WHISKERED YARKE. Pithecia mfiventer. 



PLATE 11. 



Pithecia pogonias, Gray, Ann. and Mag. Nat. Hist., vol. x. p. 356 ; Zool. Voy. H. M. S. " Sulphur," Mammalia, 



t. ; List Mam. Brit. Mus. 1843, 13. 

 Pithecia ruUventer, 1. Geoff. MSS. Mus. Paris, 1845. 



The species of Yarkes having been very much confused, I attempted to unravel them in the ' Zoology of the 

 Voyage of H. M. S. Sulphur,' and gave figures of the more characteristic parts of the three species con- 

 tained in the British Museum collection. Since the publication of that essay, on examining the Paris 

 collection, I have found that the Pithecia Momclms of GeofFroy the elder, which has long been a riddle 

 to zoologists, was established on a very young specimen of the species which I have described and figured 

 in the 'Zoology of H. M. S. Sulphur' under the name of P. irrorata\ the former name should in justice 

 be reinstated. Professor Andrew Wagner, in Erichson's Archives for 1844, says that it is the same as 

 the P. hirsutus of Spix ; and as he resides in Munich, where Spix's specimen is preserved, probably his 

 determination is right, though it disagrees in several particulars with both the figure and description of 

 that author. 



Dr. Andrew Wagner, in the same work for 1843, states that the species here figured is only a young 

 mEile or female of P. leucocephalus, but this is evidently a mistake, as we have in the British Museum col- 

 lection both sexes, and old and young of both species, and the Whiskered Yarke is not uncommon in 

 collections of Brazilian animals sent to this country for sale. 



RED MACAUCO. Lemur mfus. 



PLATE IIL 



Lemur ru/us, Audeb. Makis, 12. fig. 2. — Cop. Schreb. Saugth. t. 39 c. — Geoff. Ann. Mus. xix. 160. 

 Inhabits Madagascar. 



This is one of the most distinct species of this very difficult genus. It appears to be doubtful, if great 

 part of the difficulty in distinguishing the various specimens from one another, does not arise from the 

 species breeding together with facility. 



YAGOUARONDI. Leopardus Yagouarondi. 



PLATE IV. 



Felis Yagouarondi, Lacep. — Griffith, A. K. t. 86. f. 2. — Darwin, Zool. Beagle, 16. t. 8. 

 Felis Darwinii, Martin, Proc. Zool. Soc. 1837, 3. 

 Leopardus Yagouarondi, Gray, Cat. Mamm. Brit. Mus. 42. 



This is the tropical representative of the Puma. 



This species, though it appears to be simply grisled by the pale tips to the hairs, when viewed in an 

 oblique direction shows distinct indications of spots, and like the Puma and other plain-coloured Felinse, is 

 distinctly spotted when first born, the spots becoming more indistinct when the fur is first changed. 



The white band across the sides of the loins, which was so distinctly exhibited in this specimen, appears 

 to be formed by some peculiar arrangement of the hair, as it was only visible when the animal was sitting 

 erect. 



The E?/ra {Felis Eyra^ Desm.) is much smaller, pale red, and not grisled. 



OS! 



