4-30 MAMMALIA. 



eulated grinders; no cheek pouches; nostrils opening on the 

 sides of the nose ; partition broad ; tail long, generally prehen 

 Bile ; hinder parts hairy, without callosities. 



Section 1st. — Sapajous Tail long and prehensile. 



Genus 8 — Ateles Geoffroy. 



Generic Character. — Incisory teeth \ ; canines }~} ; grinders 

 8-6 ; facial angle 60 degrees ; ears bordered ; extremities very 

 long and slender ; the anterior ones generally tetradactyle ; no 

 thumb, but sometimes replaced by a wart ; tail very long, and 

 strongly prehensile ; the under part, towards the point, naked. 

 Bring forth but one at a birth. 



* With a very small nailed thumb on the anterior hands, or a 

 rudimentary nailiess thumb. 



Ateles hypoxanthus Desmarest. — Face skin-coloured, with 



gray spots ; fur grayish-fawn colour ; hinder parts, yellow rust 

 colour; thumb short and strong. Two feet long, tail the same. 

 Inhabits Brazil. 



** With no vestige of a thumb on the anterior hands. 



Ateles paniscus.—THE Coaita. — Plate V*xfig. 7. — The 

 face flesh-coloured, and the whole body of a uniform black ; 

 !t has no thumbs on its hands ; but, instead of these, there are 

 very small projections or appendices; the tail prehensile, naked, 

 ; nd has a second covering of a very delicate and sensitive skin, 

 highly susceptible of touch. Inhabits South America; com- 

 in on in the woods of Brazil and Guiana. 



Genus 9. — Lagothrix. — Humboldt. 



Generic Character. — Incisory teeth J, canines }-J, grinders 

 f-^l ; total 36. Facial angle 50 degrees ; head round ; muzzle 

 projecting ; limbs proportioned to the body ; anterior hands fur- 

 nished with nails, divided with a thumb. Tail strongly prehen- 

 sile, with the lower part of the extremity naked ; hair of a 

 woolly texture. 



Lagothrix Humboldlii. — The Capparo. — Hair long, of a black- 

 ish ash-colour ; body twenty-eight inches ; tail nearly thirty inches. 

 Inhabits the banks of the River Guariara, South America. 



