ii. 251

DIPSADIDÆ, ii. 379

_Dipsadoboa_, ii. 379

_Dipsas_, ii. 379

_Diptychus_, ii. 452

_Dipus_, ii. 232

_Dircenna_, ii. 470

_Discina_, ii. 539

DISCINIDÆ, ii. 532

_Discoboli_, ii. 430

DISCOGLOSSIDÆ, ii. 421

_Discoglossus_, ii. 421

_Discognathus_, ii. 451

_Discophora_, ii. 472

_Discura_, ii. 107

Dispersal of animals, i. 10 of mammalia, i. 10 of reptiles and amphibia, i. 28

_Disteira_, ii. 384

_Distichodus_, ii. 445

Distribution, affected by climate, i. 5 affected by physical features, i. 5 contrasts of, in similar climates, i. 5 similarities of, in diverse climates, i. 6 barriers as affecting, i. 6 study of, dependent on a good classification, i. 83 of animals an adjunct to geology, i. 8 of animals requires certain preliminary studies, i. 8 of animals dependent on physical geography, i. 35 of animals, as affected by the glacial epoch, i. 40 of animals, as affected by changes of vegetation, i. 43 of animals, as affected by organic changes, i. 44 of animals, hypothetical illustration of, i. 46 of animals, complexity of the causes affecting the, i. 49 of animals, problems in, i. 51 of plants, as affected by the glacial epoch, i. 42

_Distrigus_, ii. 490

_Diuca_, ii. 284

_Diucopis_, ii. 99

_Diva_, ii. 98

Divers, ii. 366

_Docimastes_, ii. 108

Dodo of Mauritius, i. 282