162 
APES AND MONKEYS. 
of anger. It began by looking earnestly at him, then it whined, and lastly rocked 
its body to and fro with emotion, crying piteously, and passing its long gaunt arms 
continually over its forehead; for this was its habit when excited, and the front of 
the head was worn quite bald in consequence. At length its master altered his 
tone. ‘ It’s all a lie, my old woman; you’re an angel, a flower, a good affectionate 
old creature,’ and so forth. Immediately the poor monkey ceased its wailing, and 
soon after came over to where the old man sat. Mr. Bates adds that the disposi¬ 
tion of these monkeys is mild in the extreme, having none of the painful, restless 
vivacity of their cousins the sapajous, and none of the surly and untamable temper 
of their more distant relatives, the howlers. 
In the typical form of the red-faced spider-monkey, the thumb is absent. 
There is, however, a monkey similar to it in all respects, with the exception that 
it has a rudiment of the thumb on one or both hands. This monkey, which is 
known as the chameck, and is represented in the figure on the last page, has been 
regarded as a distinct species, under the name of A. subpentadactylus, but it 
seems preferable to consider it merely as a variety of the red-faced spider-monkey. 
Other Species. 
Black-Faced In Eastern Peru the place of the red - faced spider - monkey 
Spider-Monkey. j s taken by a closely allied species (A. ater), in which the face is of 
the same black tinge as the fur. From this feature the species derives its 
distinctive title of the black-faced spider-monkey. According to Dr. Gray, it is 
further distinguished from the red-faced species by the shorter hair on the 
forehead. 
Hooded spider- Passing by one or two species, such as the grizzled spider- 
Monkey. monkey (A. grisescens), we come to a very well - marked form, 
known as the hooded, or black-capped spider-monkey (A. cucullatus), first 
described by Dr. Gray from a single example living in the London Zoological 
Society’s Gardens, of which the exact habitat was unknown, although believed to 
be Colombia. 
This species is distinguished by the length of the flaccid hair, which is of a 
mixture of black and silvery grey in colour; and on the crown of the head is 
elongated, so as to form a large hood, or penthouse over the eyebrows. The fur of 
the hands, the feet, the crown of the head, and the nape of the neck, is deep black; 
while the naked parts of the face are flesh-coloured. 
White-Whiskered The chuva, or white-whiskered spider-monkey (A. marginatus), 
Spider-Monkey. } iag already been incidentally mentioned as found in the Lower 
Amazon valley, to the southward of the river-plains which are inhabited by the 
red-faced species. 
It is of nearly the same size as the reel-faced spider - monkey; but has 
moderately long hair, of a uniform black colour, with the exception of that on 
the forehead and the whiskers, which is white; the face being flesh-coloured. 
As in the last species, all trace of the thumbs has disappeared. It does not appear 
to be common, since Mr. Bates seems only to have come across one pair, both of 
which were shot, while specially searching for it in the valley of the Tapajos 
