pins ea 
46 PYGATMATX 
narrow white line from throat to abdomen; face, palms of the hands, 
and soles of feet black; under parts blackish, or sooty gray of varying 
intensity, in some examples nearly white. 
Measurements. Total length, 1,225; tail, 725; foot, 140. Skull: 
total length, 98.2; occipito-nasal length, 76; intertemporal width, 47.1; 
Hensel, 57.8; zygomatic width, 68.9; width of braincase, 56; median 
length of nasals, .75; palatal length, 45.8; length of upper molar series, 
23.7; length of mandible, 63.9; length of lower molar series, 28. 
This species varies considerably in its coloring, dependent ap- 
parently upon age. Some specimens, and these are young, have the 
thighs grayish in hue, dorsal line a paler brown and the under parts 
nearly white especially on lower part of the belly, the older individuals 
being like the description given above. The tail, however, is never 
whitish at the base beneath, and in this differs from P. cuRYSOMELAS, 
which always has this part of the tail white. In some specimens there 
is a white line from throat to posterior part of abdomen. 
Schlegel has separated this form with white line beneath as Sem- 
nopithecus neglectus, and says it is found only at Singapore. Among 
the specimens of P. FEMORALIS in the British Museum there are three 
with this mark, one from Johore, collected by Capt. S. S. Flower, 
the white line rather indistinct ; one from Singapore collected by Wal- 
lace, and one from Tenasserim collected by Davison, the line very 
distinct in both. As, however, other Tenasserim examples have not 
the white line nor any trace of it whatever, unless it can be shown, 
that somewhere in Tenasserim there is a point beyond which, to the 
north or south, neither style passes, it would be wiser to consider this 
white mark rather an individual peculiarity, than a specific character. 
It certainly is not confined to individuals from Singapore, as was sup- 
posed by Schlegel, nor even to the southern part of the Malay Penin- 
sula. Hose (1. c.) mentions the white line, “from the chest, in the 
adult, to the hinder portion of the abdomen” seen in specimens taken 
in Borneo, so it would seem that the character Schlegel mainly relied 
upon for his new species, is not confined to any locality. 
Messrs. Robinson and Kloss have described (1. c.) a monkey of 
this genus from Trang, and the Larut Hills, Central Perak, Malay 
Peninsula, as Presbytis neglecta keatii, comparing it with P. neglecta 
(Schlegel), from which it differs in having a generally browner colora- 
tion, no white on the chest, and the white femoral line produced to the 
heel. As has been shown above, P. neglecta (Schlegel) cannot be sepa- 
rated from P. FEMoRALIS, the character relied upon not being of any 
