PYGATHRIX 43 



hands and feet glossy jet black ; sides of neck blackish, some hairs 

 ringed with white ; inner side of limbs grayish white ; dark brownish 

 gray bar across breast between shoulders, followed by a broader band 

 of gray; belly black; anal region and inner sides of arms, grayish 

 white; tail above black to tip, beneath white, covering all the tail at 

 base, but growing into a narrow stripe as it proceeds to the tip. Hairs 

 on sides of head and neck long and directed upward towards ears, 

 while those on top of head are parted from the crest, and are directed 

 backward. Some males are all black on under side of body, probably 

 the result of mature age. Ex type Leyden Museum. 



Measurements. Total length, 1,260; tail, 800; foot, 160, (skin). 

 Skull: total length, 89.1; occipito-nasal length, 78.8; intertemporal 

 width, 46.6; Hensel, 47.6; zygomatic width, 66.1; breadth of brain- 

 case, 55.3; median length of nasals, 11.8; length of upper canines, 

 13.8; length of upper molar series, 21.8; length of mandible, 58.7; 

 length of lower molar series, 25.7. Ex type Leyden Museum. 



This species has been considered a synonym of P. femoralis 

 by many writers, but it is quite distinct, and can readily be recognized 

 by its jet black pelage, and white beneath the tail. The shape of the 

 crest, and growth of hair on top of the head, is quite diflferent from 



P. FEMOILALIS. 



Pygathrix sumathana (Miiller and Schlegel). 



Semnopithecus sumatranus Miill. und Schleg., Verhandl. 

 Geschied., V, 1839-44, p. 73, tab. X bis, fig. 1, c?; Schinz, 

 Syn. Mamm., I, 1844, p. 39 ; Horsf., Cat. Mamm. E. Ind. Co. 

 Mus., 1851, p. 15; Wagn., Schreb., Saugth. Suppl, V, 1855, 

 p. 23. 

 Semnopithecus (Trachypithecus) sumatranus Reichenb., Voll- 



stand. Naturg. Affen, 1862. p. 90, figs. 207, 208. 

 Type locality. Ophir Mountain? Sumatra. 

 Genl. Char. Upper parts not black; bar across chest not brown. 

 Color. Forehead black ; crest, upper parts, flanks, and shoulders 

 mummy brown darkest on dorsal region; outer side of arms, hands, 

 legs and feet black; inner side of arms, narrowest on upper arms, 

 gray, and on thighs yellowish white to knees, sometimes extending 

 in slender line to ankles ; below knees sooty ; throat and chest blackish ; 

 abdomen yellowish white ; tail beneath on basal half white, apical half, 

 and all upper part jet black. 



Measurements. Total length, 1,270; tail, 760. Skull : total length, 



