Walsh on galls, [531]

Wasmann on St. Augustine's works, [565]

Wattenwyl, Brunner von—see Brunner

Weismann, on caste, [500];

on metamorphosis, [162], [166];

on imaginal discs, [167]

Westwood, on Forficula, [204];

on Helicomitus larva, [460], [461];

on Lachesilla, [395];

on Scleroderma, [536]