less h ig h ; the occipital region being prolonged less backwards, and the lambdoidal
suture is thrown upwards. The face is short, and the nasal portion is narrow
and depressed, wanting the interorbital swelling that occurs in so many of the
crested Semnopitkeci. The orbits are rather large.
The proportions of the limbs in these two speoies hare been stated by
A. M.-Edwards as follows: taking for the two as a unit of measure the total length
of the vertebral column comprised between the head and the end of the sacrum:
S. nigripes. S. nemaeus.
Total length of vertebral c o l u m n 100-0 -100
,} of h e a d ................................................ ^ ‘0 81
}) , of femur . . . . . . • • 59‘0 66
1 of, tibia '. . . • • I S p 48
„ of humerus.........................................................49‘0 47
„ of r a d i u s • 58*0 58
Inhabits Saigon and the forests bordering the Mekong towards its mouth.
This species, from what has been stated, is evidently closely allied to S. nemaeus,
which is a parallel species inhabiting the more northerly portion of Cochin China,
the first being recognised by its black hinder extremities and the latter by the
lower half of the hind limbs being reddish-brown or red,
S e m n o p i t h e c u s ( n a s a l i s ) l a r v a t u s , ’Wurmb.
De Kakato, Wurmb. Batav. Genootsch. Verhand. vol. iii. (1781), p. 145,
La guenon à long nez, Buffon, Hist. Nat. Suppl. vol. vii. 1789, p. 58, Pis. g | and xii. ; Latreille,
Buff. Hist. Nat. (ed. Sonnini) vol. xxxv. (1809), p. 294, Pis. xxix and xxx.
Le Kakau, Audebert, Hist. Nat. des Singes, Pam. iv. Sect. 11, fig. 1 (1797).
The Proboscis Monkey, Shaw. Genl. Zool., vol. i. Pt. 1 (1800), plate 22.
Cercopiihecus larvatus, Wurmb. Batav. Genootsch. Verhand. vol. iii, 1781, p. 145; Kuhl, Beitr. zür
ZooL 1-820, p. 12. • '
Nasalis larvatus, Geoff. St.-Hil. Ann. du Mus., vol. six, 1812, p. 90; Lesson, Man, de Mamm.
1820, p. 89 ; Griffith, An. Kingd., vol. v. 1827, p. 9 ; Geoff. Cours de PHist. Nat. des Mamm.
1828; Is. Geoff. St.-HiL Zool, Voy. du Bélanger, 1834, p, 47; Cat. M. Mamm. 1881,
p. 11 ; Waterhouse, Cat. Mamm. Mus. Zool. Soc. Lond. 1888, 2nd ed. p. 5 ; Lesson, Sp. des
Mammif. 1840, p. 66 ; Jacquemot and Pucheran, Voy. au Pole Sud. Zool., vol. iii. 1858, p. 17,
Pis. 2, 2A, 2B ; Gray, Cat. Monkeys and Lemurs,'‘T870, p. 18.
Cercopithecus nasicus, Desmarest and Virey, Nouv. Diet. d'Hist. Nat., vol. xv. 1817, p. 574; Cuv.
Bègn. An. nouv. éd. vol. i. 1829, p. 94 ; Wagner, Schreber, Säugeth. Suppl. vol. i. 1840, p. 102,
PI. x. B.
Lasiopyga nasicus, Desmarest, Mamm. 1820, p. 54.
Simia nasica, F. Cuv. Diet, des Sc. Nat. vol. xx. 1821, p.' 82.
Semnopithecus nasicus, Desmoulins, Diet. Class. d’Hist. Nat. vol. vii. 1825, p. 570,; Martin,
Charlesworih'B Mag. Nat. Hist, vol ii. new ser. 1838, p. 440; S. Müller (Verhandl.), Over
de Zool. van den Indscli. Arch. 1841, p. 15 ; Müller und Sohlegel, Verhandl. 1839-44, pp. 63,
80, tab. 12, fig. 3 (jnv.) ; Schinz, Syn. Mamm. vol. i. 1844, p. 43; Wagner, Schreber,
Säugeth. Suppl. vol. v. 1865, p. 85. ,
Natali* recurvas, Vigors and HorsBeld, Zool. Joum. vol. iv. 1828-29, p. 109 (Bg. head) ; Martin,
Proe. Zool. Soc. 1887, p. 71 ; Charlesworth's Mag. Nat. Hist, new ser. vol. n. 1888, p. 440.
Semnopithecus larvatus, Fischer, Syn. Mam. 1829, p. 16 ; Martin, Nat. Hist. Quadrumana, 1841,
p. 453, figs. 279, 280, 281, 282 ; Gervais, Hist. Nat. des Mammif. 1854, p. 58, head juv.,
fig. adult.
Simia nasalis, Martin, Proc. Zool. Soc. 1887, p. 70.
Rhynochopithecus larvatus, Dahlbom, Stud. Zool. Fam. Beg. An. 1856, p. 93, pi. iv.
The upper surface of the head, neck, back and flanks dark red-brown,
passing into greyish yellow on the crupper, tail, and limbs. A yellow stripe on
the shoulder. The hair on the sides of the face, neck, and shoulder is long and
of a yellowish tint variegated with reddish brown, and the chin is well bearded.
The under parts are yellowish white, and the tail is tufted. The face is a dirty
yellow merging with the white around the lips. The under surfaces of the
extremities are blackish, and the ears are of the same colour, and small. Nose
produced into a proboscis with large nostrils opening downwards and separated
from each other by a septun, but only developed in its characteristic form at a very
advanced age in both sexes, being much shorter in the young and turned upwards
(S. recurvus, Vig. and Horsfd.). The eyes are rather widely apart ; the neck short,
and the throat rather swollen from the presence of a laryngeal sack.
The colours of both sexes are the same, but the female is smaller than the
male. Its colour as it advances in âge is the subject of considerable change.
In early youth, the mouth and the area around the eyes are bluish, and the
cheeks are curiously wrinkled, and the rest of the face is sullied brownish white,
and the ear flesh-coloured, but intensely black around the margin. The hands are
black ; and the head with the exception of the crown, the neck, the upper part of
the chest, and the front of the upper arm, are dark red-brown, the rest of the
pelage being sullied, pale-yellowish brown. Through a series of changes during
which the red-brown of the upper parts first increases in strength and the grey-
brown of the hips and upper side of the tail change to yellowish white, the adult
pelage is reached.
■ Ft. In.
-Length of adult, muzzle to base of tail . . . . 2 5
',, of tail . . . . . . . . 2 2
This peculiar form, which has all the structural characters of Semnopithecus,
appears to be restricted to the Island of Borneo.
S e m n o p i t h e c u s ( n a s a l i s ) r o x e l l a n æ , A. M.-Edwards.
Semnopithecus roxellanæ, A. M.-Edwards, Comptes Bendus, 14 Fev. 1870, vol. lxx. 1870, p. 841.
Rhinopiihecus1 roscellana, A. M.-Edwards, Bech. des Mammif. 1868-74, p. 233, pis. xxxvi. et
xxxvii; Blyth, Joum. As. Soc. Beng. vol. xliv. 1875, ex. no. p. 11.
Eace much depressed in the nasal portion, nearly nude and turquoise-green.
Nose much upturned and terminating in a point shaped as two follicles. Eace
1 In 1856 the genus Rhynochopithecus was created by Dahlbom for S. (nasalis) larvatus.