PYGATHRIX 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., XXXVIII, 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 ; bullae 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; 



*TIie type of this race being a female, the measurements have been taken 

 from a skull of a male. 



