730 Proceedings of the Asiatic Society. [June, 



colour through life. The H. choromandus of Mr. Ogilby is founded on a 

 Hoolock of intermediate hue, in the collection of the Zoological Society. I 

 may add that we have three skeletons of Hoolocks of different ages, one only 

 being as yet mounted. 



Of H. lar, the common Gibbon of the Tenasserim provinces and Malayan 

 peninsula, (replaced in Arracan, Sylhet, and Assam, by H. hoolock,) we have 

 as many as twelve specimens of all ages and colouring ; for seven of which, 

 from Malacca, we are indebted to Mr. Frith and Mr. E. Linstedt.* The whole 

 of these, and eleven other Malacca specimens lately received by Mr. Frith, 

 are more or less dark, varying from deep brown to brownish-black, with the 

 back generally paler (more or less so), and sometimes variegated with whitish 

 patches : occasionally the rump is whitish in dark individuals : and the hands 

 and feet are ful vous-white, rarely much suffused with brown. The white 

 ring surrounding the face varies a good deal in development ; in one of our spe- 

 cimens being almost obsolete, except on the chin : and some again have much 

 more white on the chin and throat than others. The only pale specimen of 

 this Gibbon which we possess from Malacca, is a very young male that was 

 presented alive by Mr. M'Clelland :f but in the Tenasserim provinces, the 

 pale variety seems greatly to predominate (if not to the exclusion of the dark 

 varieties, at least in some localities). The Rev. J. Barbe presented us with 

 adults of both sexes, together with the new-born young, and one a little 

 older, from Ye ; all being of a fulvous-white colour, palest in the old 

 male ; and another Tenasserim adult female, received from the Barrackpore 

 menagerie, is of the same light hue. It is remarkable that while Mr. Barbe's 

 smallest Tenasserim specimen, about the size of a Marmozet, is densely clad 

 with long hair throughout, one of the same size (but still younger) from Ma- 

 lacca, has the belly and inside of the thighs entirely nude of hair, the throat, 

 breast, inside of arms, and outside of thighs, very scantily clad, and the pelage 

 of the head and back is very much shorter and less dense than in the other ; 

 a greater difference than so slight a disparity of age seems sufficient to ac- 

 count for : indeed, our young pale specimen from Malacca, though consi- 

 derably older than either, is much less densely clad than the infantile 

 Tenasserim specimen. 



Of the Monkeys with a simple stomach, and cheek-pouches, the largest and 

 most highly typical are the African Baboons. We have only a young speci- 

 men of 



* Mr. Frith has since favored us with another skin of a mature female, remarkable for 

 having a small supplementary nipple half an inch below the ordinary left nipple. 



t This was brought to Calcutta by Capt. Charleton, who had also pale adults from 

 Malacca, and informed me that the pale race (which he considered distinct) kept in 

 separate flocks from the dark race. Dr. Cantor has also pale Malayan specimens. 



