102 MAMMALIA. BRUTA. Sloth. 



food, Kircher fays forty days : Has vaft flrengtli in the paws, and faftens its claws into any tiling 

 with fuch force that they cannot be difengaged ; hence, when beafts of prey attack this animal, it 

 faftens on them fo ftrongly, that both are often found dead in each others grafp. 



139 2 » Unau. — 2. Bradypus didaffiylus. 2. 



Has two toes on the fore feet, and no tail-. Muf. Ad. Fr. 4. Schreber, ii. 200. tab. lxv. 1 



Bradypus didactylus, having two toes on each fore foot, and three on the hind feet. BrifT. quad. 

 22. — Tardigradus, from Ceylon. Seb. muf. i. 54. t. 33. f. 4. and t. 34. f. 1. — Unau. Sm. Buff. vii. 

 150. pi. ccxii. — Two^toed floth. Penn. hift. of quad. n. 360. 



Inhabits South America, and, according to fome writers, is likewife found in India. — Lives on 

 fruits and roots ; has a weak fenfe of fmelling, and its light is better adapted for night than day : 

 The body is covered with rufty-brown undulated hair; the head is round, with flat ears ; and it has 

 two paps fituated on the breaft. 



The Count de Buffon infifts that this animal is confined to South America, while other authors 

 inform us that it is likewife found in India and in Guinea. Mr Pennant's authority for faying that 

 it is found in the mountains near Madras, and the information of Bofman and Barbot, that floths 

 are met with in Guinea, are not to be doubted ; but, from the general analogy of the South Ameri- 

 can animals not having been difcovered in the other quarters of the world, I am ftrongly inclined to 

 Buffon's opinion, and fufpect that the Sloth of Madras, mentioned by Pennant, and the Sloth of 

 Guinea, defcribed by Bofman and Barbot, are different fpecies from the Unau, or two-toed Sloth 

 from South America. The hair on the body is long and rough, on fome parts curled and woolly, 

 in fome of a pale red above and afh coloured below, on others of a yellowifh white below and brown 

 above. The length of the fpecimen in the Britilh Mufeum, which Mr Pennant fuppofes young, is 

 eleven inches. This fpecies has forty-fix ribs on each fide, and the Ai only twenty-eight. The Unau, 

 though heavy, and very awkward in his gait, is much more agile than the Ai, and is able to mount 

 and difmount the higheft trees feveral times a-day. There is one very Angular circumftance in thefe 

 two animals, that, inftead of diftinct excretory apertures, there is only one common canal, as in 

 Birds. 



140 3. Kve-toed Sloth. — Bradypus pentadafly'lus. 



Has five toes on all the feet ; and a fhort tail. Hitherto non-defcript. 



Bradypus urfinus, Urfiform ftoth. Natur. mifc. pi. 58. 59. 



There are no fore-teeth in either jaw 4 la each jaw are two tufts, which are included by the 

 lips ; thofe below are about -an inch and a half long, of a -conical or tapering form, ftand forwards, 

 and are a little bent backwards at their ends ; the upper tufts are about an inch longer, are more 

 crooked, and are larger than the lower : There are two principal grinders above, and three below, 

 .on each fide ; thefe are fhort, flat, broad, and obtufely knobbed ; befides thefe, on each fide of the 

 vpper jaw, is one conically pointed finall grinder, and on each fide of the lower jaw are three fuch, 

 which gradually diminifh in fize and length as they advance forwards : All thefe fingle pointed grin- 

 ders, in both jaws, ftand before the large principal grinders formerly defcribed. The body is large, 

 thick, clumfy, and highly arched in the back, and is univcrfally covered with long, harfli, black 



hair, 



