134 INDEX 



Water-insects. See Aquatic in- Wing-rudiments, 13, 18, 20, 22, 

 sects 24, 28, 33, 36-8, 40, 111, 115, 



Weevils, 55 117-19 



Weismann, A., 38, 42, 102 Wings, 1, 14, 115, 119-20 



White Butterflies, 41, 83, 85, Winter broods, 102-3 



100-3 Wintering stages, 93-101 



Willow-beetles, 53 Wireworms, 52, 93 



Wingless insects, 15, 18, 20, 96, Wood-wasps, 65 

 115 





CAMBRIDGE : PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS 



