434 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVIII. 



Characters. — A member of the .subgenus Spedravi as defined Ity 

 Matschie. Similar to Pteropus hyponielanus Temminck, but dili'erent 

 in color; .skull with osseous orbital ring complete in old individuals; 

 teeth smaller than in 1\ hyi^omelanus. 



Color. — The skins were temporarily preserved in formalin, but the 

 colors have not been materially changed. Head blackish brown all 

 round but slightly paler on crown, with a few whitish hairs intermixed 

 above; uppei' side of neck and slioulders wood brown, becoming- 

 tinged with tawny posteriorly, where it ends abruptly in a straight 

 transverse line; remainder of upperparts grizzled Idackish. ITnder 

 side of body russet brown, becoming blackish brown on the sides; feet 

 and wing-membranes blackish. 



Skull and teetJt. — Save in the t,ype, which is 3"oimger, all of the 

 specimens have the postorbital and jugal processes united, completing 

 the osseous orbit of the eye. Except in this respect, the skull closely 

 resembles that of 1\ Jiypoinelanus from the Natuna Islands, but the 

 latter has the teeth slightly more robust. The same is true of P. 

 lepldus. The skull and teeth of 1\ eayayanus are decidedly smaller 

 than in Steere's specimens from Panay, which he called '"'' Pteropus 

 hijpoiiiclanitK."^ 



C'ranldl vwasttrements of the type, on adult male, from Cagayan Sulu Island. 



Measurement. 



No. 125289, 



U.S.N. M., 



type. 



Greatest length 



Basa 1 length 



Basilar length 



Median i)alatal length 



Palatal breadth ( between anterior molar.s) 



Zygomatic breadtli 



Least interorbital breadth in front of postorbital processes 



Least intenirtjital breadth behind postorbital processes 



Breadth lietwecn tips of postorliital jirocesses 



Greatest lireadth ol braiiiease above roots of zygomata 



Greatest deptli of l)rainease 



Oeci pi t ul dept h 



Greatest diptli of rostrum at middle of diastema 



Greatest lireadth of rostrum at middle of diastema 



Mandible 



Maxillary toothrow (exclusive of incisors) 



Mandibular toothrow (exclusive of incisors) 



Crown of first upper molar 



Crown of first lower molar 



63 



61.5 



59.5 



37 



11.3 



35 



8.2 



6.2 

 26.5 

 22. 5 

 18 

 13 



9 



11. ti 

 52 

 24 

 27.5 



5 



4.3 



External ineasureinents of tvell-made skin. 



