502 MAMMALIA. 



colour, and white ; legs very short. Inhabits Brazil and Para- 

 guay. 



Genus 29. — Dasyprocta. — lUiger. 



Generic Character. — Incisors \, no canines, grinders *— * ; to. 

 tal 20. Head somewhat elongated ; forehead flat ; eyes large ; 

 muzzle thiols ; fore feet with four toes, and a tubercle in place 

 of a thumb ; hind feet longer than those before, with three 

 toes, and long strong nails ; soles of the feet devoid of hair, and 

 callous. 



Dasyprocta Acuti. — The Agouti — Plate XVI. fig. 7. — 

 Fur brown, sprinkled with straw-colour, and reddish, orange 

 on the crupper ; ears short ; tail merely rudimentary. Body 

 about two feet long. Inhabits South America. 



Genus 50. — C^logenus. — F. Cuvier. 



Generic Character. — Incisors |, no canines, grinders ^— | ; to- 

 tal 20. Head obtuse, with cheek pouches ; with five toes on 

 all the feet ; interior and exterior toes very short ; nails strong, 

 conical, and formed for digging ; no tail, but in its stead, a 

 naked tubercle ; teats four, two pectoral and two inguinal. 



Calogenus Sub-Niger. — The Brown Paca. — Plate XVI. 

 fig. 6. — Fur dark yellowish-brown above, paler on the sides, 

 belly dirty white ; sides spotted with white. Nearly two feet 

 long. Inhabits South America. 



ORDER VII.— EDENTATA. 



No incisory teeth in either jaw ; some genera have canines, but 

 others have grinders alone; various genera are toothless ; toes 

 varying in number, and generally furnished with large nails ; 

 orbits of the skull and temporal fossae united. 



The food of this order is various. Some of the genera feed 

 on vegetable substances ; while others live on flesh and insects. 

 Their habits are also various ; but they are in general more or 

 less inactive. 



Tribe I. — Tardigrada. 



The face is short ; having grinders and canine teetn, or grind- 

 ers only ; feet furnished with long and bent nails. 



