THE SAKIS, 187 
Capuchino.” It lives in the most retired parts of the forest, 
where the ground below it is not inundated by the river, and 
feeds on fruits. 
It is said that this animal—unlike the next species—drinks 
freely, always bending down on its hands and putting its mouth 
to the surface of the water, heedless of wetting its beard and 
indifferent to the observation of onlookers. Sir Robert Porter 
says that he never saw it take up water in the hollow of its 
hand, and convey it to its mouth todrink. Its voice is a weak 
and chirping whistle, which becomes shrill and loud when the 

animal is angry. 
A young male of this species, which died in the Zoological 
Society’s Gardens in 1882, presented an abnormal condition. 
The peculiarity consisted, as Mr. W. A. Forbes, the late dis- 
tinguished prosector to the Society, has pointed out in the 
‘“* Proceedings,” in the completely ‘‘ webbed ” condition of the 
third and fourth digits of the manus (hand) on each side, 
these two fingers being completely connected together, down 
to their tips, by a fold of nude skin, and with their nails closely 
apposed, though not connected along their contiguous margins. 
The other digits of the hands, as well as those of the feet, were 
quite normal, the webbing not extending beyond the middle of 
the first phalanx. Mr. Forbes remarks: ‘‘ The case is interest- 
ing, partly as affording an excellent instance of an abnormal 
condition affecting homologous parts of opposite sides in an 
exactly similar way, and partly as showing that the lower 
Primates are subject, occasionally, to a condition of things 
which, as is well known, also occurs not at all rarely in Man.” 
IV. THE RED-BACKED SAKI. PITHECIA CHIROPOTES. 
Stmia chiropotes, Fums.,;Obs. Zool., i., p. 261 (2812): 
