46 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vOL. 45 



and the teeth of the two animals, to judge by Blanford's description of 

 P. aureus, have certain pecuHarities in common. Dr. Abbott writes 

 that the female exactly resembled the male in color. 



GALEOPITHECUS PUMILUS sp. nov. 



(Plate VI, figure 3) 

 1900. Galeopithecus volans Miller, Proc. Biol. Soc. Washington, xiii, 

 p. 193, December 21, 1900. Not Lemur volans Linnaeus. 



Type. — Adult male (skin and skull), No. 104,448, United States 

 National Museum, Collected on Pulo Adang, Butang Islands, 

 December 17, 1899, by Dr. W. L. Abbott. Original number, 165. 



Characters. — Like Galeopithecus volans from the Malay Peninsula, 

 but much smaller. Skull with relatively shorter rostrum and broader 

 palate than in the mainland animal. 



Color. — Type : entire dorsal surface an intimate blending of 

 smoke-gray, blackish brown, and isabella-color, the gray clear and 

 pale on back of neck and sides of head, tinged with isabella-color on 

 posterior half of back, the brown predominating on legs, feet, and 

 greater part of membranes, the isabella-color most noticeable on 

 crown, along edge of principal membrane, and on distal half of 

 uropatagium. Except for the nearly clear gray area on neck and 

 cheeks the whole upper surface of the body is so mottled and clouded 

 that the exact color is very difficult to describe. A few small 

 flecks of nearly pure white may be detected on posterior edge of 

 thigh. Underparts isabella-color, rather darker than that of Ridg- 

 way on throat, chest, and belly, fading toward ochraceous-bufif on 

 under side of membranes and limbs. 



Skull and teeth. — As compared with the skull of an adult male 

 Galeopithecus volans (pi. vii, fig. 2 ; pi. viii, fig. 2, and pi. ix, fig. 2) 

 from the Rumpin River, Pahang, that of Galeopithecus pumilus 

 (pi. VI, fig. 3) is conspicuously smaller, the rostrum is relatively 

 shorter and the palate broader. In the larger animal the least 

 distance from orbit to anterior nares equals that between outer 

 edges of anterior molars, while in Galeopithecus pumilus it is equal 

 only to that from outer edge of one molar to inner edge of the 

 opposite tooth. The supraorbital processes are less developed in 

 the smaller animal, in which the greatest width of the process is 

 scarcely more than one-half that of the narrowest flat portion of the 

 interorbital region, instead of nearly equal to the entire width of this 

 area as in the larger species. Braincase shorter than that of 

 Galeopithecus volans, and occipital portion less distinctly outlined 

 when skull is viewed from the side. 



