RESULTS FROM THE MAMMAL SURVEY. 655 



Pithecus durga, sp. n. 



A large Langiir resembling shortridgei and hralima, but recogni- 

 sable by its browner general colour and ochraceous whiskers and 

 under surface. 



Size and fur as in sJioHridgei and hralima. 



General colour yellowish drab above, whiskers and whole under 

 surface ochraceous (there are small spots of paler colouring on the 

 ears and temples). Tail as in the other two species. 



Skull quite as in shortridjgei. 



The body dimensions of the type are unfortunately not recorded, 

 but as the hind foot measures 190 mm. the other dimensions are 

 probably much as in shortridgei. 



Skull. — Greatest length, 117; basal length, 84; zygomatic 

 breadth, 87; braincase breadth, 65; breadth across orbits, 75; 

 interorbital breadth, 11 ; cheek teeth, behind the canines, 30. 



Habitat. — The original entry on the label was ' Cachar ' which 

 has been altered to ' Upper Assam '. A second specimen is labelled 

 Assam, while a third is marked ' Silhet '. I feel convinced that the 

 ' Upper Assam ' on the type label is incorrect and that dAirga is the 

 Langur of Lower Assam. 



%3e.— Adult male, B. M. No. 86.10.18.1. Presented to the 

 National Collection by Dr. Reid. 



If Blyth's ijileatus was an Assam, and not a Malayan animal, as 

 he thought, it probably was this species, but as I have already said 

 the name is now invalid in the genus. 



