QUADRUMANA. 
61 
The Ordinary Sapajous have the head flat, the muzzle but sliglitly prominent (sixty degrees). 
In some the anterior thumbs are nearly or quite hidden in the skin, and the prehensile portion of 
the tail naked beneath. They constitute the genus 
CoAiTA {Ateles, Geof.), — 
[Or the Spider Morikeys, as they are commonly termed, in allusion to their long slender limbs, and sprawling 
movements.] 
The first species, the Chamek (A. subpentadactylus, Geof.), has a slight projection of the thumb, though only 
for one phalanx, which has no nail. Another, the Mikiri {At. hypoxanthus, Pr. Max. ; Brachyteles macrotarsus, 
Spix), has also a very small thumb, and sometimes even a nail. These two species are separated by Spix under 
the name Brachyteles. They connect Ateles with Lagothrix.* 
The others, to which alone Spix applies the name Ateles, have no apparent thumb whatever. [Six have been 
ascertained ; one of them the Sim. paniscus, Lin.] 
All the above are natives of Guiana and Brazil. Their limbs are very long and slender, and their gait slow 
and deliberate. They exhibit some remarkable resemblances to Man in their muscles, and, of all animals, alone 
have the biceps of the thigh made like his. [Accordingly, they make little use of their fore-hands in progression. 
Their colours are chiefly or wholly black, or fulvous-grey ; face black, or flesh-coloured. They are gentle and 
confiding, and capable of much attachment. Some attain to as large a stature as the preceding.] 
The Gastromargues {LagotJirix, Geof. ; Gastromargas, Spix). 
Head round, as in the Coaitas ; the thumb developed, as in the Stentors ; and tail partly naked, hke 
the one and the other. Such are — 
The Caparo, Humb. {L. Humboldtii, Geof. ; G. olivaceus, Spix), and the Grison {L. canus, Geof. ; G. infumatus, 
Spix.)— Inhabitants of the interior of South America, said to be remarkable gluttons. Their limbs are shorter 
and stouter than in the Coaitas, and they often raise themselves on their hinder extremities : occur in numerous 
bands. 
The other Sapajous, or 
The Capuchins {Cebus, Geof.) — 
Have a round head, the thumbs distinct, and the tail entirely hairy, though prehensile. The species 
are still more numerous than those of the Stentors, and almost as difficult to characterize. 
Some have the hair upon the forehead of a uniform length ; as the Sajou {Sim. apella, Lin.), and the Capuchin, 
[Auct.1 {S. capucina, Lin.) : others have the hair of the forehead so disposed as to form aigrettes ; as the Horned 
Capuchin {Sim. faluellus, Gm., which has a tuft of black hairs on each side of the forehead), the C. cirrhifer, 
Geof., and the Cebus of the same name of Pr. Max., but which is different — C. cristatus, F. Cuv. There are nu- 
merous others ; but we require many observations, made in the places where these animals inhabit, before we can 
hope to establish their species otherwise than in an arbitrary manner. [About sixteen ai’e commonly admitted, 
most of which are of different shades of brown, some very variable. They are of smaller size than the preceding, 
and of mild and gentle disposition ; their motions are quick and light, and they are easily tamed. Several exhale 
a strong odour of musk.] 
In the SAiMiRif, the tail is depressed, and almost ceases to be prehensile ; the head is very much 
flattened ; in the interorbital pai tition of the cranium there is a membranous space. Only one species 
is known, — 
The Saimiri {Sim. sciurea. Buff. xv. 10.)— Size of a Squirrel ; of a yellowish grey ; the fore-arms, legs, and the 
four extremities, of a fulvous-yellow; end of the nose black. [A pretty, vivacious little animal, which subsists 
much on insects, and is also carnivorous. Its tail is sub-prehensile, or capable of coiling slightly throughout its 
length, and so holding in a moderate degree ; but its extremity cannot seize a small object : it is often wound 
round the body.] 
The remaining Monkey-like animals of America have the tail not at all prehensile.J; Several have 
that appendage very long and tufted, whence they have been termed Fox-tailed Monkeys : their teeth 
project forwards more than in the others. They are 
The {Pithecia, Desm. and Iliig.), — 
[Wliich are again divisible into three minor groups. Of these, the first is represented by the Yarke Saki {Sim. 
Pithecia, Lin., P. leucocephala), and three or four others : singular-looking animals, with extremely long hair, except 
on the head, where, in most of the genus, it is parted. In the Yai’ke, the head is whitish, and all the other parts 
brown-black, which adds to the strangeness of its appearance. The Jacket Saki {Sim. sagulata, Traill), illustrates 
* The latter may do so, but certainly not the former, which is in 
all other respects a characteristic Ateles . — Ed. 
+ Sagoinus (or, what would be preferable, Sagunus,) of some. 
This name, however, originally proposed by Lacepedkfor the Sagouins, 
(Callithria ), among which the Saimiri was included, can only lead to 
confusion if applied to the latter exclusively. We would suggest, 
therefore, the appellation Samiris, formed out of the vernacular. — Ed. 
t It has a propensity to curTin the Marmosets, if not in the Sa 
gouins. — Ed. 
