Presbyies cinerea, Gray, Hand-list. Mam. B. M. 1848, p. ] 98.
Semnopiikecus nigrimanus, Is. Geoff. St.-Hil. Arch, du Mus. vol. ii. 1848, p. 545; Mivart, Proc.
Zool. Soc. 1864, p. 626 : Blyth, Journ. As. Soc. Beng. vol. xliv, 1875, ex. no. p. 9.
Semnopiikecus argeniatus, Blyth, Horsfd. Cat. Mam. E. Ind. Co. Mus. 1851, p. 7.
Semnopiikecus cinereus, Mivart, Proc. Zool. Soc. 1864, p. 626.
Presbytes crislatus (nec. Raffles), Blyth, Journ. As. Soc. Bengal, vol. xliv. 1875, ex. no. p. 9.
Presbytes melanopkus, Blyth, Journ. As. Soc. 1875, ex. no. p. 9.
Prevailing colour, clear ashy grey, on the upper parts more or less tinged with
brown, passing into black on the hands and feet, and to blackish brown on the front
of the crest, and to pale-yellowish brown on the cheeks. A whitish line along the inside
of the foot. The tail uniformly dark brown or blackish. A moderately long,
erect, compressed crest, and the hairs on the parietal bones forming a whorl, the
anterior hairs being directed fdrwards, projecting beyond the eyebrows. The under
parts are less dark than those of the upper surface, and tend to greyish or yellowish
grey. The face is dull black, with the region around the eyes and the mouth fleshy
white.
In the young, some months old, the forehead, temporal region, sides of the face
and behind the ear, the flanks, the outside of the thighs, and the under parts are
pale grey, the remaining parts being pale brownish.
Inhabits Siam and the Malayan peninsula.
I have examined all the specimens on which the above synonomy is based.
Under S. mitraius, I have mentioned that this species has generally only four
tubercles on the last molar of the lower jaw, hut in a specimen in the Indian Museum
there is a distinct rudimentary fifth talon—rudimentary as compared with the ordinary
dimensions attained by that structure; and Mivart mentions that he has observed
a Semnopitliecus with six talons on the last inferior molar.
S em n o p it h e c t t s b t j t l e d g i i , n . s .
Form slender; black, the hairs tipped with lustrous grey on the head and trunk,
and with a somewhat yellowish grey on the limbs, except on the hands and feet, which
are je t black. The under parts are paler and more broadly tipped with grey. The crest
is very well defined, erect, median, much compressed and not bent forward in front,
with the h a i r external to it on the parietal region very short and broadly tipped with
lustrous grey, as is also the crest posteriorly, giving a whitish appearance to the sides
and hack of head when seen in certain lights. Hairs on the front of the forehead
short and not divergent over the face. Whiskers long, backwardly and upwardly
divided and broadly tipped with yellowish grey. Beard greyish, face dark-bluish
black. The tail black above, tipped with grey, but yellow on the under surface,
especially at the root.
The foregoing description is drawn up from a female cutting her last molar
above and below; the latter tooth has four cusps. The skull in its general form and
character resembles the skull of S. maurus, but is distinguished from it by its
gradually expanding premaxillaries.
Ft. In.
Length of body .• . . . . . . . . . 1 5‘00
,, of tail ........................................................................2 0*50
Habitat unknown.
S e m n o p i t h e c u s p r o n t a t u s , Müller.
Semnopiikecus frontaius, Muller, Tijdsch. von Natuur. Gesch., vol. v. pi. I & II, 1888, p. 186;
Martin, Nat. Hist. Quad., 1841, p. 475 (fig. 285, head) ; Müller und Schlegel, Verhandl.
1889-44, pp. 62 & 78; Tab. 8, fig. $; fig. 2, head; figs. 8 and 4, skull; Schinz, Syn. Mamm.,
vol. i. 1844; p. 88; Is. Geoff. St.-Hil. Cat. Method des Mammif., 1851, p. 15; Gervais, Hist.
Nat. des Mammif., 1854, p. 68; Wagner, Schreber, Saugeth, Suppl. vol. v. 1855, p. 24;
Dahlbom, Stud. Zool. Fam. Reg. An., 1856, pp. 88 & 90; Gray, Cat. Monkeys and Lemurs,
B. M. 1870, p . 16.
Form slender; the face broad across the eyes, but compressed from above
downwards; the trunk of the body dark-yellowish brown, with a tinge of red
on the flanks in some individuals, but passing into dark brown and then into black
on the greater part of the outside of the limbs, on the back part of the thighs and
on the root of the ta il; the remainder of the tail being greyish or yellowish brown
and tufted. The neck and head are yellow-brown, but the latter colour passes into
black on the haired portion of the forehead, sides of the head, and on the crest.
The under parts are pale reddish, lighter on the throat, extending as a narrow hand
down the inside of the fore-limbs to near the wrist, and also on the hind limbs, but
stopping short of the ankle. A bald, triangular area between the eyebrows, ascending
to the middle of the forehead and in reality occupying the glabella, reaching at
its upper end that part where the radiation of the hair of the other species usually
takes place, of a milky;white colour and wrinkled; the rest of the face being deep
black, except the lower lip and a narrow line along the upper lip which are flesh-
coloured and sparsely covered with yellowish brown hairs. Along the upper margin
of the bare area are arranged long and black hairs, which, being directed downwards
and outwards, commingle with the long, bristly, black eyebrows, and reach as far
back as the ears, as a marked lateral tuft or pencil, the hair on the side of the
head above these lengthened hairs being short. The hairs on the cheeks from
near the nose along the malar region to the anterior root of the zygomatic arch
are long and black, increasing in length on the hindmost part of the cheek to
such a degree that they depend nearly to the shoulder. The crest is erect, high
and compressed, occupying the middle line of the head like the ridge of a helmet,
over-arching the forehead, where it is slightly contracted, and reaching backwards
to the occiput, where it decreases and mingles with the hairs on the upper part of
the neck.