254 CLASS MAMMALIA. 



mammiferous animal known which has nine 

 cervical vertebra?. 



The Unau (Brady pus Didactylus, L.), Buff. XIII. i. 



Which has only two nails on the fore-feet, and 

 no tail ; is rather less unhappily organized 

 than the Ai. Its arms are not so long; the 

 clavicles complete. There are not so many 

 bones attached in the feet and hands; its 

 muzzle is elongated, fyc. It is less by one-half 

 than the Ai, and of an uniform gray-brown, 

 which sometimes assumes a reddish tint. 

 These two animals are originally of the hot parts 

 of America. They would probably have been de- 

 stroyed long since by the numerous Carnassiers of 

 this country, if they had not some defence in their 

 long nails*. 



Dr. Shaw, Gen. Zool., has described under the 

 name of Bradypus Ursinus (Prochilus, 111.) an 

 animal indigenous in India, brought alive to 

 England, of the size and nearly of the form of 

 the Bear, with five toes armed with nails on all 

 the feet, without incisors, with canines and 

 molars ; but they are unequal among them- 



* It is singular that the Two-toed Sloth was not known before 

 Seba, and that it was for a long time obstinately referred, on the 

 authority of that ignorant collector, to Ceylon. Erxleben has 

 maintained that it belonged to Africa, because he took the Poto of 

 Bosman, which is a Galago, for it (See this last genus). The fact 

 is, that the Unau comes only from South America. 



