fossil in N. American Miocene, i. 133
in E. Thibet, i. 222
abundance of in the Oriental region, i. 315
Monoceros, ii. [507]
Monodon, ii. [208]
MONODONTIDÆ, ii. [208]
Monoplocus, ii. [390]
Monopterus, ii. [455]
Monotremata, classification of, i. 91
list of Australian genera of, i. 477