36 SIMIID^. 



The skull of S. melalophus, like others of the Semnopitheci, is characterised by a 

 slight swelling or nodosity of the nasal processes or internal orbital angles of the 

 frontals. This feature is most developed in an adult female skull before me, 

 and to such an extent compared with an adult male that had not the skulls 

 been removed under my direct supervision from the two individuals which yielded 

 them, I would have been puzzled to regard them as belongicg to one and the 

 same species. But the external characters of these two animals were identical, 

 both belonging to the variety named S. sumatt^anus var. aurata, Mliller and 

 Schlegel. The occipital regions of these skulls are also remarkably unlike, as 

 in the female it is very much produced backwards and downwardly directed, while 

 in the male it is much more vertical, thus considerably reducing the length of the 

 brain-case. 



The frontal region is broad and the orbits large and obliquely oval. 



Ft. In. 

 Length of body (female) to root of tail . . . . . .16 



of tail 2 8 



SaUtat. — Sumatra. 



Semnopithecus mitratus, Eschscholtz. 



Vresbytis mitrata, Eschscholtz, Kozebue Raise Sud See und Bering's- Strasse, 1821, p. 196, plate, 



(figs. 1 and 2, skull), (fig. 3, hand) ; Lesson, Man. de Mamm. 1827, p. 44. 

 Semnopithecus comatus, Desmarest, Mamm. Suppl. 1822, p. 533 ; F. Cuv. Hist. Nat. des Mammif 



1825, March, pi. xiii. ; Desmoulins, Diet. Class. d''Hist. Nat. vol. vii. 1825, p. 569 ; Lesson, Man. 



de Mamm. 1827, p. 41 ; Temminck, Monogr. de Mamm. vol. i. 1827, p. 14. ; Desmarest, Diet. 



de Sc. Nat. vol. xlviii. ]827, p. 438; Griffith, An. King. vol. v. 1827, p. 10; G. Cuv. Reg. An. 



(nouv. ed.) 1829, vol. i. p. 94 (in part) ; Fischer, Syn. Mamm. 1829, p. 16 (exclusive of S.fasci- 



cularis, Raffles) ; Is. Geoff. St.-Hil. Zool. Voy. de Belanger, 1834, p. 40 ; Wagner, Schreber, 



Saugeth. Suppl. vol. i. 1840, p. 87, pi. xxiv. A; Lesson, Sp. des Mammif. 1840, p. 61; 



Martin, Nat. Hist. Quadr. 1841, p. 468 ; Schinz, Syn. Mamm. vol. i. 1844, p. 38 ; Gervais, 



Hist. Nat. des Mammif. 1854, p. 63 ; Wagner, Schreber, Saugeth. Suppl. vol. v. 1855, p. 24; 



Beyrich, Abhandl. der Berl. Akad. der Wiss. 1860, p. 7. 

 Semnopitkecus fulvoffriseus, Desmoulins, Diet. Class. d^Hist. Nat. vol. vii. (1825), 570 (in part, 



skeleton) ; Fischer, Syn. Mamm. 1829, p. 15 ; Is. Geoff. St.-Hil. Zool. du Voy. de Belanger, 



1834, p. 36 ; Martin, CharleswortVs Mag. Nat. Hist. vol. ii. new ser. 1838, p. 439. 

 Fresbytis mitrula, Griffith, An. King. vol. v. 1827, p. 7. 

 Semnopithecus fascicularis, Owen, Proc. Zool. Soc. 1833, p. 75. 

 Semnopithecus mitrattis, Schlegel, Essai sur la Physion. des Serpens, Pt. Gen. 1837, p. 237 ; Muller 



und Schlegel, Verhandh 1839-44, pp. 60, 65, pL xii. fig. 2 (juv.), pL xii. bis fig. 1 ; Is. 



Geoff. St.-Hil. Cat. Method des Mammif. 1851, p. 16 ; Horsfield, Cat. Mamm. E. Ind. Co. 



Mus. 1851, p. 15 ; Dahlbom, Stud. Zool. Fam. Reg. An. 1856, pp. 88, 90 ; Mivart, Proc. 



Zool. Soc. 1864, p. 626 ; Gray, Cat. Monkeys and Lemurs, B. M. 1870, p. 16. 

 Vreslytis mitratus, Blainville, Osteo. des Mammif. vol. i. 1839-64, p. 23. 



General colour dark greyish, darker on the back and the external surface of 

 the limbs, but paler on the feet, on which a few reddish hairs are sometimes inter- 

 mixed. The flanks, the under parts, and inside of limbs are yellowish or sullied 

 white. The upper surface of the tail dark greyish and its extremity occasionally 



