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Bulletin American Museum of Natural History. [Vol. XXXVII, 



up on the back of the ears, and the coloration is lighter. The pelage of the 

 back is hair-brown at tip and base, whitish in the intervening portion; 

 whereas that of the under surface is drab at the tip, grayish-white subtermin- 

 ally, and the basal half deep mouse gray. The membrane of the wings is 

 blackish brown. 



Represented in the collection by only a single specimen, secured in a 

 house at Faradje. 



26. Hipposideros langi sp. nov. 

 Text Figs. 4-6, pp. 435-437. 



The hair all over the body of this large leaf-nosed bat is exceptionally 

 long and fluffy, for the most part dark brown, but becoming lighter and 

 grayer just before ending in the blackish tips. The broad wing membranes 

 are likewise dark brown, and the short tail makes up only about one-fourth 

 of the total length of 4.45 inches (113 mm.); 16 inches is the extent of the 

 wings. 



More unusual than the complex nose-leaves are the curious eversible 

 pouches (Fig. 4, p. 435), lined with long stiff hairs, which adorn the forehead 

 in both sexes, though they may be concealed by the surrounding fur. These 

 are found in several related species, like H. gigas. But the male of H. langi 

 has another much larger pouch between the penis and anus, with glandular 

 skin producing a strong odor, which might perhaps be mistaken, when 

 evaginated, for a scrotum. As a matter of fact, however, the testes are 

 placed wide apart, lateral to the penis, and covered by ordinary hairy skin. 

 The pouch can be turned out after death by pressure on the surrounding 

 skin, and exposes its stiff rufous hairs as shown in Fig. 6 (p. 437). Though 

 lacking in the female, it is represented perhaps by the longer hairs arising 

 in front of the vagina (Fig. 5, p. 436). 



The frontal pockets are already well developed in half-grown young, 

 which like the adult males show rudiments of the two teat-like processes 

 found close together in the pubic region. The latter are especially long in 

 adult females (Fig. 5) but not connected with mammary glands. Possibly 

 these appendages are sucked by the young and aid the mother in carrying 

 them. 



Very seldom is this bat seen flying about at night, perhaps because of a 

 dislike for open spots; and yet it is not rare, sometimes roosting in parties 

 of a dozen. According to native informants they hang in the dense foliage 

 of trees and bushes, but at Avakubi we found a large hollow tree in the rub- 

 ber plantation tenanted by them. Its cavernous trunk opened only near 

 the ground; and standing in this aperture, one could hear the muffled beat 



