362 ‘Mr. O. Thomas on 
To this the following new Central- American form would seem 
to be most nearly related :— 
Eptesicus chiriquinus, sp. 0. 
Allied to EH. andinus, but with longer forearm and legs 
and fluffer fur. 
Size, as gauged by skull, not exceeding that of H. andinus, 
but the forearm and legs are materially longer and the length 
of the trunk, as given by collector, is greater. Fur long, 
soft, fine and rather woolly, more so than in the rather 
straight-haired andinus ; hairs of back about 8 mm. in length. 
General colour blackish brown, the lighter ends to the hairs 
of the posterior back short and little conspicuous. Under 
surface practically as dark as upper, therefore darker than in 
andinus. Membranes black throughout. 
Skull about as in andinus, though the suMreantiea edges 
are more sharply angular. Canines of normal slenderness, 
while in andinus they seem to be always comparatively short 
and broadly conical; but how far the difference may be an 
effect of wear I cannot be sure. 
Dimensions of the type (the italicized measurements taken 
in flesh by collector) :— 
Forearm 46°5 mm. 
Head and body 70; tail 50; ear 14. Third finger, meta- 
carpus 43; first phalanx 16°5; lower leg and hind foot 
(c. u.) 28. 
Skull, greatest length 16°2; zygomatic breadth 11:1; 
intertemporal breadth 4; breadth of brain-case 7°83; palato- 
sinual length 7 ; front of canine to back of m? 6:3; front of 
p to back of m? 4:2. 
Hab. Chiriqui. Type from Boquete. Alt. 4000’. 
Type. Adult male. B.M. no. 3. 3. 3. 1. Original 
number 90. Collected 6th April, 1902, by H. J. Watson. 
Presented by Oldfield Thomas. 
This species is recognizable by its long forearm and legs as 
compared with H. andinus of Colombia. ££. propinquus, 
Peters, with which Mr. Osgood has shown . gaumert, 
Allen, to be synonymous, is also characterized by its much 
paler under surface and smaller teeth. The only other 
Central-American Lptesicus is KE. fuscus miradorensis, a 
member of the quite different serotenus group. 
Next we may take two closely allied species characterized 
by their large rounded and swollen skulls, very different from 
the rather low flattened skulls of the $.-American species 
hitherto known :— 
