miller] seventy new MALAYAN MAMMALS 69 



whitish hairs, but these are not numerous enough to be very con- 

 spicuous. " Palms, soles, face, and callosities black in both sexes. 

 Anus pinkish white in male. Iris brown. "^ 



Skull and teeth. — The skull (pis. xv, xvi) rather closely resembles 

 that of an adult male Nasalis larvatus, but is considerably smaller ; 

 the rostral portion is less developed, and the upper margins of the 

 orbits are more distinctly outlined from the braincase. As compared 

 with the skulls of Rhinopithecus figured by Milne-Edwards, the width 

 is less in proportion to the length, the anterior nares are narrower, 

 the orbits are nearer together, the ridge above them is less curved, 

 and the whole facial aspect is more suggestive of Macacus. Ros- 

 trum decidedly more produced than in the Tibetan species. Teeth 

 essentially as in Preshytes, but inner cusps of upper molars and outer 

 cusps of lower molars even better developed and in height almost 

 equal to those of the opposite side of the teeth. 



Measurements. — External measurements of type : total length, 

 740; head and body, 550; tail vertebrae, 190; pencil, 20; foot, 170; 

 ear from meatus, 24 ; ear from crown, 12 ; width of ear, 24. Ex- 

 ternal measurements of an adult female (No. 121,658) from South 

 Pagi Island : total length, 650 ; head and body, 550 ; tail vertebrae, 

 100; pencil, 10; foot, 150. 



Cranial measurements of type: greatest length, 106; basal length, 

 82 ; basilar length, yy ; median palatal length, 36 ; palatal breadth be- 

 tween front molars, 21.6; zygomatic breadth, 75.4; mastoid breadth, 

 62 ; greatest breadth of braincase above roots of zygomata, 56 ; least 

 breadth of braincase immediately behind orbits, 39.6 ; greatest orbital 

 breadth, 64.6 ; least interorbital breadth, 8.8 ; least distance from 

 orbit to alveolus of inner incisor, 32 ; greatest depth of braincase, 

 43 ; mandible, 74 ; depth of mandible at posterior end of last molar, 

 27.4; maxillary toothrow exclusive of incisors (alveoli), 34.6; three 

 upper molars together (crowns), 21.6; mandibular toothrow ex- 

 clusive of incisors (alveoli), 40.6; three lower molars together 

 (crowns), 23. 



Specimens examined. — Ten, all from South Pagi Island. 



Remarks. — This monkey is so different from all other known 

 species that further comparison is unnecessary. 



The specimens show no appreciable variation, except that the 

 females are uniformly much smaller than the males. Two young 

 individuals (male. No. 121,655, and female. No. 121,656), 455 mm. 

 and 465 mm. respectively in length, and with the milk dentition still 

 in place, are light cream-buff throughout. Another (female. No. 



^ Collector's note ; does not refer specifically to the type specimen. 



