table of genera described in this volume. 
enus Ovibos, . 
Page 
. . . . 46 
“ Georychus, 
... 
. 82 
“ Aplodontia, 
98 
“ Rangifer, . 
Ill 
“ Capra, 
. . . . 128 
“ Dipodomys, 
. . . . 187 
“ Enhydra, . 
. 170 
“ Dasypus, . 
• . ^ , 
. . 22C 
