Order ii. Edentata. Edentates. 



Family I. BratlypoAidre. Sloths. 



Genus 6. Choloepus. 



Choloepus Illig., Prodr. Syst. Mamm. et Av., 1811, p. 108. Type 

 Brady pus didactylus Linnaeus. 



17. Choloepus hoffmanni Peters. 



Choloepus hoffmanni Peters, Monatsb. K. Preuss. Ak. Wiss. Ber- 

 lin, 1858, p. 128. Elliot, Mamm. Middle Amer. & W. Indies, 

 F. C. M. Pub., iv, Pt. i, 1904, p. 20, figs. 4, vi. Zool. Ser. 

 HOFFMANN'S SLOTH. 



Type locality. Costa Rica. 



Geogr. Distr. Costa Rica, Central America. 



Genus 7. Bradypus. 



Bradypus Linn., Syst. Nat., i, 1758, p. 34. Type Bradypus tri- 



dactylus Linnaeus. 

 Ignavus Frisch, Nat. Syst. vierfiiss. Thiere, in Tabellen, Tab. 



Gen., 1775. 

 Arctopithecus Virey, Nouv. Dist. Hist. Nat., xxxi, 1819, p. 279. 



Gray, Proc. Zool. Soc., 1871, p. 436. 



18. Bradypus castaneiceps (Gray). 



Arctopithecus castaneiceps Gray, Proc. Zool. Soc., 1871, p. 444. 

 Bradypus castaneiceps Alston, Biol. Centr. Amer., Mamm., i, 1881, 



p. 184. Elliot, Mamm. Middle Amer. & W. Indies, F. C. M. 



Pub., iv, Pt. i, 1904, p. 22, fig. vii. Zool. Ser. 

 CHESTNUT-HEADED SLOTH. Catnaleon in Nicaragua. 

 Type locality. Chontales, Nicaragua. 

 Geogr. Distr. Nicaragua, Central America. 



19. Bradypus infuscatus Wagler. 



Bradypus infuscatus Wagl., Isis, 1831, p. 611. Elliot, Mamm. 



Middle Amer. & W. Indies, F. C. M. Pub., iv, Pt. i, 1904, 



p. 23, fig. 5. Zool. Ser. 



Arctopithecus griseus Gray, Proc. Zool. Soc., 1871, p. 446, pi. xxxvi. 

 DUSKY SLOTH. 



Type locality. Western Brazil. 



Geogr. Distr. Costa Rica, Central America, to Brazil and Bolivia. 



