32 SIMIID^. 



preserved for some time in alcohol. It agreed in its form and general dimensions with 

 the undoubted females of S. chnjsomelas of the same type of colouring as the males. 

 Intermixed among the yellowish hairs on the head, tail, and limbs are numerous 

 black hairs, a character which occurring also in >S'. auratus, Is. Geoff., with which 

 this animal agrees in every respect except its lighter colouring, has suggested the 

 probability that these reddish monkeys of the ^S*. auratus type are females of 

 S. chrysomelas either in a transitional or in a seasonal tinge of pelage. So little, 

 however, is known regarding the life, history, and pelage changes of the Semno- 

 jMheci, and especially of S. femoralis, that the evidence regarding the specific 

 identity of S. femoralis with S. auratus must still be regarded as an open question. 

 There is also a remarkable similarity between the skulls of S. rubicundus and 

 S. femoralis, both of which are from Borneo, the former in its colouring being 

 closely allied to S. auratus. 



The skull of an adult female has the orbits very large and outwardly expanded, 

 the forehead moderately arched and expanded. The orbital septum is rather 

 long and broad, more especially at its upper end, the extremity of the nasals being 

 but little below the middle of the orbit. There is a slight nodosity at the naso- 

 frontal suture. The hinder border of the last molar is on a line with the posterior 

 margin of the palate. The fifth talon of the last inferior molar is but feebly 

 developed. 



Semnopithectjs atjratus, Geoff. St.-Hilaire. 



Cercopitliecus auratus, Geoff. St.-Hil. Ann. du Mus. 1812, vol. xix. p. 93 ; Desmarestj Nouv. 



Diet. d'Hist. Nat. vol. xv. 1817, p. 676; Mamm. 1820, p. 56; Kulil. Beitr. zur. Zool. 1820, 



p. 10; Lesson, Man. de Mamm. 1827, p. 35; Temminck, Monogr. de Mamm. vol. i. 1827, 



p. 14; Griffith, An. King. vol. v. 1827, p. 11. 

 Simla auratus, F. Cuvier, Diet, des Sc. Nat. vol. xx. 1821, p. 34. 

 Semnopithecus auratus, Desmoulins, Diet. Class. d'Hist. Nat. vol. vii. 1825, p. 570 ; Fischer, Syn. 



Mamm. 1829, p. 15 ; Lesson, Compl. des ffiuvres de Buffon, 1828-30, vol. iii. p. 18 ; Geoff. 



St.-Hil. Zool. Voy. de Belanger, 1834, p. 44; Schlegel, Essai sm- la Physion. des Serpens, Pt. 



Gen. 1837, p. 237; Martin, Charlesworth's Mag. Nat. Hist, new ser. vol. ii. 1838, p. 439; 



Lesson, Sp. des Mammif. 1840, p. 63 ; Martin, Nat. Hist. Quadrumana or Monkeys, 1841 



(in part), p. 474 (plate) ; Is. Geoff. St.-HiL Cat. Method des Mammif . 1851, p. 15; Gervais, 



Hist. Nat. des. Mammif. 1854, p. 62; Dahlbom, Stud. Zool. Fam. Reg. An. 1856, pp. 88-90; 



Blyth, Jour. As. Soc. Bengal, vol. Ixvi. 1875, p. 10. 

 Semnojiithecics chrysomelas, Wagner, Schreber, Saugeth. Suppl. vol. v. 1855, p. 22 (in part). 



The type of this form is a pale golden-yellow monkey with the hair on the 

 head rather long and erect. All the under parts are yellow. A large black patch 

 on the knee, and intermingled black hairs on the yellow tail and hind feet. The 

 colour of the face in life is unknown. 



Habitat. — Said to inhabit the Moluccas. 



The proportions and character of the crest of this monkey seem to me to point 

 in the direction of its being a variety of S. femoralis, either depending on inter- 

 mediate pelage distinctive of the female at a period of her history or attributable 



