PBESBYTIS. 3 



species from the Malayan islands. They are of small size, gentle in 

 disposition, and progress on the gromid on their hind legs in a series of 

 hops or jumps sideways, with their arms raised erect. 



Monkeys. 



The Entellus group of monkeys are placed by Mr. Blythin a sub-family, 

 CoLOBiN*, along with an African genus, Colohus. They are distinguished 

 from the other monkeys and baboons by wanting the cheek-pouches, and 

 having a peculiar sacculated stomach. 



Gen. Prksbytis, lUiger. 



Syn. Semnopithecus, F. Cuvier — Langur, H. Hunumdn, of Hindus. 



Char. — Cheek-pouches rudimentary or wanting ; head round, the face 

 but little^produced, having a high facial angle. The last molar tooth of 

 the lower jaw, with a fifth or accessory tubercle behind ; canines much 

 longer than the incisors; extremities and feet long; fore-feet with the 

 thumb short, and the third and fourth fingers long and sub-equal. Tail 

 very long, slender and straight. Callosities present. Peculiar to the 

 Indian region. 



The body of these monkeys is comparatively slender, and the Germans 

 call them slim-apes. Their long and slender limbs, long tail, and the 

 black face with an eye-brow of long stifi^ black hairs, pointing forwards, dis- 

 tinguish the Langurs from all other monkeys. The absence of the cheek- 

 pouch appears to be in some measure compensated by a peculiar sacculated 

 stomach, described fully by Owen, in the 1st Vol. " Transactions of the 

 Zoological Society ;" several distinct sacs or pouches being added to and 

 communicating with the stomach. In a specimen of P. .entellus, 20 inches 

 long to the root of the tail, the small intestines were 13-^ feet long, the 

 large ones 2 feet 10 inches, and the ccecum 4 inches. The distended 

 stomach measured 31 inches along the greater curve, and was 1 foot in cir- 

 cumference. It consisted firstly, of a simple cardiac pouch ; secondly, of 

 a wide and sacculated middle portion ; and thirdly, of a narrow lengthened 

 canal, sacculated at first, and simple- afterwards, vascular, and the true 

 digestive stomach. Owen in this paper, asks if they feed on young shoots 

 or leaves, from the quasi-ruminant character of the stomach ; and it has 

 since been ascertained beyond a doubt that they constantly do partake of 

 leaves. Bezoars have been found in the stomach of a Malayan Preshytig, 



