Order 2. QUADRUMANA. 49 



The Ordinary Sapajous have the head flat, the muzzle but slightly prominent (sixty degrees). 

 In some the anterior thumbs are nearly or qiute hidden in the skin, and the prehensile portion of 

 the tail naked beneath. They constitute the genus 



CoAiTA (Ateles, Geof.), — 



[Or the Spider Monkeys, as they are commonly termed, in allusion to their long slender limbs, and sprawling 

 movements.] 



The first species, the Chamek {A. subfientqdacft/lus, Geof.). has a slight projection of the thumb, thouf^h only 

 for one phalanx, which has no nail. Another, the Mikiri (.1^ hijpoxanthiis, Pr, Max. ; Brachyteles maciotarsus, 

 Spix), has also a very small thumb, and sometimes even a nail. These two species are separated by Spbc under 

 the name Brachi/teles. 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. jmniscits, 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 {Laijothrlx, Geof. ; Gastromargas, Spbc). 



Head round, as in the Coaitas ; the thumb developed, as in the Stentors ; and tail partly naked, like 



the one and the other. Such are — 



The Caparo, Hiitnb. (L. Humboldtii, Geof. ; G. olieacetts, Spix), and the Grison {L. cantis, 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 CAprcHiNS {Cebus, Geof.) — 



Have a round head, the thumbs distinct, and the tail entirely hairy, tliough 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, Liu.), and the Capuchm» 

 {Auct.'] (S. capucina, Lin.) : others have the hair of the foi-ehead so disposed as to form aigrettes ; as the Horned 

 Capuchin (Sim. fatuellus, 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 difi'erent — 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 are commonly admitted, 

 most of which are of difl'erent 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 e.\hale 

 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 partition 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 coding 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 tectli 

 project forwards more than in the others. They are 



The SakIs (Pitheeia, Desm. and llbg.),— 



["Wliich are again divisible into three minor groups. Of these, the first is represented by the Yarke Saki (Sim. 

 Pitheeia, Lin., P. leucocephala), and three or four others : singular-looking animals, with extremely long hair, e.xcept 

 on the head, where, in most of the genus, it is parted. In the Yarke, the head is wliitish, and all the other parts 

 brown-black, which adds to the strangeness of its appearance. The Jacket Saki (Sim. siii/ttlata, Traill), illustrates 



• The latter may do so, but certainly not the former, which is iu i conrusion if applied to the latter exclubivcly. We would sag^est« 



all olliLT respects a characteristic ^ttlrs.—KD. therefore, the appellation Sainirii, formed out of the vernacular.— Eb. 



t *"ffciw«J (or, nhat would be preferable, Siigunus,) of some. t It nas a I'ropensity to curl in tlic Marmosets, if uot iu tlie Ss 



This name, however, >>riginally proposed by LaccpeUe for the Sajjouins, gouius.— Ed. 

 CaltithTix), among which the Saimiri was included, can only lead to 



