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Show 70 MAMMALIA. rei • of a yellowish grey; fore-arms, legs, and the four extremitie: of a yellowish fawn-colour; end of the nose black. Those of the American monkeys, whose tails are not at all pre-henst• l e, are ca1 1 e d s AKI s · (1) Several of them have that a.p pendage long and tufted, whence they have been also termed Fox-talled Mon-keys: theit· teeth project forwards more th.an those of the othet·s. They are the PITHEOIA of Desmarets and Ill.tger: . . Simia pithecia, L.; Duff. XV, 12; Ptthecta tnusta, Sptx, p~. 10 . (The Yarke.) Blackish; circumference of the face wht-tish. Pith. hirsuta, Spix, pl. 8. (The Grey Sakis.) Grey hands; yellowish. .. Simia satanus, Hofmansegg; Humb. Obs. Zool. L. xxvu. (The Black Saki.) All black. . . Pith. ru.fivent1'is, Geoff.; Buff. Supp.' VII, 31; Ptth. capdlamentosa, Spix, pl. 2. (The Red-belbed Saki.) Brown, with a red belly. Spix distinguishes those species whose tails, although. tufted, are shorter than the body, by the name of BRAOHIURus. Hts Br. Ouaraki, Sp. pl. s, has a fawn-coloured body; h~ad, neck, a~·~s and feet black. To this should be referred, provtded always rt rs another species, the Sim. melanocephala, Humb. Obs. Zool. P· 29; yel· low, with a black head. In some also the CALLITHRIX, Geoff. or Sagouins, Fr. Cuv. the tail is sle~der,' and the teeth do not project. The Saimiri w~re associated with them for a long time, but the head of the Sagoums is higher, and their canine teeth much shorter. Such _are th: Call. personata, Geoff., Spix, pl. 12.; Call. nigrifrons, rd. 15. (The Masked Monkey.) A yellowish grey; head and hands black. Call. lugens; S. lugens, Humb. (The Widow Monkey.) Blackish, with a large 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) (1) All the American monkeys whose tails are not prehensile, together with the Ouistitis, are termed by Buffon S.A.GOUINS (CALLITHRIX, Erxl. ). This name of sagouin or "agui is in fact applied in }lrazil to all the little Quadrumana, whose tails at•e not prehensile. N.B. M. Geoff., Ann. Mus. XIX, 112, 113, gives to his Callithri:t, which are merely a division of those of Erxleben-Nocthorus and Pithecia, the common name of Geopithecus. . (2) Add Call. melanochir, Pr. Max.-C. cinerascem, Spix, pl. 14, is the young of the same according to Temminck.-C. cuprea, Spix, pl. 17.-C. gigo, id. pl.16· QUADRUMANA. 71 NocTHORus, Fred. Cuv.-NYcTIPITHEous, Spix. Improperly called .IJ.otus by Illiger. Only differs from the Sagouins in its great nocturnal eyes, and in the ears, which are partly hidden under the hair. One species only is known. Noeth. trivirgata, F1·ed. Cuv., Mammif.; Nyctipith. vociferans, Spix, pl. 18. (The Douroucouli.) Ash-coloured above, yellowish beneath; a black vertical line on the middle of the forehead, and one on each temple. It is a nocturnal animal of South America.(!) They are all from Guiana or Brazil. OuiSTITis.-HAPALE, lllig.-AncToPITHEcus, Geoff. A small genus, similar to the Sakis, and for a long time confounded with them in the great genus of monkeys. In fact, like the generality of the American monkeys, they have the head round; visage flat; nostrils lateral; buttocks hairy; no cheek-pouches, and, like the Sakis in particular, the tail not prehensile. They have only, however, twenty grinders, like the monkeys of the eastern continent; all their nails are compressed and pointed, those of the hind thumbs excepted, while their anterior ones are so slightly separated from the fingers, that it is with hesitation we assign to them the name of quadrumana. They are pretty little creatures, of agreeable forms, and easily tamed. M. Geoffroy distinguishes the Ouistitis, properly so caiied, which he names JAocHus, and whose peculiar characters are pointed inferior incisors, arranged on a curved line, equal to the canines. Their tail is annulated and weii covered with hairs; the ears generally ornamented with a tuft. Sim. jacchus, Lin.; in Paraguay the Titi. (The Common Ouistiti.) Tail tolerably well tufted, coloured in rings of brown and white; body greyish-brown; two large tufts of white hairs before the ears. From nearly every part of South America.( 2) N.B. This name of Gigo or Guigo is given by Pr. Max. to his Melanochir, so that we must consider it generic. (1) Add Nyctipithec.felinus, Spix, pl. 18. • (2) It is difficult to establish very specific limits between Ouistitis of different colours. The Jacch. pen·icillatus, Geoff., Spix, pl. 26, has a white spot on the forehead, and the tufts of the ears brown or black.-His J. leucoceplwlus, Pr. Max.~ lib .. 2, has the same tufts, but the whole head and fore part of the neck are white.-His J. humeralifer has the breast, shou1ders and arms white.-The J. albicolli8, Spix, pl. 25, has the spot on the forehead, tufts of the cars and a large |
