70 MAMMALIA. 
rel; of a yellowish grey; fore-arms, legs, and the four extremi- 
ties of a yellowish fawn-colours; end of the nose black. 
Those of the American monkeys, whose tails are not at all pre- 
hensile, are called Saxis.(1) Several of them have that appendage 
long and tufted, whence they have been also termed Fox-tailed Mon- 
keys: their teeth project forwards more than those of the others. 
They are the Prrueoia of Desmarets and Illiger. 
Simia pithecia, L.; Buff. XV, 12; Pithecia inusta, Spix, pl. 
10. (The Yarke.) Blackish ; circumference of the face whi- 
tish. 
Pith. hirsuta, Spix, pl. 8. (The Grey Sakis.) Grey hands; 
yellowish. 
Simia satanus, Hofmansegg; Humb. Obs. Zool. L. xxvii. 
(The Black Saki.) All black. 
Pith. rufiventris, Geoff.; Buff. Supp. VII, 31; Pith. eapilla- 
mentosa, Spix, pl. 2. (The Red-bellied Saki.) Brown, with 
a red belly. 
Spix distinguishes those species whose tails, although tufted, are 
shorter than the body, by the name of Bracuiurus. His Br. Oua- 
raki, Sp. pl. 8, has a fawn-coloured body; head, neck, arms and 
feet black. To this should be referred, provided always it is ano- 
ther species, the Sim. melanocephala, Humb. Obs. Zool. p. 293 yel- 
low, with a black head. 
In some, also, the Catrirurrx, Geoff. or Sagouins, Fr. Cuv. the 
tail is slender, and the teeth do not project. The Saimiri were 
associated with them for a long time, but the head of the Sagouins 
is higher, and their canine teeth much shorter. Such are the 
Call. personata, Geoff., Spix, pl. 12.3 Call. nigrifrons, id. 15. 
(The Masked 1} Wieey:5 A yellowish grey; head and hands 
black. 
Call. lugens; S. lugens, Humb. (The Widow Monkey.) 
Blackish, with alarge white gorget or neck-piece. The Call. 
“amicta, Geoff., Sp. pl. 13, and the Call. torquata, Hofmansegg, 
can differ but little from this species.(2) 
h 
(1) All the American monkeys whose tails are not prehensile, together with 
the Quistitis, are termed by Buffon Sacourns (Cattirarix, Erxl.). This name 
of sagouin or gagut is in fact applied in Brazil to all the little Quadrumana, whose 
tails are not prehensile. . * 
N.B. M. Geoff., Ann. Mus. XIX, 112, 113, gives to his Callithrix, which are 
merely a division of those of Erxleben—WNocthorus and Pithecia, the common name 
of Geopithecus. i ‘e 
(2) Add Call. melanochir, Pr, Max.—Cy ‘cinerascens, Spix, pl. 14, is the young of 
the same Sa to Temminck. —C. cupred, Spix, pl. 17. oe gigo, id. pl. 16. 
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