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Show 187L] MR. E. BARTLETT ON PERUVIAN MONKEYS. 219 3. LAGOTHRIX INFUMATUS*. Brown Lagothrix. This large Monkey is found on the rivers Ucayali and Huallaga> and over the whole of the valley of the Peruvian Amazons. It is very common in the forests in the low country. They are met with in pairs ; sometimes from four to six pairs are found to inhabit the same large trees. Not unfrequently they are in company with the Mycetes. These Monkeys are much sought after for food; and from their great abundance are extensively used for this purpose by both Indians and whites. 4. MYCETES SENicuLUsf. Golden Howler. This Howler furnishes the principal animal food used by the of the borders of the rivers Ucayali and Huallaga. These Monkeys keep to the low lands and the shores of the rivers, always travelling in pairs. When a Mycetes is shot it always hangs to the tree, even if quite dead, and does not fall down until some hours afterwards, when the muscles become relaxed. Therefore, if fresh food is an immediate object, it is better to kill a Layothrix, in which this peculiarity does not occur. 5. SAIMARIS USTUS, IS. Geoffr. This is a common species, inhabiting the whole of the Peruvian Amazons, and may be met with on every stream. They are frequently seen moving about in large numbers through the forest. 6. CALLITHRIX CUPREA, Spix*];. Red Tee-tee. This Monkey is equally widely distributed, but not so numerous, * [Mr. Bartlett has submitted four skins of this species to my examination. In those marked males the size is rather larger, the black hair on the breast and belly much more developed, and the back more greyish. The skins measure: - l J Long. corp. 25 une, caudas 23 une, tota 48-0 une. 2. %..>.. „ 24 „ „ 22 „ „ 460 „ 3. % „ 20 „ „ 23 „ „ 43*0 „ 4. Jjr „ 20 „ „ 23 „ „ 43-5 „ I do not doubt this being the Gastrimargus infumatus of Spix; and as they were obtained in the same district as Lagothrix castelnauii of Is. Geoffroy and Deville (Casteln. Exp. p. 5, pl. 1), I a m inclined to agree with Wagner (Saugeth. v p 73) in considering the latter not really distinct.-P. L. S.] ' t IT consider Simia ursina of Humboldt (established on specimens from Caraccas) to be identical with the species commonly called Mycetes seniculus (i. e. M. saturate castaneo-rufus unicolor; dorso medio fulvo). But Mycetes ursinus of P M a x and other authors, of the wood-region of S.E. Brazil, is certainly different, and should be called M. fuscus (cf. Wagner, Abb. bay. Ak. v. p. 409). M r Bartlett's skin from Chamicuros seems to m e to be referable to the true M seniculus a species not heretofore certainly known to extend into Eastern Peru. But Mr. Bartlett tells m e this is the only Mycetes which he met with.- ' + IT consider Wagner (Saugeth. v. p. 114) quite right in referring C. discolor of Is. Geoffroy to C. cuprea of Spix. Spix gives the Upper Amazons, frontiers of Peru as its locality. Deville's specimens of Callithrix discolor were obtained from Sarayacu and other places in the same district as that which Mr. Bartlett has collected in.-P. T. S.] |