List of the Insect Fauna of the Countij. 153 



JN. FUMiPENNis, Hart. Gall on Quercus. Common. 

 (N. tricolor, Hart. Gall on Quercus. Eayleigh. 

 N. L^viuscuLus, Sclienck. Gall on Quercus. Maldon, 



Rayleigh. 

 ^N. ALBiPEs, Sclienck. Gall on Quercus. Maldon. 

 (N. NUMisMATis, Oliv. Gall on Quercus. Very common. 

 In. vesicatrix, Sclileclit. Gall on Quercus. Maldon. 



Hymenoptera. Tenthredinid^.. 

 Nematus, Jurine. 



N. GALLicoLA, Westw. {ValUsnieru, Hart.). Gall on Salix. 

 Very common. 



N. ViMiNALis, L. (pedunculi, Hart.). Gall on Salix. Gene- 

 rally distributed, but not. common. 



Cryptocampus, Hartig. 



C. PENTANDR^, Retz. {lueclullarius , Hart.). Gall on Salix. 

 Maldon. 



Lepidoptera. Tineid^. 



Laverna, Curtis. 



L. DEcoRELLA, Stepli. Gall on Epilobium. Generally distri- 

 buted, but not common. 



DiPTERA. CeCIDOMYID^. 



Cecidomyia, Meigen. 



C. BURSARiA, Bremi. Gall on Glechoma. Birdbrook, Widford. 



C. ? CLAusiLiA, Bremi. Gall on Salix. Maldon. 



C. CRATiEGi, Wtz. Gall on Cratcegus. Very common. 



C. Galh, H. Loew. Gall on Galium. Birdbrook, Maldon, 



Rayleigh. 

 C. FOLioRUM, H. Loew. Gall on Artemisia. Grays (W. F. 



Gwinnell). See ' Proc. Essex Field Club,' ii., pp. xvi., xx. 

 C. Persicari^e, L. Gall on Poly ijonum. Burnliam, Canewdon, 



Cricksea, Maldon ; Canvey, Foulness and Wallasea 



Islands. 

 C. PLicATRix, H. Loew. Gall on Rubus. Maldon. 

 C. ? Pruni, Kalt, GaXl on Prmius. Maldon. 



T 



