On new Mammals from South America. 567 



LXXIII. — New Mammals from South America. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



Alouatta inclamax, sp. n. 



Mycetes niger, Thos. P. Z. S. 1880, p. 394 (nee Geoff.). 



Alouatta cequatorialis, Elliot, Primates, i. p. 274 (partim., nee Festa). 



Fur of medium length. Hairs of crown and forehead all 

 sloping downwards towards the face. 



General colour black. Under surface mixed black and 

 buffy, the inconspicuous lateral mantle cream-buff. Hands 

 mixed black and buffy. Thighs black along their antero- 

 external edge only, their hinder and lower sides conspicuously 

 buffy, contrasting strongly with the general black colour. 

 Lower legs blackish all round ; feet mixed black and buffy. 

 Tail black for three-fourths its length above, its under surface 

 and terminal fourth whitish buffy. 



J lab. Intac, about 50 miles N. of Quito, Ecuador. 



Type. Adult male. B.M. no. 80. 5. 6. 2. Collected 

 July, 1877, by Clarence Buckley. 



Buckley's Intac Howler, the first American, mammal on 

 which I ever had occasion to write, was preserved until 

 recently as a flat skin, and this gave it a certain appearance 

 of abnormality, while its sex was not then ascertainable. 

 Now, however, that it has been remade, the sex becomes 

 evident, while tiie colour proves to be of quite normal distri- 

 bution. I can, however, find nothing to match it exactly, 

 its yellowish thighs and tail-tip and its forwardly-directed 

 frontal hairs distinguishing it readily from the other black 

 Howlers. 



Its relationship is probably with A. caraya * and villosa, 

 but the former has only a trace of yellowish on the thighs, 

 and the latter has none at all. 



Dr. Elliot assigned the specimen to Festa's A. cequatorialis, 

 but that animal is said to be chocolate-brown, and not black. 



Alouatta palliata quichua, subsp. n. 

 The N. Ecuador race of A. palliata. 



General characters as in A. palliata of Central America, 

 but the lateral mantle-hairs much more warmly coloured, 



* By the kind assistance of Mr. Davies Sherborn lam enabled to state 

 that Humboldt's " Tableau synoptique des Singes de l'Ame'rique " ( Rec. 

 Obs. Zool. i. pp. 363 363) was published by the 7th August, L912, while 

 Geoffroy'a "Tableau des Quadrumanes " (Ann. Mus. d'H. N. xix. pp. 85- 

 122) only appeared in the tirst week of October of the same year. Simia 

 caraya, Humboldt, therefore antedates Stentor niger, Geoff. 



