COSLOGENUS. MAMMALIA. 131 



jecting ; fore-feet with four toes and rudimentary thumb ; 

 hind-legs longer than those before, with three toes and strong 

 nails ; sole of the foot naked and callous. 



D. Acuti, Desm. The Agouti. Fur brown, sprinkled with yellow 

 P or reddish ; ears short ; tail rudimentary ; twelve teats. Nearly 

 two feet long. Brazil Shaw, ii. pi. 126. 



D. cristata, Desm. Fur blackish, sprinkled with red ; hair on the 

 occiput long, and forming a sort of crest _; hair on the croup also 

 long ; belly brown ; ears and tail short. Mam. 358. 



D. Acuschy, Desm. The Akouchy. Fur brown, spotted with yel- 

 low ; croup blackish ; belly red. Twenty inches long. Guiana. 

 Shaw, ii. pi. 126. 



D. Patagonica, Desm. Fur brownish gray, dotted on the back, 

 black on the croup, white on the thighs and belly ; tail very short. 

 Two feet six inches long. Patagonia. Shaw ii. pi. 165. 



D. Viscacha, Desm. Fur dirty white ; sides of the head black ; 

 moustache seven inches long ; body thick and cylindrical j tail 

 naked at tip, but with bristly hairs on the upper part of the re- 

 mainder. As big as a hare ; tail nine inches long Brazil. 



Gen. 114. CCELOGENUS, F. Cuv. Cavia, Lin. 



Incisors f , canines g-g, molars J-f 20. Five toes on all 

 the feet, the external and internal toe behind being nearly 

 rudimentary; nails conical, strong, for digging; cheek-pouch- 

 es ; a naked tubercle in place of a tail ; two pectoral and 

 two inguinal mammae. 



C. subniger, Desm. The Brown Paca. Fur short, blackish-brown, 

 marked on each flank with four or five longitudinal bands of white 

 spots ; head large ; neck short ; ears round. Twenty-one inches 

 long. S. America. Buff. Sup. iii. pi. 35. 



C.fulvus, Desm. (Cavia paca, Geoff.) Like the preceding, but 

 with the ground colour yellowish. S. America An. Mus. x. pi. 9. 



ORDER VII. .EDENTATA. 



No incisors in either jaw ; sometimes canines and molars, or 

 molars only, often no teeth at all ; extremities terminated 

 with toes in number variable, armed with strong nails ; orbi- 

 tal and temporal fossae united. 



The Edentata are quadrupeds without incisive teeth, and form the last order or' 

 unguiculated animals. Although united together only by a negative character, they 

 possess some positive connection in the large nails which cover the extremities of the 

 toes, which approach more or less to the nature of hoofs, and a want of agility, a cer- 

 tain slowness of motion, occasioned by the disposition of their members. 



