28o The Mammals of Colorado 
on a building in the town. The building was a two story 
brick one with a flat roof, and had iron shutters at each 
window, intended to be closed in case of fire, but usually 
fastened back against the side of the building. Going to 
the roof and looking over, a number of bats could be seen 
behind one of the second story shutters, and one or two 
behind others. How to get them was the question, and it was 
solved by tying three fish hooks together, and to the end of 
a line, and then Frey went fishing while I held the bag, in 
this case a big pocket handkerchief. The fisherman proved 
an expert and hauled up bat after bat; not one got away 
from behind that shutter, though one or two did from others. 
When the game had been chloroformed and counted, there 
were twenty-one Brown Bats and four Mexican Free-tailed 
Bats. Of these twenty-one Brown Bats twenty were females 
and only one was a male. One of the females had a naked 
blind young one clinging to its body. This was on July i6th. 
The specimen noted under distribution as being taken at 
Douglas Spring was captured June 24th, and contained a 
single good-sized embryo. 
Eptesicus pallidus( Lat. pale). Young's Bat 
Eptesicus palUdus Young, Proc. Acad. Nat. Set. Phila., pp. 
408-409 (1908). 
Type locality. — Boulder, Colorado. 
Measurements. — Total length, 4.9 ; tail vert., 1.95 ; hind foot, 0,45 ; 
forearm, 1.9. 
Description. — Brownish ashy above, basal half of hairs fuscous; 
below pale silvery gray, with basal half of hairs fuscous. The colors 
are very decidedly paler than those of any specimen of E. fuscus 
in my collection, though those latter vary considerably among 
themselves. 
The skull is identical with that of E. fuscus. 
Genus NYCTERIS 
Nycteris Borkhausen, Der. Zool. (Comp. Bibliothek. gemn. Kentn 
f. a. Stande, pt. xxi.), Heft iv.-vii., p. 66 (1797). Type, Vesper- 
tilio noveboracensis Erxleben = N . borealis. 
