Vol. XIX pp. 49-50 May i, 1906 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF AN APPARENTLY NEW SPECIES 



OF MONKEY OF THE GENUS PRESBYTIS 



FROM SUMATRA, AND OF A BAT 



OF THE GENUS DERMANURA 



FROM MEXICO. 



BY I). G. ELLIOT, F. R. S. E. 



The specimens here described came into the possession of the 

 Field Museum through different channels. The Presbytis was 

 purchased from a dealer in Sumatra, and the Dermannra was 

 collected by Messrs. Heller and Barber in Mexico. 



Presbytis fusco=niurina sp. nov. 



Type locality. — Telok Belong, south Sumatra. Type No. 14,803. 



General Characters. — A long occipital crest, inclining backward ; face, 

 hands and feet white or flesh-colored. 



Color. — A narrow line across foreliead running backward along side of 

 head above ears and widening as it goes, to occiput, where it joins the 

 long central occipital crest; entire upper parts of body, outer side of arms 

 from wrist, and upper side of tail dark mouse gray tinged with brown ; top 

 and sides of head beneath the dark line, cheeks, throat, under side of 

 body, inner side of arms, hind legs from hips on both inner and outer sides, 

 face, ears, hands, feet, and tail beneath white. 



Measurements. — Total length (dried skin), 1280; tail, 600. This can only 

 be considered an approximate measurement. Skull : occipito-nasal length, 

 95; Hensel, 61; zygomatic width, 71; intertemporal constrictions, 45.5; 

 breadth across oi-bits, 60 ; width of braincase, 56 ; width of orbit, 23 ; 

 height of orbit, 24.5 ; height of nasal aperture, 13 ; breadth of nasal aper- 

 ture, 9 ; length of nasals, 9; palatal length, 30; breadth of palate inside 

 m^, 19 ; length of upper molar series, alveolar border, 24; length of upper 

 molars, 16; length of upper canines, 15; length of mandible, 59; length 

 of lower molar series, 29 ; length of lower molars, IS; length of lower 

 canine, 12.5. 



This rather strangely colored Presbytis belongs apparently to the group 

 which contains P. thomasi and P. hosei, but is at once distinguished from 

 10— Proc. Biol. Soc. Wash., Vol. XIX, 1906. (49) 



