134 



INDEX 



Water-insects. See Aquatic in- 

 sects 



Weevils, 55 



Weismann, A., 38, 42, 102 



White Butterflies, 41, 83, 85, 

 100-3 



Willow-beetles, 53 



Wingless insects, 15, 18, 20, 96, 

 115 



Wing-rudiments, 13, 18, 20, 22, 

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

 117-19 



Wings, 1, 14, 115, 119-20 



Winter broods, 102-3 



Wintering stages, 93-101 



Wireworms, 52, 93 



Wood-wasps, 65 



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



