1 62 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. subi^entadactylus, 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. 



Wnite- Whiskered The chuva, or white- whiskered spider-monkey (A. marginatus), 

 spider-Monkey. h as a l reac iy 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 red-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 



