Vol. XXVI, pp. 111-112 May 3, 1913 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



TWO NEW PHILIPPINE FRUIT BATS. 



BY N. HOLLIRTER. 



[Published by permission of the Secretary of the Smithsonian Institution.] 



Two new species of Pteropus have been found in the splendid 

 series of fruit bats collected in the Philippine Islands by 

 Dr. Edgar A. Mearns. 



Pteropus balutus ap. nov. 



Type from Balut Island, Serangani Group, south of Mindanao. U. S. 

 National Museum No: 1447(>0, skin and skull of 9 adult, teeth much 

 worn. Collected January 23, 190(i, by Dr. Edgar A. Mearns. Grig. 

 No. 6021. 



Diagnosis. — Somewhat intermediate in characters between Pteropus 

 speciosus and Pi. pumilus. Coloration of upperparts much as in pumilus, 

 but slightly paler; size approaching that of speciosus, but slightly smaller, 

 with noticeably shorter pollex. 



Color of tape. — Crown and anterior and posterior edges of mantle pale 

 orange-yellow; center of mantle (nape and shoulders) darker, more 

 ochraceous- tawny.* General color of back and rump wood-brown, a 

 mixture of hairs of auburn and avellaneous; brighter and more reddish 

 on hips. Throat buffy brown; breast, flanks, and anal region, ochra- 

 ceous-tawny; middle belly huffy. 



External measurements of type. — Collector's measurements: Length, 

 L90 millimeters; alar expanse, 855. From dry skin: Forearm, 117.5; 

 pollex, total length, c. u., 47.5; pollex metacarpal, 11.3; pollex first 

 phalanx, 25; second digit, metacarpal, 59; first phalanx, 13; second-third 

 phalanx, c. u., 12; third digit, metacarpal, 78.5; foot, c. u., 35- 



Skull "nil teeth. — One side of the braincase and the mandible are so 

 broken that only a few measurements are possible. The size and general 

 characters of the skull seem essentially as in Pi. speciosus, with the 

 rostrum more slender and interorbital breadth less. Front of orbit to 

 tip of nasal-, 18; least breadth of rostrum, 9.0; least interorbital breadth, 

 7.0. The teeth of the type are much worn, but appear to be as in 

 speciosus. 



* Ridgway : Color Standards and Color Nomenclature. 1912. 



26— Peoc. Biol. Soc. Wash.. Vol. XXVI. 1913. (Ill) 



