Whirligig-beetle, [215]

White wax, [576], [597]

Whittell, on Pelopaeus and Larrada, [117]

Wielowiejski, on luminous organs, [250]

Wing-cases, of beetles, [186], [270]

Wing, of bugs, [539];

of Diptera, [447];

of Lepidoptera, [315] f.;

development of, [328];

structure of, [329]