Order II. Edentata. Edentates. 



Family I. Bradyiiodulit'. Sloths. 



Genus 6. Choloopiis. 



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

 Brady pus didactyhis Linnaeus. 



17. Choloepus hoffmanni Peters. 



Choloepus hofjmanni 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. Brjulypiis. 



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



dactylus Linnaeus. 

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



Gen., 1775. 

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



Gray, Proc. Zool. Soc, 187 1, p. 436. 



18. Bradypus castaneiceps (Grav). 



Arctopithectis 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. Camaleon in Nicaragua. 

 Type locality. Chontales, Nicaragua. 

 Geogr. Distr. Nicaragua, Central America. 



19. Bradypus infuscatus Wagler. 



Bradypus infuscatus Wagl., Isis, 183 1, p. 611. Elliot, Mamm. 

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

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

 Arctopithectis 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. 



