Mr. R. F. Tomes on the genus Keiivoula. 475 



defined naked triangular space in front. The ears are broad, with 

 the outer margin so much developed near the base as to form a com- 

 plete lobulus, which however is not separated from the upright part 

 of the ear by a notch or hollow, as in some species. The ear may, 

 indeed, be described as extending along the side of the face for some 

 distance, and in a line with the corner of the mouth, not as a narrow 

 strip of membrane, as in the generality of species, but ascending at 

 once from its most anterior point, and forming what is called the 

 ear-conch. Its inner margin is very convex, and curves off to the 

 tip of the ear, which terminates in an angular point not very acute. 

 In all the species there is a notch or hollow of more or less extent 

 in the outer margin, vei-y near to the tip. 



The ear bears great resemblance to those of Furipterus and Na- 

 talus, especially to those of the latter. The tragus is long, nearly 

 three-fourths the length of the ear, excessively narrow and pointed, 

 and a little curved outwards. Its outer margin near the base is 

 furnished with a projecting point or tooth. 



The tail is rather long, in some species as long as the head and 

 body. The wing-membranes extend to the base of the toes. The 

 feet are of medium size ; and the toes occupy a little more than 

 half the length of the foot. The thumb also is moderate ; and tlie 

 basal phalange, which is enclosed in the membrane, is shorter than 

 the remaining part. 



The membranes and ears of all the species are more or less dia- 

 phanous, and rather conspicuously marked with glandular dots ar- 

 ranged, on the former, in lines. 



The fur is of a fine woolly texture, in the Asiatic species without 

 lustre ; but in the African ones the hairs have shining tips. 



The skull does not, as might have been expected, exhibit any of 

 those peculiarities which are observable in the high-crowned genera, 

 such as Furipterus, I^atalus, and Miniopteris. In its general ap- 

 pearance it somewhat resembles those of Vesp. mystacinus and 

 Fesp.Nattereri, but the central region is much more inflated — indeed 

 in the African species almost as much so as in Furipterus. Besides 

 this point of difference, the following peculiarities require mention. 

 The facial region is very much depressed, and also compressed ; and 

 the notch in the fore part of the palate is much deeper than in any 

 other genus, but varies considerably in the different species. This 

 appears to be due chiefly to the straightness of the intermaxillary 

 bones, their development in a forward direction affording space for 

 the incisors to range in a line with the other teeth, instead of being 

 placed more or less across the opening between the two canines. 

 This is best seen in the K. picta. 



The bony palate extends nearly as far back as to the condyloid 

 fossa, and narrows considerably after leaving the posterior boundary 

 of the molar range. In no other Bat which I have examined has 

 the palate extended further back than to the middle of the zygo- 

 matic arch. 



Dentition. — In. ^ ; Can. {^ ; Premol. ^^i ; Mol. 5^5=^- 



The upper incisors are slender, conical, and pointed, with a slight 



