in ■vvidth ; they extend along tlie hind-leg to the heel only ; the tliumb 

 is comparatively long; the hind-foot very large, and having the toes 

 equal, excepting the outer one (according to the uatural position of 

 the foot, but the toe correspondmg to the inner toe in most other 

 animals), \vhich is rather shorter. The interfemoral membrane is 

 mcderately ample, and does not extend quite to the tip of the tail, 

 a poition of about one line in lengthbeing free. The heel-cartilage 

 is very long. 



In the large size of the hind-foot the present species approaches 

 the V. Hasseletii of Temminck's Monograph, but it does not appear 

 that that species has the wings encroaching on the back as in V, ma- 

 crotarsus ; the ears are much larger, the thumb also larger, tail 

 longer, &c. The proportious, as compared with tliose of M. Tem- 

 minck's V. macrodactylus and V. brachypterus, difFer considerably, 

 though both these species have the hind-foot large ; the larger ears, 

 longer thumb, and more ample wing will serve to distinguish it. 



Vespertilio pellucidus. Vesp. vellere longo, pallide rvfo, cor- 

 pore subtus cinerascenti-albo ; alis fuscis, pellucidis ; auribus mag- 

 nis, apice acutis, postici emarginatis ; trago elongato, attenuato ; 

 rostro producto, depresso, subacuto. 



unc. lin. 

 Longitudo ab apice rostri ad caudse basin. ... 1 8 



caudce 1 9^ 



antibrachii I 3 



auris O 7 



Alarum amplitudo 9 6 



The fur in this animal is long, of a delicate pale rufous on the upper 



parts of the body, but slightly tinted with grey next the skin ; the 



2 2 



under parts are ashy white. The incisor teeth are as usual —7- ; the 



two innermost of the upper jaw are widely separated, long-pointed, 

 and resemble canine teeth ; the outer pair are very small. The forehead 

 is considerably arched ; the muzzle produced, pointed and depressed, 

 and has a slight concavity above ; the nostrils are \videly separated, 

 pierced laterally, and have a slight depression between them ; the tip 

 of the muzzle is naked. The lo\ver lip has a small, smooth, naked 

 space at the tip. The ears are of a very pale brown colour, large, trans- 

 parent, pointed, and strongly emarginated behind ; the tragus is very 

 long and slender (its length being about A'i lines, and width at the 

 base less than 1 line), and decreases gradually in \vidth from the 

 base to the point ; close to its root, externally, is a slightly promi- 

 nent angle. The -vvings are large and supported by very delicate 

 and slender bones, very transparent, and extend slightly on to the 

 toe of the hind-foot. The hind-legs are long and slender ; the foot 

 small ; the metatarsus shorter than the toes, -vvhich are slender and 

 very nearly eąual, if we except the one to 'vvhich the \ving is slightly 

 attached, which is distinctly shorter than the ręst. The interfemo- 

 ral membrane is ample, and presents a few scattered hairs : the heel- 

 cartilage long. The tail is long, and enclosed in the membrane to 



