178 
ORDER QUADRUMANA.— GENUS CEBUS. 
acteristicof the species, we have had an opportunity of ascertaining from 
a living specimen, in the collection now forming for the Zoological Society 
of Edinburgh. The tail of our Cebus hypoleucus is entirely covered with 
hair, and no trace of a callosity is visible on any part. 
All the movements of this animal are exceedingly brisk and lively. It 
is also very gentle and intelligent; its eye too is quick, so that it watches 
all one’s gestures, and appears to comprehend them ; nay, it almost seems 
to read one’s thoughts. 
5. CEBUS CHRYSOPUS GOLDEN-LIMBED WEEPER. 
Sijn . Cebus chrysopes — F. Cuv. 
icon. Sajou a ptEDs DOBES. — F. Cuv. et Geoff. Hist. Mam. ' 
SPECIFIC CHARACTERS. 
The Hair dusky brown above, white beneath ; a white circle round 
the face ; bright golden yellow upon the limbs. 
The Face and Ears brown. The Hands bluish-grey. 
The Tail bushy ; dusky brown towards the base, elsewhere yellowish- 
white. 
Inhabits 
The height and proportions of this Weeper, for a knowledge of which 
we are indebted to M. Frederic Cuvier, do not differ materially from those 
already described. Its head is very large and round ; the face is naked, 
and rather brown, and surrounded by a broad circle of white hairs, which 
covering the forehead and cheeks as far as the ears on both sides, meet 
beneath the lower jaw. The remainder of the head is of a dusky brown, 
and this colour extends along the upper part of the back ; the sides of 
the body and shoulders are somewhat lighter, while the neck, breast, 
belly, and the inner surfaces of the thighs, ate white. Tlie tail near its 
origin is, on the upper surface, of the same colour as the back, elsewhere 
it is yellowish-white. All the limbs arc of a bright golden yellow. The 
skin of the fingers and palms of all the hands is bluish, and the ears are 
of the same colour as the face. 'Fhe hairs are thick, soft, and very silky, 
on all the upper parts of the body, but more scanty beneath, especially 
on the abdomen ; the tail is very bushy. 
M. Cuvier informs us that he had an opportunity of studying the habits 
of this animal only for a short time; and that its dispositions served to 
correspond with those of the other Weepers. It exhibited the same pe- 
tulance and caprice : its voice was something like a slight whistle, during 
its joy; and when alarmed or in wrath, its cry was sharp and rough. 
6. CEBUS ALBIFRONS.— WHITE-FRONTED WEEPER. 
Syn. SiMtA ALBIFRONS ("OoAVAPAVi). — Humb. Obs. Zool. p. 323 and 356. 
Cebus albifrons. — Geoff. Ann. Mus. XIX. — Desm. Mam Fiscli. 
Syn. Mam. 
Jeon. 
SPECIFIC characters. 
The Hair dark grey above, lighter beneath ; the top of the head greyish- 
black ; limbs of a yellowish-brown. 
The Face bluish-grey. 'Fhe Forehead and Orbits pure white. 
Inhabits the Bunks of the Orinoco. 
This Weeper-Monkey is only known to us from the description of the 
Baron Humboldt. It inhabits the forests near the Cataracts ofthe Orinoco, 
is mild, active, and not so noisy as its congeners in that locality. Num- 
bers of them are found together in troops. At Maypurcs, M. Humboldt 
found a domesticated individual, which every morning caught a Pig, and 
mounting on its back, rode during the whole day over the savannah 
which surrounded the cabins of its Indian masters. The same individual 
was likewise in the habit of riding on the back of a Cat' which had been 
brought up along with it in the house of the missionary of Maypures, 
while puss surtered patiently the petulance of her more intelligent com- 
panion. 
The White-fronted W eeper, or Ouavapavi of the Cataracts, may be 
distinguished at once by the contrast between the pure wliite of the fore- 
head and orbits, with the bluish-grey of the remainder of the face. Its 
head is in the form of a greatly elongated oval. 'Fhe hair of the body is 
dark grey, lighter towards the breast and belly, but darker towards the 
limbs, where it becomes of a yellowish-brown. 'Fhe top of the head is of 
a grey approaching to black, forming a cowl ; a greyish streak extends to. 
wards the nose along the centre of the forehead; the eyelashes are of a 
very dark grey. The eyes are large, brown, and very vivid; the ears have 
a margin, and are covered with hair ; the tail is nearly as long as the body, 
ash-coloured above, whitish beneath, and of a dark brown at the point, 
which has no callosity. 'Flie nails aie all rounded, and very slightly con- 
vex. A stripe of very dark grey extends along the dorsal line. 
