P¥YGATHRIX 81 
Measurements. Total length, 1,240; tail, 740; foot, 150. Skull: 
total length, 92.9; occipito-nasal length, 79.6; intertemporal width, 
44.4; breadth of braincase, 51; Hensel, 26.9; zygomatic width, 69; 
median length of nasals, 11.1; length of upper canines, 14.8; length 
of upper molar series, 25.4; length of mandible, 62.2; length of lower 
molar series, 29.9.* 
There are specimens of this race in the British Museum from both 
Battam and Bintang Islands. It differs from P. cristata in being of 
a much darker hue, and in not having so much of the silvery white 
speckling throughout the pelage. In general size the two forms are 
about the same. 
PYGATHRIX ULTIMA (Elliot). 
Presbytis ultima Elliot, Proc. U. S. Nat. Mus., XXX VIII, 1910, 
p. 351. 
Type locality. Mount Dulit, Borneo. Elevation 3,000 feet. Type 
in United States National Museum. 
Genl. Char. Similar in color to P. cristata but cranial characters 
very different. The skull compared with that of P. cristata, two 
adult males, is generally larger; rostrum and also the braincase longer 
and narrower ; septum broader; tooth row almost straight, (curved in 
P. cRISTATA); teeth larger and tooth row longer; pterygoid fossa 
longer and pterygoids not so widely flaring ; bullz much less inflated, in 
fact compressed and flattened; palate longer and narrower; the lower 
edge of the mandibular angle is much more rounded, and the lateral 
pit of the ascending ramus is shallower. 
Color. Like P. cristata but averaging slightly darker. 
Measurements. Total length, 1,370; tail, 820, (skin). Skull: 
total length, 104.2; occipito-nasal length, 87; Hensel, 75.3; zygomatic 
width, 77; intertemporal width, 42.5; palatal length, 38.9; width, 19.4; 
median length of nasals, 15.1; length of upper molar series, 39; length 
of mandible, 75.7; length of lower molar series, 36.5. Ex type in 
United States National Museum. 
PYGATHRIX MARGARITA (Elliot). 
Presbytis margarita Elliot, Ann. Mag. Nat. Hist., IV, 8th Ser., 
1909, p. 271. 
Type locality. Lang Bian, Annam. Type in British Museum. 
Color. Forehead covered by long, stiff, erect, black hairs ; 
*The type of this race being a female, the measurements have been taken 
from a skull of a male. 
