Genital organs, of Amphibia, [48] f., [49]

Genyophryne, [236];

G. thomsoni, [236]

Genyophrynidae, [141]

Genyophryninae, [139], [236]

Geographical distribution, principles of, [69] f.;

regions and sub-regions, [74] f. (for details see also Maps);

of Apoda, [89];

of Urodela, [95], [96];

of Anura, [143], [161], [167], [185], [239];