498 



ZOOLOGY 



SECT. 



iug the manus an efficient digging organ. The toes of the hinJ- 

 foot, four or five in number, are sub-equal, and provided with 

 moderate-sized claws. In walking, the weight of the body rests 

 on tlio dorsal surfaces of tlie second, third and fourth digits of the 

 manus and on a thick callous pad on the extremity of the fifth, 

 and, iti the pes, on the entire pkmtar surface. The tail is always 

 very long, and is sometimes prehensile. The body is covered with 

 long hair. In the Two-toed Anteater (Cydoturus) the muzzle is 



Fig. 1113.— Unau, or Two-Toed Sloth (Cholcepus didaclylus). 

 (After Vugt aud Speulit.) 



short ; there are four toes in the manus, of which the second aud 

 third only have claws, that of the third being the longer ; the pes 

 has four sub-equal, clawed toes, forming a hook not unlike the 

 foot of the Sloths ; the tail is prehensile. 



In the Armadillos {Dasypodida', Fig. 1114) the head is com- 

 paratively short, broad and depressed. The number of complete 

 digits of the fore-foot varies from three to five; these are pro- 

 vided with powerful claws, so as to form a very efficient digging 



