MAMMALIA. 
43 
teeth of the upper jaw broader than the lateral ones, isolated 
on each side ; lower incisory teeth elongated, narrow, vertical, 
the lateral ones longest; upper canines conical, of medium 
length, the two inferior ones very small. 
* With the tail annulated. 
Jacchus vulgaris. — The Striated Monkey. 
Plate V. fig- 6. 
• 
Face naked, of a dull flesh colour; ears large, and shaped 
like those of man, with a very long tuft of ash-coloured hair 
before and behind them; body beautifully marked with alternate 
transverse bars of ash-colour and black; shoulders brownish- 
ed; tail long, bushy, annulated with ash.colour and black; 
fingers like the claws of a squirrel, nails sharp. Length, ex¬ 
clusive of tail, twelve inches. Inhabits Brazil. 
** Tail without annulations. 
Jacchus argentatus — The Fair Monkey. 
Plate V. fig. 8. 
Head small and round; face and hands vivid scarlet ; body 
and limbs covered with long snowy-white shining hairs, of sil¬ 
very brightness; tail longer than the body, deep chestnut. 
Somewhat larger than the striated monkey. 
Sub-Genus 2—Tamarin.— Geoffroy. 
The four upper cutting teeth are contiguous, the intermediate 
somewhat broader than the lateral ones ; four under incisors in¬ 
clined, contiguous ; ears large; forehead produced. 
Jacchus CEdipus.— Red-Tailed Monkey. 
Plate VI. fig. 4. 
Upper parts of the body pale reddish-brown, under parts and 
limbs white ; face black; hair on the head white, long, loose, 
and spreading over the shoulders ; lower parts of the back, and 
