LIST OF PLATES. 



1. A birch-tree in Broomham Park, Hastings . Frontisp, 



2. Glands on petioles of leaves of Prunus avium 



3. Thickened roots, or pseudo bulbs of grass 



4. Stem of Betula alba, with aborted branches . 



5. Collecting impedimenta used by the author . 



6. Apparati employed by the author when photographing 



7. Bottles, etc., used for rearing makers of galls 



8. Brassica Napus, galled by Ceuthorhynchus sulcicollis 



9. ,, rutabaga 



12. Pyrus Mains 



13. Potentilla reptans 



14. Corylus Avellana 

 i;. .. .. 



16. Betula alba 



Populus tremula 

 Salix Caprea 

 „ cinerea 



Galium verum 

 Salix Caprea 



Schizoneura fodiens 

 Xestophanes potentill<E 

 Eriophyes avellanae, var. 



Saperda populnea 

 Agromyza schineri 



Cecidomyia galii . 



,, saliciperda 



,, cinerea ,, ,, salicis 



Sisymbrium officinale, galled by Cecidomyia sisymbrii 



Tilia grandifolia 

 Rubus fruticosus 

 Arundo Phragmites 

 Carduus arvensis 

 Abies excelsa 

 Pyrus Mains 

 Populus alba 

 Pinus sylvestris 

 Hieracium sylvaticum 



tuise . 

 Lasioptera rubi 

 Lipara lucens 

 Urophora cardui . 

 Adelges abietis . 

 Schizoneura lanigera 

 Hedya aceriana 

 Retinia resinella . 

 Aulax hieracii 



