472 PHYLLOSTOMIUJE. 



less thickened antitragus ; general form of the nose-leaf also as in 

 V. spectrum, the horseshoe more equally developed all round and 

 projecting more in front ; front of the lower lip with a small wart 

 in the centre and a narrow transverse elevation on either side ; 

 chin divided by a narrow groove between two warts (Plate XXIV. 

 fig. 4) ; opposite the anterior extremity of the sternum the small 

 circular aperture of a glandular duct. 



Wings and interfemoral membrane as in V. spectrum ; but the cal- 

 caneum is comparatively shorter, and in the base of the interfemoral 

 membrane a rudimentary tail, scarcely one fifth of an inch in length, 

 may be discerned with some diflSculty. 



Fur much longer than in V. spectrum, especially on the upper 

 surface, thickly clothing the body above and beneath, but scarcely 

 extending upon the membranes ; the metacarpal bone of the thumb, 

 the basal half of the interfemoral membrane, and the legs are thinly 

 covered with short fur. Above dark brown, at the base and at the 

 extremities of the hairs whitish ; beneath greyish brown, the hairs 

 darker in the middle, paler at their bases and at their extremities. 



Upper middle incisors comparatively longer and narrower than 

 in V. spectrum, directed downwards and inwards ; outer incisors 

 very small, between the middle incisors and the canines ; thetwo lower 

 incisors chisel-shaped, indistinctly notched ; first ui>per premolar 

 quite different from that of V. spectrum, being verj^ small and 

 scarcely raised above the level of the gum (Plate XXIV. fig. 4 a) ; 

 the second lower premolar is also very small, and quite internal to 

 the tooth-row, not visible from without, the first and third pre- 

 molars closely approximated ; first lower premolar about two thirds 

 the size of the third premolar, which is comparatively larger than 

 the corresponding tooth in V. spectrum. 



Length (of an adult c? ), head and body 4", tail 0"-2, head l"-55, 

 ear l"-6, tragus 0"-45, nose-leaf 0"*65 x 0"*4, forearm 3"-35, thumb 

 1" ; third finger — metacarp. 2"-'3, 1st ph. l"-3, 2nd ph. l"-5, 3rd ph. 

 l"-3 ; fourth finger— metacarp. 2''-5, 1st. ph. l"-05, 2nd ph. l"-2 ; 

 fifth finger— metacar[j. 2"-8, 1st ph. l"-05, 2nd ph. 1"-15; tibia 

 l"-45, calcaneum 0"-95, foot 0"-95. 



Hob. Mexico; British Guiana; Brazil. 



This very remarkable species connects Vampyrm with Lophostoma, 

 Tylostoma, and Phyllostoma. With the species of Lophostoma it 

 agrees closely in the form of the skull and in the dental formula, 

 with Tylostoma in the form of the incisors and premolars, and with 

 Phylhstoma in the presence of a glandular opening near the anterior 

 extremity of the sternum. 



a. ad. sk. Rio de Janeiro. Earl of Derby [P.], 



(Figured in P. Z. S. 1861, pi. xviii.) 

 J. ad. sk. Rio de Janeiro. Earl of Derby [P.]. 



V. 5 ad., al. Brazil, Dr. Peters [E.J. 



