THE LIFE OF MAMMALS 
ing from the night monkeys in little except in having bristly 
hairs among the fur, smaller eyes and more bushy tails, are 
“diurnal animals, arboreal and gregarious, noisy and agile, 
living on fruit, insects, birds’ eggs, and even small birds. They | 
range all over South America, from Panama to the southern 
limits of the forested regions.” They are dull-witted and 
rarely tamed. There are a dozen or so species, mostly grizzled 
red or else black with red and white markings. 
The squirrel monkeys, or “‘saimiris,” are a small group much 
like these teetees, — looking truly like squirrels, — and very nu- 
Teetees merous from Costa Rica to Bolivia. The commonest 
and Squit- one is only about ten inches long, but its tail meas- 
eye ures fourteen inches; and is yellowish gray with a 
dark head and a comical little black-and-white face with tufted 
white ears. Baron Humboldt thought no other monkey had so 
much the physiognomy of a child; its sudden changes from joy 
to sorrow, and vice versa, were very infantile, and when seized 
with fear its eyes became suffused with tears. One that Hum- 
boldt had was extremely fond of spiders and insects, and would 
try to pick up figures of wasps, etc., when shown them in a 
book, although uncolored. The same story of eager recogni- 
tion of a picture is told of the silky tamarin by Geoffroy St.- 
Hilaire. They will steadfastly watch the mouth of a person 
speaking, and if allowed to sit on their master’s shoulder will 
frequently touch his lips, tongue, or teeth. They live in large 
flocks, and in a rain sit huddled in close groups, with their 
tails wrapped around each other, and are so miserable that 
then the Indians have no difficulty in shooting them with their 
small poisoned darts. 
This brings us to the end of the family Cebide, and there 
remains only the small family Hapalide, characterized dis- 
Marmo- tinctively by having only thirty-two teeth, and includ- 
std ing the tiny tamarins and marmosets, which are 
hardly separable and connect the monkeys with the lemurs. 
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