Mammals from British Guiana. 145 
Mesophylla Macconnelh, sp. n. 
Size a little greater than in Metophylla alba. Fur close 
and thick, hairs about 5 millim. long on the back. Colour of 
head and anterior back dull brownish white, darkening pos- 
teriorly to a brown very near Ridgway’s ‘ wood-brown.” 
Fur of body extending on to the basal half of the forearms 
and femora, and on to the wing-membrane between them. 
Nose-leaf of medium size, not crenulated or specially com- 
plicated ; the horseshoe narrow, free in front; lancet with 
well-defined median rib. Ears with a small rounded basal 
lappet on the inner edge, which above is markedly convex 
halfway towards the rounded tip; outer edge concave above, 
then convex to the antitragal notch; antitragus low, convex 
above, with a well-defined supplementary upright lobule 
near its anterior end; tragus pointed above, two projecting 
lobules on its external border, a peculiar thickened projection 
placed just in front of the tragus and almost duplicating it. 
Wings to the distal end of the metatarsus. Calcars short, 
curved backwards. Interfemoral membrane fairly broad, its 
narrowest point opposite the middle of the tibie. 
Dimensions of the type :— 
Forearm 30 millim. 
Head and body (taken in flesh by collector) 45; ear (do.) 
12°5; expanse (do.) 241; third finger, metacarpal 28, first 
phalanx 11°8, second phalanx 14; fifth finger, metacarpal 
27°5, first phalanx 8, second phalanx 8. The following 
supplementary measures are taken on specimen @, in spirit, 
its forearm being 27°5 millim. :—ear 11°3 ; tragus on inner 
edge 3; nose-leaf 9x 5°5; lower leg 10; ‘breadth of inter- 
femoral in centre 6°5. 
Skull (of type): greatest length 17-6; basal length 13:5 ; 
zygomatic breadth 10; interorbital breadth 4:5; mastoid 
breadth 9; palate length 8; front of upper canine to back of 
m 6'1. 
This curious little bat was at first supposed to be a second 
species of the genus Hetophylla, but further examination 
resulted in the discovery of so many points of difference, that 
I have felt compelled to describe it as a distinct genus. As 
being the most interesting animal obtained by Mr. Quelch, I 
have named it in honour of the naturalist who was generous 
enough to provide the means for Mr. Quelch’s expedition, 
and to give the whole of his mammal collection to the 
National Museum. 
