167 



Mylodon and its congeners to the different families of the Edentate order, since 

 these have been so fully elucidated in the comparisons of the several parts of 

 their skeletons. They establish the general conclusion that the existing arboreal 

 and extinct terrestrial Sloths constitute a primary division or tribe of the order 

 Bruta or Edentata, equivalent to the tribe Loricata, or Armadillos, and to the 

 true Edentata, or the Ant-eaters and Paugohns. 



The teeth and jaws give the essential character, and govern the ahment of the 

 new primary group, of which the name Phyllophaga, here proposed, indicates 

 the characteristic and peculiar diet. 



The characters of the tribe, of its families and genera, and of the extinct 

 species especially noticed in the present Memoir, are given in the subjoined 

 Synoptical Table. 



