wing, [206];

the name, [214]

Eaton, on nymph, [157];

on Ephemeridae, [435], [437], [440]

Ecdysis, [156], [162];

nature of, [169]

Ectobia, [236];

E. lapponica, egg-capsule, [229]

Ectobiides, [240]

Ectoblast, [149]