Ameiva, [549]
Amnion, a membrane round the embryo, [278]
Amphibia, [3] f.;
definition, [5];
systematic position, [5];
numbers of species, [4]
Amphicondylous, i.e. the occipital part of the skull articulates with the neck by a right and a left knob, [4]
Amphignathodon, [185];
A. guentheri, [188]