PRELIMINARY LIST OF APHIDIDiE FOUND IN KENT. 21 



S. lanuginosa, Hartig. — Wye, Chartham, Ulcombe, Swanley, Ash- 

 ford, Hothfield, Dartford, Canterbury, Petham. The large galls they 

 form are often very abundant on the elms. 



PEMPHIGIN^. 

 Genus Pemphigus, Hartig. 



Pempliigiis har sarins, Hartig. — Wye, Ulcombe, Ashford, Sitting- 

 bourne, on poplars. The galls are often very numerous. 



P. spiyotheca, Koch.— Wye, 1901, 1907 to 1910, on poplars. 



P. lactuariiis, Passerini. — Wye, Paddock Wood, on roots of weeds 

 and lettuce. 



Genus Tetraneura, Hartig. 



Tctrancura ulmi, De Geer. — Old Romney, 1879 (Buckton) ; Bear- 

 stead, 1905 ; Wye, 1901 to 1910 ; very abundant and doing much 

 harm to young elms, many killed by it. Some galls reached over 

 one inch in length. 



CHERMESIN^. 



Genus Chermes, Linnaeus. 



Chcrmcs corticalis, Kaltenbach. — Wye, on Scotch fir ; Chartham 

 and Hothfield. 



C. abietis, Linnaeus. — Common all over the county on spruce. 



C. laricis, Hartig. — This form of the former is generally common 

 on larch all over the county. 



C. pini, Koch. — Wye, on Finns sylvestris ; Hothfield, 1900. 



C strohilobiiis. — Wye, common on spruce ; Hothfield ; Milton 

 Chapel ; Sevenoaks ; Tonbridge ; Appledore. 



Genus Phylloxera, Boyer de Fonscolombe. 



Phijlloxera quercus, Boyer de Fonscolombe. — Bearstead, 190G, 

 smothering a small oak near railway station ; Hastingleigh, on two 

 small oaks, evidently very destructive ; Wye, on two young oaks in 

 a plantation, both killed by them. 



RHIZOBIIN.E. 

 Genus Forda, Hey den. 



Fonla foiinicaria, Heyden. — Beckenham (Lord Avebury in 

 Buckton). 



Genus Tychea, Passerini. 

 Tychea trivialis, Passerini. — Beckenham (from Buckton). 

 T. setulosa, Passerini. — Beckenham (Lord Avebury). 

 T. sctarice, Passerini. — Beckenham (Lord Avebury in Buckton). 

 T. eragrostidis, Buckton. — Beckenham (Lord Avebury in Buckton). 



Genus Endeis, Koch. 



Endeis pellucida, Buckton. — BeckenJiam (Lord Avebury in 

 Buckton). 



E. carnosa, Buckton. — Beckenham (Buckton). 



