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