566 On Neotropical Bats of the Genus Eptesicus. 
Dimensions of the type (the italicized measurements taken 
in the flesh) :— 
Forearm 45°5 mm. (range in adults from about 43). 
Head and body 67 ; tail 44; ear 18. Third finger, meta- 
carpal 42, first phalanx 15 ; lower leg and hind foot (c. u.) 25. 
Skull: greatest length 17:3; basi-sinual length 13°6 ; 
zyzomatie breadth 12: 5; intertemporal breadth 3°9; breadth 
of brain-case es palato-sinual leneth of front of canine to 
back of m® 6°7 ; ‘front of p* to back of m? 4°5. 
Hab. Corrientes. Type from Goya, on the Parana. Alt. 
600'. 
Type. Adult female. B.M. no. 98. 3.4.6. Original 
number 18. Collected 16th December, 1895, by R. Perrens. 
Presented by Oldfield Thomas. Hight specimens. 
The combination of large size ‘and comparatively pale 
colour will at once distinguish this species from any other in 
S. America. 
Also in the Argentine, just to the south of Goya, there is 
another species which in size is at the opposite pole from 
E. argentinus, being about the smallest species in 8. 
America :— 
Lptesicus fidelis, sp. n. 
Size very small, slightly smaller even than EZ. diminutus 
and punicus. Fur ‘fairly long, hairs of back about 7 mm. in 
length ; edges of wing- -membranes hairy for about half a 
centimetre out from the body, in contrast to LE. argentinus, 
where there is even a naked edging on the body itself; inter- 
femoral membrane and base of tail also hairy for about a 
quarter its length. Tail very short, even relatively to the 
small size of the animal; its extreme tip only exserted. ars 
and tragus small, the inner edge of the latter slightly con- 
cave. General colour, so far as can be seen ina spirit- 
specimen, brown, not black, the ends of the hairs a little 
paler ; under surface brown, with whitish tips to the hairs ; 
membranes brown throughout. 
Skull low, smooth, unridged, with comparatively broad 
intertemporal region and scarcely perceptible sagittal and 
Jambdoid crests. Canines proportionally rather short. 
Dimensions of the type (measured on the spirit-speci- 
men) :— 
Forearm 34 mm. 
Head and body 50; tail 32; ear 12°5.; tragus on inner 
edge 4:2; third finger, metatragus 29, first phalanx 11; 
lower leg and hind foot (c. u.) 19°5. 
