 9.8 496 188 104 
3920 
By a March, 1890 110.0 50.0 21.0 98 500: 19.0 10.9 
1From Mecca, Riverside County, California. 
2U. S. National Museum: from Mesilla Park, New Mexico. 
3 Amer. Mus. Natural History: from Piru, Ventura County, California. 
American Museum of Natural History. Dr. C. Hart Merriam (in 
Miller, 18976, p. 49) gives the added information that the type was 
in reality taken at the mouth of Castae Creek, in the Santa Clara 
Valley; this is eight miles from Piru, in the same valley, but across 
the line in Los Angeles County. 
Because of its general resemblance, as regards size, and the form 
and size of the ears, to Histiotus of South America, Dr. J. A. Allen 
placed the bat in that genus. H. Allen (1892, pp. 467-470) placed 
the bat in the new genus Huderma, separating it from Histiotus upon 
the presence of a minute first upper premolar, absent in the latter 
genus. 
Distribution.—The spotted bat is known from only four localities, 
in each of which but a single individual has been secured. The 
localities and dates are as follows: near Piru, Ventura County, Cali- 
fornia (see above), the type, March, 1890 (J. A. Allen, loc. cit.) ; 
Mecea, Imperial County, California, an individual found dead in 
the overflow from a railway watering tank, October 1, 1907 (J. Grin- 
nell, 1910, p. 317) ; Mesilla Park, New Mexico, an individual found 
dead in the biological laboratory of the New Mexico College of Agri- 
cultural and Mechanical Arts, in September, 1903 (Miller, 1903, 
p- 165) ; Yuma, Arizona, one reported by Herbert Brown (Stephens, 
1906, p. 264). (See map, text-fig. O.) 
Dr. C. Hart Merriam (in Miller, 1897b, p. 49) states that while 
in Vegas Valley, Nevada, he was told of the occurrence there, during 
the summer, of a very large bat ‘‘with ears like a jackass and a white 
stripe on each shoulder.”’ 
Specimens Examined.—The writer has seen but one example of 
Euderma maculatum from California: Mecca, Riverside County, 1. 
Natural History Nothing is known of the habits of this species. 
