VOL. XIX, PP. 61-66 MAY 1,1906 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



SEVEN NEW MALAYAN BATS. 



BY GERRIT S. MILLER, JR. 



By permission of the Secretary of the Smithsonian Institution. 



Among the Malayan bats in the United States National Mu 

 seum are the following seven species that have not hitherto 

 been described. All but two of them were collected and pre 

 sented by Dr. W. L. Abbott. 



Cynopterus princeps sp. nov. 



Type. Adult female (skin and skull). No. 141,235, United States Na 

 tional Museum. Collected at Mojeia River, Nias Island, west Sumatra, 

 March 10, 1905, by Dr. \V. L. Abbott. Original number, 4020. 



Characters. Slightly larger than the Javan Ci/nopterus titthaecheilus ; color 

 not as bright; skull with shorter rostrum ; cheekteeth heavier, with more 

 squarish crowns, the last premolar and first molar of lower jaw with small 

 but distinct median cusp. 



Color. Type: Upperparts a peculiar brown intermediate between the 

 wood-brown and hair-brown of Ridgway but darker than either, the crown 

 slightly darker than back ; individual hairs pale isabella-color at base. 

 Sides of neck raw-sienna, this color extending across throat but becoming 

 duller beneath, where the fur is sparser. Underparts elsewhere broccoli- 

 brown with a faint yellowish tinge along sides. Ears and membranes 

 blackish, unmarked. 



Skull and teeth. The skull rather closely resembles that of Cynopterus 

 titthgecheilus, but the rostrum is distinctly shorter and the mandibular ramus 

 is deeper. Cheekteeth heavier and more squarish than those of the Javan 

 animal, the crown of the first and second lower molar with a low but dis 

 tinct terete cusp about .3 mm. in diameter rising from crushing surface near 

 middle. 



Measurements. Type : Head and body, 143 ; tail, 10 ; tibia, 30 ; foot, 

 20.5; forearm, 84.4; thumb, 35.9; second finger, 61.4; third finger, 143 ; 

 fourth finger, 112; fifth finger, 110 ; skull, greatest length, 38.2; condylo- 

 basal length, 36.4; basilar length, 32.6; palatal length, 20.2; zygomatic 

 breadth, 25.4; breadth of braincase, 15.6; interorbital constriction, 6.7; 

 postorbital constriction, 5.8 ; mandible, 28.8 ; depth of mandible at front 

 of anterior molar, 3.6 ; maxillary toothrow exclusive of incisors (alveoli), 

 12.2 ; mandibular toothrow exclusive of incisors (alveoli), 13.8. 



14 PKOC. BIOL. Soc. WASH., VOL. XIX, 1906. (61) 



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