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DR. J. K. GRAY ON THE BRADYPODIDyE. 



[May 2, 



Skull of Choloepus didactylus. 

 Fig. 2. 



Palate of Choloepus didactylus. 



Var. columbianus. 



A specimen in the Museum, purchased of M. Parzudaki as coming 

 from Columbia, is of a pale whitey-brown paper colour, darker at 

 the root of the hairs, and has pale horn-coloured claws. I believe 

 it is a pale variety of C. didactylus, differing in being of a pale colour 

 and having longer hairs ; but, like the hairs of that species, they lay 

 regularly and form a uniform fur, whereas the hairs in C. hoffmanni 

 are irregularly disposed and scattered in all directions, forming a 

 very rough flaccid long fur. It may be designated, until we have the 

 power of examining more specimens and comparing its bones with 

 other species, C. didactylus, var. columbianus. 



2. Cholcepus hoffmanni, Peters; Gray, Cat. of Edentates Brit. 

 Mus. p. 363. 



A specimen sent by Dr. Peters as a type of this species, and 

 another specimen purchased of Mr. Cariniol, from Costa Rica, as a 



