skull, [399]

Hydromedusa, [389], [404];

H. tectifera, [404]

Hydrophinae, [635]

Hydrophis obscura, [636], [636]

Hydrosaurus, [543]

Hyla, [189] f.;

H. arborea, [190] f., [190];

var. meridionalis, [191];

var. savignyi = japonica, [191];