406 DMJIALLONUKID^. 



small pores collected in two circular slightly elevated patches, in 

 females by a single large orifice (Plate XXI. figs. 1, 1 a). 



First toe very thick, with long curved hairs on the outer side. 

 This toe is separated from the others like a thumb, and is probably 

 opposable to them. Wing-membrane from the middle of the tibia 

 and from the sides of the back near the spine. A deep axillary pouch 

 is formed, in both male and female, by an extension of a fold of skin, 

 derived from the thick integument covering the breast and sides of 

 the body, to the inferior surface of the humerus, and, longitudinally, 

 to the femur. In the anterior part of this pouch, on the side of the 

 body, behind the axiUa, the mamma is placed. 



Tail very thick and long, projecting more than half its length be- 

 yond the short interfemoral membrane. 



Integument very thick and almost quite naked, with strong pli- 

 cations along lines of flexure and extension ; the back is quite naked, 

 but a collar of very short thinly spread hairs nearly surrounds the 

 neck. 



Upper incisors strong, placed close together, their extremities con- 

 verging inwards ; the single upper premolar large and tricuspidate ; 

 first lower premolar minute, wedged in in the space between the 

 canine and second premolar, which are close together ; the last upper 

 molar less than half the size of the second molar. 



Length, head and body 5"-3, tail 2"-6, head l"-8, ear l"-2, tragus 

 0"-15, forearm 3"-l, thumb 0"-8, third finger 7", fourth finger 5"-6, 

 fifth finger 3"-l, tibia l"-4, foot l"-05. 



Hah. Malay Peninsula (Pinang ; Singapore) ; Sumatra ; Java ; 

 Borneo. 



This most remarkable species, the only known representative of 

 the genus, differs altogether from all the species of this group inha- 

 biting the Eastern Hemisphere, and appears to be most closely allied 

 to some of the species of the genus Molossus, which is limited to 

 America. In no species of Bat is the giilar glandular apparatus so 

 greatly developed and so different in structure according to sex, and 

 in none also is the integument of the body so remarkably thickened 

 and devoid of hair. The nursing-pouches are also peculiar to this 

 species, and are probably absolutely necessary for the preservation of 

 the young, which could scarcely otherwise succeed in maintaining 

 its hold on the naked body of the mother during flight. It is inte- 

 resting to find these pouches developed in both male and female ; for 

 their presence in the former suggests the idea that, where two j'oung 

 are born together, the male may relieve the female of the charge of 

 one of them, as I have shown is most probably the case in Cyno- 

 nycteris grandidim and in Cynopterus riiarginatus (vide antea, 

 pp. 79 & 83). 



a. ad. sk. N.W. Borneo. Mr. H. Low [C.]. 



h. ad. sk. Malacca. Purchased. 



c. 2 ad., al. Borneo. Ijords of the Admiralty. 



d. (S ad., al. Borneo. Purchased. 



e. skull of h. 



f. skeleton. Borneo. Sir E. Belcher [C,]. 



