PYGATHRIX 55 
PYGATHRIX SANCTORUM (Elliot). 
Presbytis sanctorum Elliot, Proc. U. S. Nat. Mus., XXXVIII, 
1910, p. 351. 
Type locality. St. Matthew Island. Mergui Archipelago. Type 
in United States National Museum. 
Genl. Char. Similar in color to P. carso from Terautau and 
Langkawi islands, Straits of Malacca, but different cranial characters. 
Teeth large ; rostrum longer as is also the palate; palatal arch pointed, 
reaching nearly to posterior edge of second molar; pterygoids much 
longer, widely spread ; pterygoid fossa contracted, widening at posterior 
edge of palate; arch longer and more curved; occipital region above 
foramen magnum broader. Braincase longer and wider, and orbits 
higher than wide, not round. Mandible and lower tooth row longer. 
Color. This species is very like the Terautau animal, except that 
the nuchal crest is creamy white, and the tail is a pale buffy gray. 
Measurements. Total length, 703.2; tail, 508. Skull: total length, 
98.8; occipito-nasal length, 81.7; Hensel, 70.5; zygomatic width, 73.8; 
intertemporal width, 40.6; palatal length, 31.2; length of upper molar 
series, 27.3; length of mandible, 67.1; length of lower molar series, 
34.3. Ex type United States National Museum. 
The island forms of P. opscura are apparently characterized by 
having much larger teeth than are seen with those on the mainland. 
While resembling the species of the islands of the Straits of Malacca, 
in general coloration, the many and important cranial differences forbid 
the idea that they should be considered the same species. 
PYGATHRIX NUBIGENA (Elliot). ; 
Presbytis nubigena Elliot, Ann. Mag. Nat. Hist., IV, 8th Ser., 
1909, p. 268. 
Type locality. ‘Keka,’ Malacca. (Cantor). Type in British Mu- 
seum. 
Geogr. Distr. Southern Malacca. 
Genl. Char. Eyelids, lips and chin flesh color, face brownish 
black, (skin). General color very dark above, top of head black, 
under parts light; hair radiating from a central point on the crown. 
Short occipital crest. 
Color. Long black hairs on forehead directed outward, top of 
head black, hairs grayish white at base; neck and entire upper part 
of body, and outer side of arms Prout’s brown; wrists and hands 
black; outer side of thighs grayish white; from hips to below knees 
on top is a brownish black line much mixed with brownish gray hairs 
