THE LANGURS. 



137 



The skulls present a good deal of variation in the form of 

 the intenial orbital angles of the frontal, and in the occipital, 

 bones. 



DistrilDution. — Sumatra : Padang, Indrapoera, Bencoolen, Pa- 

 lembang, and the Lampongs. 



Habits. — The " Simpai/' as the Malays call this Langur, is 

 very abundant in Sumatra, where the present writer has ob- 

 tained it both in the north of the Palembang Presidency and in 

 the south of the Lampongs. It is undoubtedly in part to this 

 species that Dr. Wallace refers in his " Malay Archipelago," 

 when, at Lobo Raman, he says that they frequented the trees 

 overhanging the guard-house in which he was staying. " Two 

 species of Semnopithecus were most plentiful — Monkeys of a 

 slender form and long tails. Not being much shot at, they are 

 rather bold, and remain quite unconcerned when natives alone 

 are present, but when I came out to look at them, they would 

 stare for a minute or two and then make off. They take 

 tremendous leaps from the branches of one tree to those of 

 another a little lower, and it is very amusing when one strong 

 leader takes a bold jump, to see the others following with more 

 or less trepidation ; and it often happens that one or two of 

 the last seem quite unable to make up their minds to leap till 

 the rest disappear, when, as if in desperation at being left 

 alone, they throw themselves frantically into the air, and often 

 go crashing through the slender branches and fall to the 

 ground." 



XXVIII. THE MITRED LANGUR. SEMNOPITHECUS MITRATUS. 



Freshytis mitrata, Escholtz, in Kotzeb. Reis., p. 196, ciun tab. 

 (1821). 



