ii. 539
_Dentex_, ii. 426
_Dercas_, ii. 478
_Dermatemys_, ii. 408
_Dermatocera_, ii. 520
_Dermatochelys_, ii. 409
_Deroptyus_, ii. 328
_Dermognathus_, ii. 413
Desert-snakes, ii. 377
Desman of S. Russia, figure of, i. 219
_Desmodus_, ii. 182
_Deudorix_, ii. 477
_Diadema_, ii. 474
_Diagramma_, ii. 426
_Dibamus_, ii. 372
DIBRANCHIATA, ii. 505
DICÆIDÆ, ii. 277
_Dicælus_, ii. 490
_Dicæum_, ii. 277
_Dicallaneura_, ii. 475
_Dicamptodon_, ii. 413
_Diceratherium_, N. American Tertiary, i. 137
_Dicerca_, ii. 496
_Dicerobatis_, ii. 463
_Dichobune_, European Eocene, i. 126
_Dicotyles_, N. American Post-Pliocene, i. 130 N. American Tertiary, i. 137 in Brazilian caves, i. 144 S. American Pliocene, i. 146 birthplace and migrations of, i. 155