CONTENTS 



CHAPTER PAGE 



I. INTRODUCTION - - I 

 II. GALLS CAUSED BY SAW-FLIES AND GALL - WASPS 



(HYMENOPTERA) - - - - l8 



III. GALLS CAUSED BY BEETLES (COLEOPTERA) - 46 



IV. MOTH GALLS (LEPIDOPTERA) - - 53 

 V. GALLS CAUSED BY FLIES (DIPTERA) - - 59 



VI. GALLS INDUCED BY PLANT-LICE (HOMOPTERA) ^J^ 



VII. GALLS CAUSED BY MITES (ACARI) - - - 9? 



VIII. EELWORM GALLS (NEMATODA) - - X06 



IX. GALLS CAUSED BY FUNGI AND MYCETOZOA II4 



CATALOGUE OF BRITISH PLANT-GALLS 1 27 



BIBLIOGRAPHY - - - - - 253 



DESCRIPTIONS OF THE PLATES - - - - 260 



INDEX - - 267 



Xlll 



