454 



measurements of fifty adult specimens representing all species 

 known : — 



Tall. — As in llonsettus; shorter than, rarely equal to, hind foot, 

 basal portion connected with underside of interfemoral by its dorsal 

 integument, tip freely projecting. 



Fv,r. — Notopatagium (membrane covering back from shoulders 

 to interfemoral) so thiulj^ haired as to appear practically naked; in 

 some specimens a distinct indication of a narrow line of hair down the 

 spinal tract ; pelvic region and central interfemoral often distinctly 

 though sparsely furred ; shoit closely adpressed hairs on proximal 

 third of forearm ; tibia naked ; underside of membrane along fore- 

 arm and between humerus and femur thinly covered with woolly 

 hair. Fur of body short, adpressed, as in Mousetius. Dorsum 

 beneath notopatag^inm densely fnrred. 



Cohitr. — The species are very uniform in colour (the difference, 

 if any, not well-marked) ; the individual variation, on the other 

 hand, is often conspicuous. General aspect of colour recalling the 

 sombre tinges of Eousetfus; darkest, generally bistre or blackish 

 bistre, 00 head, distinctly paler and more approaching hair-brown 

 on back of neck, palest and nearly always approaching drab or 

 fawn-drab on underside of body. But in the majority of indi- 

 vidnaLs the brownish colours are washed with a peculiar tinge of 

 olive, and very often this tinge lightens on the underparts and nape 

 of the neck to raw-umber or tawuy-olive or even light golden 

 tawny-olive ; these tinges often with an indefinable greenish hue ; 

 individuals which do not show some raw-umber or tawny-olive 

 admixture at least on the centre of the breast and belly are rare. 

 So far as the available material goes, sexual and age differences in 

 colour appear to be inconspicuous. 



Size.- — Of the twelve species known, one, I). t)tiiior, is similar in 

 size to a Rousttius (forearm SO mm.), nine to a small Fteroimx 

 (forearm 108-129 mm.), two, B. moluccemis and magna, to an 

 average Ptevopus (forearm 133-15;j mm.). 



Ramie. — From Celebes, Flores, and Timor in the West, througli 

 the Moluccas, to ISew Guinea, the Bismarck Archipelago, and 

 Solomon Islands, as far as the islands of San Christoval and Ugi, 

 but not extending to Australia. The range of the genus covers 

 exactly the Austro-Malayan subregion as understood by Wallace, 

 If not otherwise stated, the subjoined tabular view of the dis- 

 tribution of the species and primary groups of the genus is based 

 entirely on specimens examined by the writer : — 



