8 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Superorder MONODELPHIA 



Order EDENTATA. 

 Family BRADYPODIDAE. 



Genus CHOLOEPUS Illiger. 



1811. Choloepus Illiger, Prodr, syst. raamm. et avium, p. 108. 

 Type. — Bradypus didactyhis Lixxaeus. 



* Choloepus hoffmanni Peters. 



1858. Choloepus hofmanni Peters, Mouatsber. k. preuss. 



Akad. Wissenscli. Berlin, p. 128. 

 1885. Cholopus hoffmanl True, Proc. U. S. nat. mus., vii 



(1884), p. 588. 1885. 

 Type locality. — Costa Rica. 



Genus BRADYPUS Linnaeus. 



1758. Bradypus Lix'xaeus, Syst. nat., x ed., i, p. 34. Type. — 

 Bradypus tridactylus Lixxaeus. 



* Bradypus castaneiceps (Gray). 



1871. ArvAopWuicus castaneiceps Gray, Proc. zool. soc. Lon- 

 don, p. 444. 



1882. Bradypus castaneiceps Alston, Biol. Centr.-Amer., 

 mammals, p. 184. 



1885. Bradypjus castaneiceps True, Proc. U. S. nat. mus., 

 VII (1884), p. 588. 1885. 



Type locality. — Chontales, Nicaragua. 



*fBradypus infuscatus Wagler. 



1831. Bradypus infuscatus Wagler, Isis, p. 611. 



