Celebes^ Borneo, and the Philippines. 243 



This bat is probably the N. Celebes representative of the 

 southern B. hidens, from which it may be distinguished by 

 the distance between the dorsal origins of the wings, its 

 pointed ears, and different colour, notably the brown instead 

 of " golden-yellow " crown. 



Haepyionycteris, gen. nov. 



Index with a claw. Wings from the sides of the hairy 

 back, inserted behind at the junction of the first and second 

 toes. No tail. Hind limbs apparently very short. Inter- 

 femoral membrane obsolete, buried in thick fur. 



Dentition.— I. ^^, C. |, P. f, M. f x 2 = 28 or 30. 



Upper incisors large, touching each other and the canines, 

 shaped, when viewed in front, almost like those of Desmodus, 

 each with a long oblique cusp touching its fellow in the 

 middle line of the skull, but in section each is broadly trian- 

 gular, with a broad posterior basal ledge. Canines with a 

 large posterior secondary cusp about half as high as the main 

 cusp, and with a broad postero-internal basal ledge, but no 

 additional internal cusps ; its direction much more slanting 

 forwards than usual, as is the lower canine also, so that the 

 two cross each other nearly at right angles, instead of being 

 approximately parallel. First two premolars about as in 

 Cynopterus. Molars oblong in section and of a peculiar 

 cuspidate character, the lateral longitudinal walls to the usual 

 median groove broken up into several minute cusps, none of 

 which are at all specially lengthened. Below, the incisors 

 are practically obsolete, being minute and almost crowded 

 out * by the large canines, which touch each other in the 

 middle line, and each have an antero-internal and a postero- 

 external secondary cusp and a broad posterior ledge. 



It is difficult to say with certainty to what previously 

 known genus this remarkable form is most nearly allied. Its 

 peculiar canines to a certain extent recall those of Harpyia, 

 but this resemblance may be either accidental or due to their 

 common descent from the (presumably) cuspidate-toothed 

 ancestors of the Pteropodidse \. On the whole it may be 

 most conveniently placed near Xantharpyia and Boneia, 

 with which it shares certain external characters, an indical 

 claw, and the cheek-tooth formula of P. f , M . § ; but the 



* In the single type specimen one lower incisor only is present, the 

 other having fallen. 



t See P. Z. S. 1888, p. 473. 



