rTEROPV'S PFI.TCWENSIS. 173 



the hjipomelaims group. It is, in fact, open to question wLetlior 

 Pt. admiral'datum ought to be considered a peripheral species of the 

 liypomelatms type with strong leanings to the Polynesian group, or 

 rather incorporated in this latter. — The species of the Austro- 

 Malayaii and Australian Pt. conspicillafvs group (P. clirysauchen, 

 conspiciUatus, ncularis) are almost precisely similar in colour to the 

 typical members of the marlamius group(compare e.g. Pt.chnjiauchen 

 ^vith Pt. tongainis) : any close relationship between these two sections 

 of the genus is, in view of the difference in dentition, altogether 

 improbable. 



17. Pteropus pelewensis. A'. And. 

 Pteropus heraxulreni (pt.), Dobson, Cat. Chir. B, M. p. 63. 



Pteropus keraudreni {nee Pt. kevaudren, Q. 4' G.), var. a (pt.), 

 Dobson, Cat. Chir. B. M. p. (>5 (1878: Pelewls.). Yar. aa (pt.), 

 Trouessart, Rev. ^ Mat/. Zuol. (3) vi. p. 203 (ls79 : Pelew Is.). 



Pteropus insulavis (pt., nee Hombr. Sf Jacq.), Trouessart, Cat. Mamm. 

 i. p. 83 (1897: Pelew Is.). 



? Pteropus (Spectrum) mariannus (pt., nee Desm.), MatKchie, Mega- 

 chir. p. 27 (excl. figs.) (1899: Pelew Is.); Trouessart, Cat. 

 Maynm., Siippl. p. 53 (1904 : Pelew Is.). 



Pteropus pelewensis, E. Andersen, Ann. ^- Mao. N. II. (8) ii p 364 

 (1 Oct. 1908: Pelewls.). 



Diarjnosis. — Allied to Pt. admiralitatum (supra p. 144), but with 

 much smaller orbits, narrower rostrum, weaker dentition, and shorter 

 fur. Colour of fur approaching that of Pt. admiralitatum. Forearm 

 shorter; 113-5 mm. Hab. Pelewls. 



Skidl and teeth. — General size of skull nearly as in Pt. admirali- 

 taiwn, but rostrum considerably narrower and orbits smaller: 

 maxillary width externally across m'-m' 14-8 mm., against 1(5-17 



in Pt. admiralitatuni ; orbital diameter 11 mm., against 12-12-5. 



Structure of teeth as in the allied species, but dentition on the 

 whole slightly weaker, p^ and m^ markedly smaller ; see measure- 

 ments, p. 176. 



Fur. — Length of fur as in Pt. hijpornelanus, much shorter than in 

 Pt. admiraUtatum : on back 9-11, mantle 1:2-14, belly 13-14 mm. 

 Distribution of fur as in the allied species. 



CWoH?-.— Type, cJ ad. skin, teeth much worn. — Back and rump 

 dark brown approaching seal-brown, conspicuously washed with 

 vandyck-brown on sides of back, humeri, and thighs, and thinly 

 sprinkled with silvery greyish-white hairs. — Breast, belly, and 

 flanks a dark shade of Prout's brown, everywhere thickly mixed 

 with shiny silvery white or buify-white hairs. — Mantle and sides 

 of neck light yellowish buff, individual hairs uniform from base to 

 tip or, in shoulder region, with extreme base blackish. Foreneck 

 similar to breast. — Occiput similar to mantle, but somewhat clouded 

 with brownish. Crown and sides of head mixed buff'v and brownish 

 sprinkled with some highly glossy silvery grey hair?. Chin and 

 throat blackish thinly sprinkled with silvery grev. 



