THE FAMILIES AND GENERA OF BATS. 
257 
Genus EUMOPS Miller. 
1878. Promops Dobson, Catal. Cliiropt. Brit. Mus., p. 414 (part). Subgenus 
of Molossus. Not Promops Gervais. 
1900. Promops Miller, Ann. and Mag. Nat. Hist., 7th ser., VI, p. 471, 
November, 1900 (genus). 
1906. Eumops Miller, Proc. Biol. Soc. Washington, XIX, p. 85, June 4, 
1906. 
Type-species. — Molossus calif ornicus Merriam. 
Geographic distribution. — Warmer parts of America, north to the 
southwestern United States ; Greater Antilles. 
Number of forms. — Ten species of Eumops are now recognized. 
Characters. — Dental formula : 
-2-. l.-(2)-4567 .1-1 1-1 2-2 1-1 
1 2 -. 1. - 2 -4567 ^2-2’ f 1 - 1 ’ 2 - 2 ° r 2 - 2’ 
3-3 
3-3 
=30 or 28. 
Upper incisors large, 
the slender shafts about 
one-half as high as that 
of canine, projecting for- 
ward and in contact 
with each other except 
at slightly diverging 
tips, the bases expanded 
posteriorly and almost 
or quite in contact with 
canines. Lower incisors 
subequal, bifid, much ex- 
ceeded in height by cin- 
gulum of canines, be- 
neath which they are 
crowded in a nearly 
semicircular row. Ca- 
nines large and strong 
but not peculiar in form, 
the upper with shallow 
longitudinal groove on 
anterior face and dis- 
tinctly flattened or con- 
cave on inner side, the 
lower with their bases almost in contact (less closely approxi- 
mated in the smaller species). First upper premolar (pm 2 ) small, 
but usually well formed and not deciduous (though absent in only 
known specimen of E. maurus) either crowded between canine and 
second premolar (pm 4 ) or forced outward from the tooth row when 
the two large teeth are in contact; posterior premolar normal, its 
25733— No. 57—07 m 17 
Fig. 46.— Eumops abrasus. 
Adult male. 
X 2. 
Surinam. No. 37456. 
