rtEuorvs toxganits. 1S7 



12-13 in malfs, l(i-17 in females, of bdly iy-15. Dibliibulioii of 

 fur as ill the allied species. 



Cohvv. — British Museum series, males and females, adults and 

 iinraatures (see list below): — Back, rump, breast, belly, and flanks 

 blackish or seal-brown, generally slightly darker and more glossy 

 on back and rump than on breast and belly, everywhere thinly 

 sjjrinkled with whitish hairs.- — Mantle l)uffy, sometimes very pale 

 (approaching cream-buff), sometimes distinctly washed with oehra- 

 ceous-buff or pale orauge-ochraceous ; sides of neck similar or 

 slightly deeper in tinge. Base of fur of mantle and sides of neck 

 varying in colour according to sex of individuals (see below). 

 Foreneck ochraceous-buff)- more or less strongly clouded with pale 

 russet and blackish seal-brown ; in many specimens the buffy 

 colour is purest (less mixed with darker tinges) on posterior portion 

 of foreneck, producing a more or less distinct narrow transverse band 

 separating dark breast from dark centre of foreneck ; in other 

 specimens the dark admixture extends over the whole of the lore- 

 neck. — Occiput, as far as a line between middle or front of ears, 

 similar to mantle or slightly mixed with brownish. Crown mottled 

 dark brown and bufty, in some specimens nearly uniform seal-brown 

 like back. Temporal region and cheeks similar to crown or more 

 uniform dark brown ; circumocular space in dark-headed s])e- 

 cimens often more or less strongly suffused with pale russet or buffy 

 russet, forming more or less distinct " spectacles " (cf. Pt. coiispi- 

 cillatus). Chin and throat blackish or seal-brown. 



Sexual differentiation.- — Hairs of mantle in adult males shorter, 

 more rigid and oily, in adult females longer, softer, more spreading. 

 In all males examined the hairs of the mantle and sides of neck are 

 uniform buS'y to extreme base, or with short blackish bases only 

 posteriorly in shoulder region : in females the fur of the mantle 

 and sides of neck has long concealed seal-brown bases. 



Mteisuremcnts. On pp. 190, 191. 



Specimens examined. Twenty-two, in the collections of the Paris 

 (three), U.S. Xational (two*), and British Museums, including the 

 cotypes of tlic species and of Ft.jiavieoJJis. 



liani/e. Fiji Is. (Taviuni, Ovalau, iloala, Totoya) ; Tonga 1«. 

 (Uea, Namouka, Tonga Tabu); Samoa Is. (Savage I.). The Tonga 

 and Samoa groups form the extreme south-eastern limits of the 

 range of the genus in the Polynesian region. 



Cofi/pe.<i in the Paris Museum. 



Habits. — Like many other species of the genus, Pt. tonga nus 

 appears sometimes on the wing in the early afternoon in full sun- 

 light, but as dusk comes on it becomes more and more plentiful, 

 and it is probably only those accidentally disturbed or specially 

 driven by hunger that come out before dusk. At the time of the 

 visit of the ' Challenger ' to Tonga Tabu (July, 1874) these Fruit- 

 bats were feeding on the bright red flowers of one of the indigenous 

 trees, and flowers would seem on the whole to form an important 

 proportion of the food of the species of Ptcropns ; they probably 

 * Xos. U-2i72, U-2\ir>, Xamouka, Ton-a Is. 



