744 



Comparative Morphology of Chordates 



Fig. 552. Two-toed sloth, Choloepus hoffmanni. (Two toes in manus, three in 

 pes.) (Courtesy, Flower and Lydekker: " Introduction to the Study of Mammals," 

 London, A. & C. Black, Ltd.) 



Fig. 553. Lesser anteater, Tamandua tetradactyla. (Courtesy, American Museum of 

 Natural History, New York.) 



