the point ; the foiirth vertebra from the base has much flesh about 

 it, which forms a small lump, — perhaps this is accidental. The 

 thumb is slender, but rather long. 



This species is remarkable for having long aad extremely slender 

 limbs, and for the transparency of its flying-membranes. I could 

 read this writing through the wing-membranes, moistened as they 

 were with the spirit, at a distance of more than a quarter of an inch. 



Vespertilio Meyeni. Vesp. intense rufescenti-fuscus, pilis ad 

 basin albescentibus ; corpore subtus cinereo lavato ; brackiis ru- 

 fescentibus ; rostro brevi, obtuso ; auribus subtriangulis, ad apiceni 

 rotundatis , postice emarginatis; tragis arcuatis, angustis, ad apicem 

 subacutis. 



unc. lin, 

 Longitudo ab apice rostri ad caudae basin .... 1 7 



:- cauda O 11 



antibrachii 1 1 



auris O 2į 



Alarum amplitude 6 6 



(2 9 \ 

 —^J ; the inner- 



most pair of the upper ja\v are larger than the external pair, and bifid 

 at the apex. The forehead is moderately arched ; the muzzle is 

 broad and but sparingly clothed with hairs, swollen at the sides ; 

 two longitudinal grooves mark the usual external boundaries of the 

 nasal bones ; and these grooves, at first shallow, become deeper be- 

 hind, where they are curved outwards towards the eyes, over which 

 is a small fleshy tubercle ; the upper part of the nose (between the 

 two grooves mentioned) is almost naked, but a few minute scattered 

 hairs are observed at the tip, and even in front, and along the edge 

 of the upper lip. The lower lip presents a very small triangular 

 naked patch at the tip. The nostrils are rather widely separated, 

 and open obliquely outwards. The ears are short, subtriangular, 

 have the extreme point rounded, and the posterior border slightly 

 emarginated ; on the inner side are three or four transverse rugae. 

 The tragus is narrow, subpointed, and has a notch in the middle of 

 the external margin. The wings are somewhat narrow, and have 

 the membranes of a very dark brown colour, the limbs being of a 

 dusky purpHsh red tint ; the membrane of the wing extends to the 

 base of the toes. The thumb is small ; the hind-legs shortish ; the 

 metatarsus short, being about equal in length to the toes, which are 

 very nearly eąual, the outer one being but a trifle shorter than the 

 others. The interfemoral membrane is by no means ample, brown 

 above and very pale beneath, where palg scattered hairs are observa- 

 ble, especially near the tail ; above, this membrane appears to be 

 naked, excepting at the base. The heel-cartilage is moderate, and 

 on the lower or outer side of this cartilage is an obtusely-angular 

 piece of membrane, about 2 lines in length and 1 line in breadth. The 

 tail has the extreme point free. 



I have attached to this and one of the foregoing species the nameb 



