MAMMALS. 



373 



broken into several transverse bands, which move upon 

 each other, so that the animal can coil itself into a ball. 



The sloths are larger forms which, back downward, 

 crawl with the slowest motions along the branches of the 



FIG. 162. Nine-banded Armadillo (Dasypus novemcinctus}. From Lutken. 



trees, holding themselves by their hook-like claws. Upon 

 the ground they walk with difficulty, their long claws 

 being in the way. In geological times there were forms 



FIG. 163. Pangolin (Manis longicaudata). From Monteiro. 



allied to the sloths, but of much larger size. One, the 

 Megatherium of South America, had a skeleton 18 feet in 

 length. Another form, Mylodon, found in North America 



