60 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vOL. 45 



The sides, however, are a Hghter, duller ochraceous-rufous, and the 

 posterior half of back a deeper, more glossy black. The black area 

 is thus better outlined laterally, while the very sharp contrast with 

 the shoulders and neck throw it still more strongly in relief. Light 

 neck stripes grizzled, whitish cream-buff, slightly tinged with 

 tawny on posterior third, very sharply defined against the tawny 

 sides of neck and blackish median stripe. Crown and face a dull 

 grizzle of whitish and dark brown, nearly as pale as light neck 

 stripes. 



Skull and teeth. — The skull is in all respects similar to that of 

 Tiipaia tana. Teeth as in the related species, but molars larger. 



Measurements. — External measurements of type : total length, 

 375; head and body, 210; tail vertebrae, 165; hind foot, 46 (44). 

 External measurements of adult female from the type locality: 

 total length, 365 ; head and body, 215 ; tail vertebrae, 150; hind foot, 

 45-4 (42). 



Cranial measurements of type: greatest length, 59; basal length, 

 52; basilar length, 51; palatal length, 33; diastema, 5; breadth of 

 palate between middle molars, 8.6; least interorbital breadth, 14.8; 

 zygomatic breadth, 25 ; breadth of braincase above roots of zygomata, 

 20; maxillary toothrow exclusive of incisors (alveoli), 22 ; mandible, 

 39; mandibular toothrow exclusive of incisors (alveoli), 22. 



Specimens examined. — Two, both from Tana Bala. 



PTEROPUS GEMINORUM sp. nov. 



Type. — Adult female (skin and skull). No. 104,464, United States 

 National Museum. Collected on South Twin Island, Mergui Archi- 

 pelago, Januarv 28, 1900, by Dr. W. L. Abbott. Original number, 

 283. 



Characters. — Similar to Pteropns hypomelanns and P. lepidns, but 

 color darker and teeth smaller. 



Color. — Type : back dark hair-brown, sprinkled with silvery 

 whitish hairs, and with an indistinct brownish yellow wash along 

 edges of membrane. Neck russet, blackening laterally. Head 

 grayish ochraceous-buff. Underparts blackish, irregularly suffused 

 with russet and sprinkled with silvery whitish hair-tips. Ears, feet, 

 and membranes black. 



Skull and teeth. — The skull is in all respects essentially like that 

 of Pteropus hypomelanns from the Natuna Islands, though the palate 

 is usually less broad. Teeth as in Pteropus hypomelanns but 

 smaller, the difference particularly noticeable in the second upper 

 molar and first lower molar. 



