1900.] MAMMALS OE SIaM AND THE MALA* PENINSULA. 319 



and some from Tapah, Batang Padang, are labelled S. albocinereus, 

 Schinz, or " Ka Ka." 



Colour. Specimens from Johore. The beautifully soft fur is 

 very dark grey, practically black, except on the chin and breast, 

 where it is lighter, and on the inner side of the forearms, where it 

 is light grey, and on the belly and inner side of the hind legs, where 

 it is white. On the inner side of the thighs the two colours do not 

 gradually blend, but there is a sharp line of demarcation between 

 the black and white. The eyelids are whitish, the skin round the 

 mouth pinkish, the rest of the naked face grey. The naked skin 

 of the hands, feet, and callosities is dark grey. 

 Size. Specimens from Johore : — 



$ . Head and body 21 in. (or 536 mm.) ; tail (with end hair) 



26| in. (or 669 mm.). 

 5 . Head and body 21 \ in. (or 546 mm.) ; tail (with end hair) 

 27 in. (or 688 mm.). 

 Distribution. Tenasserim, Malay Peninsula, Sumatra, and Borneo. 

 N.B. — Semnopithecus neglectus, Schlegel, founded on a specimen 

 from Singapore, is probably a variety of S. femoralis. 



12. Semnopithecus maurus (Schreb.). The Negro Monkey. 

 ? Semnopithecus cristatus, Cantor, p. 5. 



Distribution. Cantor gives the habitat of his S. cristatus as 

 " Pinang, Malayan Peninsula, Sumatra, Borneo, Banka." 



H. O. Forbes, 'Handbook of Primates,' ii. p. 126, gives the 

 distribution of S. maurus as " Malay Peninsula, Sumatra, Java, 

 Billiton, Borneo." 



13. Semnopithecus mitratus (Eschscholtz). The Mitred Leaf- 

 Monkey. 



? Semnopithecus albocinereus, Cantor, op. cit. p. 4. 



Distribution. " Siam, Malay Peninsula, Sumatra." (Forbes, 

 ' Handbook of Primates,' ii. p. 139.) 



Mr. Oldfield Thomas (P. Z. S. 1896, p. 72) mentions a specimen 

 of Semnopithecus siamensis Mull. & Schl., " from the interior of 

 the Malay Peninsula, beyond Klang," collected by Mr. Davison, 

 and says of it : "A curious whitish specimen, far paler than usual, 

 but apparently not specifically different from Cantor's specimens 

 of S. albocinereus, which Dr. Anderson has shown to be identical 

 with S. siamensis." 



14. Semnopithecus geemaini Milne-Edwards. Germain's 

 Leaf-Monkey. 



When on the Bangpakong River in Siam, in March 1897, we 

 from time to time saw flocks of from 10 to 20 monkeys of this 

 species in high trees in patches of jungle. The skin of the face 

 is entirely black, the iris dark brown. A male I shot near 

 Tahkamen measured : — Head and body 23^ in. (or 587 mm.) ; tail, 

 with end hair 33 in. (or 838 mm.), without end hair 31| in. (or 

 800 mm.). 