7. CEBUS FULVUS FULVOUS WEEPER. 
Syn. Cebus fulvus. — Desm. Mam. 
Cebus flavus. — Geoff. Ann. Mus. XIX. — C. ALBUS. — Ib. 
Jeon. Simla flava. — S ebreb. Saiigib. pi. 31. B. 
Cebus fulvus (var.) — D’Orb.' Voy. pi. 3 (Mammiferes). 
Cebus unicolor. — Spix, Sim. et Vespert. Bras. pi. 4'. 
specific CHARACTERS. 
The Hair entirely yellow or brownish-yellow, deeper on the top of the 
head. 
The Face and Hands dark violet-grey. 
Inhabits Brazil. 
The Yellow Weeper was first noticed by Maregravius under the name 
of Caitaia (Bras. 227). Its body is robust, the head large and round, 
while the face is shortened. The colour of its hair is a uniform clear 
brown or brownish-yellow, becoming deeper along the centre of the hack, 
and especially on the top of the head, but assuming a greyer tint towards 
tlie limbs and tail. The ears are short and naked ; the face is of a dark 
violet-grey ; the eyes light brown ; the tail is thick, and nearly as long as 
the body ; the nails are yellow. This description is taken from a male, 
found by M. Spix in tlie forests of Teffc, a branch of the Rio Solimoens. 
M. D’Orbigny has lately published the figure of a Fulvous Weeper 
much brighter in its colour than the C. unicolor of Spix, but its description 
has not yet appeared. The Cebus albus of M. Geoffroy is an Albino 
variety of this species. 
8. CEBUS ROBUSTUS.— GREATER WEEPER. 
Syn. Deb bbaiine Mico. — P r. Max. Beitr. 
Cebus bobusius Kuhl. Beitr. — Desm. Mam. , 
Icon. Cebus robustus Pr. Max. Abbild. 
Cebus MACROCEPHALUS. — Spix, Sim. et Vespert. Bras. pi. 1. 
SPECIFIC CHARACTERS. 
The Hair of the head almost black ; the limbs and tail brownish-black ; 
elsewhere reddish-chestnut brown. 
The Face grey flesh-colour. The Hands violet-grey. 
Inhabits Brazil. 
This animal, as its specific name denotes, is strong and muscular, es- 
pccially in the limbs and tail, and very thickly covered with hair. Its 
body is thick and round, the face is broad, greyish flesh-coloured, and 
scantily covered with hair. On the top of the head, a small tuft appears 
slightly elevated. 'Fhe head is black; the hands, the inner surl'ace ofthe 
limbs, the fore-arms, the lower part of the legs, and the tail, are of a glossy 
brownish-black ; the whole body is thickly covered with lung, soft, and 
shining hairs of a reddisli-chestnut brown, which, however, are grey at 
their roots, and the belly is but scantily covered. The face often becomes 
surrounded with grey hairs through age. 
The Greater Weeper is common in Brazil, but has not been found to 
the South of the Rio Doce. The females often have a yellowish-red 
band across the shoulder. Their cry is very similar to that of the Com- 
mon Horned Weeper. 
9. CEBUS XANTHOSTERNUS YELLOW-BREASTED 
WEEPER. 
Syn. Deb gelbbrustige Aefe. — Pr. Max. Beitr. 
Cebus xa.nthosternus. — Kulil. Beitr. — Desm. Mam. 
Cebus variegatus ^^young) — Geoff. Ann. Mus. XIX. 
SiMiA variegata. — Humb. Obs. Zool. p. 356. 
Icon. Cebus xantiiosternus. — Pr, Max. Abbild. 
Cebus xanthocephalus (fern.)— Spix, Sira, et Vespert. Bras. pi. 3- 
(young). 
Le Sai a grosse texe (C. Monachus).— F. Cuv. et Geoff. Hist Mam- 
(young). 
SPECIFIC CHARACTERS. 
The Hair on the top of the head, back of the neck, and tail, black} 
arms and legs brownish-black ; breast, neck, belly, and upper-arms, red- 
dish-yellow ; the back brown. 
The Face and Hands dark violet-grey. 
Inhabits Brazil. 
The Yellow-breasted Weepers bear much similarity to the species just 
described. 'Fhey are found in great numbers lii the forests near Rio J*' 
neiro, whence they make excursions upon the plantations of maize, oranges, 
and other fruits. In the Cebus xanthocephalus of Spix, tlie head and 
back of the neck are of the same colour as the breast, and in the Cebus 
t D’Orb. Vot — Voyage dans I’Amcrique Meridionale, execute dans le cours dcs annees 1826 a 1833, par M. Alcide D, D’Orbigny. Paris, 1834, et seq. 
