on ovipositing of locust, [290];

on subimago, [437];

on Thalessa, [554]

Ritsema on Enoicyla, [481]

Ronalds on anglers' flies, [441]

Roux on Necrophilus, [462]

Royal pairs, [377]

Rühl on earwig, [213]

Sacs—see Air Sacs

Sagides, [328]