PYGATHRIX 55 



PyGATHRIX SANCTORUM (EUiot). 



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. carbo 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. obscura 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 



