Amnion cavity: a tube-like insinking from the ventral plate of the embryo, extending cephalad.
Amnion fold: the extensions of the amnion which close the mouth of the amnion cavity in the embryo.
Amnios: the first cast skin of the larva when a moult occurs almost immediately after emergence from the egg.
Amoebiform: having the appearance or properties of an amoeba.
Amoeboid: applied to movements similar to those of an amoeba.
Amphibiotica: those pseudoneuropterous insects whose larvae are aquatic but whose imagos are aerial; stone-flies; May-flies; dragon- flies.
Amphimixis: the mingling of the germ plasm of two individuals.
Amphiodont: applied to those forms of male Lucanids bearing mandibles of medium size, between teleodont and priodont; =mesodont.
Amphipneustic: applied to larvae which have the spiracles confined to the anterior and terminal segments.
Ample: broad; large; sufficient in size.