170 = Ona new Stenodermatous Bat from Trinidad. 
But not only has Vampyrops pusillus (as it should be called) 
no cleft, but Mr. Dobson’s ‘ Chiroderma bidens” is also without 
it; and since there appears to be no generic importance in the 
other characters of Chiroderma as mentioned by him, I propose 
that the two species just referred to should be shifted to Vam- 
pyvops, which would then contain all the members of this 
group of bats with oblique incisors and perfect nasal regions. 
The genera to which the new Trinidad bat is most nearly 
allied may therefore be arranged as in the following synop- 
sis :— 
A. Palate continued some way behind molars. 
a. Middle upper incisors vertical .......ceseseseees 1. Artibeus. 
b. Middle upper incisors oblique. 
a’. Nasal region not cleft ........2. coro onan f 2. Vampyrops. 
b’. Nasal region cleft ............ Mo dgs4 Goad p AS 3. Chiroderma. 
B. Palate not continued backwards behind molars. 
: m. 1 
c. Palate emarginate to level of ——. Crown not un- 
usually elevated ......ccssccscrsens aedrere teat Xe 4, Stenoderma. 
d. Palate emarginate to level of ™ 3° Crown much 
elevated above muzzle ...... 4 auvelsteless sielsiale rare 5. Ametrida*. 
The enlarged genus Vampyrops may then be arranged as 
follows :— 
A. Molars . 
a, Forearm about 60 millim. Front of ca- 
m. 2 
nine to back of —— 12-13 millim....... 1. V. vittatus, Ptrs.t 
b. Forearm 52 millim. .......... SOA O 2. V. infuscus, Ptrs. 
c. Forearm 35-45 millim, Front of canine to 
back of = about 8 millim. .......... 3. V. lineatus, Geoff. 
B. Molars = 
5 2 = m, 2 
d. Incisors = Front of canine to back of —— 
STAMINA noes tats cyeeas eo iessiecaterope @iepeters 4. V. Caracciole, Thos. 
m. 2 
x 2 O 
e. Incisors ;. Front of canine to back of 
GA malts os aos vel 6 }05, 2% bcheleve.« pO» 2 tOloens, Obs, 
C. Molars > 
f. Forearm 35 millim. ........ eeitiots lations 6. V. pusillus, Wagn. 
* From which Spheronycteris, Peters (MB. Ak. Berl. 1882, p. 987), is 
very doubtfully separable. 
+ With which V. Heller?, Ptrs., is synonymous; see Alston, Biol. 
Centr.-Am., Mamm. p. 48 (1879). 
