
1891.] Zoology. 747 
from base to tip. Outer incisors simple, conical, inclined parallel to 
their respective inner mates, separated from canines by about .75 mm. 
Lower incisors tri-lobate, evenly spaced. Upper canines long, simple, 
slightly recurved. Lower canines straight, with basal cusps on forward 
edge only. First upper premolar interior to tooth line, visible from 
the exterior. Second upper premolar longer than any of its corre- 
sponding molars. 
A prominent conical excrescence is on the lower gum, opposite the 
space between the premolars, in front of which the point of the upper 
canine passes. Two much less prominent excrescences are on the upper 
gum immediately above this lower one. Type No. 527 &, Las Vegas, 
Vz., Feb. 19, 1891. Collectors, H. L. Ward and C. M. Teran. 
Vesperugo verecrucis appears to be most closely related to V. georgi- 
anus ; therefore I append a comparative table of measurements : 
2 
ee Sol b a t od S 
oi ga sé as aa 2 
shee PE pe Fe. & 
V. verecructs. Roe: Se SS on 
527. % 37:5 3°. ST, 23.5 56: aiz. a 
528. Q@ 38.5 360. 32. 14. 55: 21%5- coholic specimens i 
b20: D 37e 3k 30r I3 57 tO e Eer = ba 
O 94. 3a. 30 eee Si 207 Exploradora. 
S 
i bh Soom Fr aeee 
— er 46. p gb. XB Ot. -2g7- > Bee ios ie. N 
Smallestindividual} 47, 38.5 33.5 15.5 56. 219-) imime 
From this table we see that, with but a single exception, —i.e., third 
finger, —the smallest measurements given by Dr. Allen of georgianus 
exceed the largest measurements of verecrucis. Were this the only 
difference found, I should probably consider my specimens as repre- 
senting a smaller southern variety ; but taken in consideration with 
difference of color pattern, the dorsal hairs having three and some 
even four distinct bands of color, instead of but two, as georgianus is 
described, the nakedness of the legs, less extent of hair on interfemoral 
membranes, etc., an apparent difference in the form of the ear, and 
slight differences in the teeth, lead me to also consider this difference 
in size as a characteristic of the species. 
NYCTINOMUS DEPRESSUS, sp. nov.—For about a year I have been 
aware of the existence in this museum of an apparently undescribed 
species of Nyctinomus, an adult male taken within the museum building, 
I have vainly endeavored to obtain other specimens of this species, but 
