2Jg r.YOKIII lAKAIIVSUt: 



Cirpinus /a])Ohtcfi : n fow wii)fj?!(l forms collected on this plant on Juno 

 5 iiutl (), 1919, nenr Tok^'o, stHJiu also to lx;lous t) this sixties. 



llio ovip.irous fonitilcs avo ])rovi(liHl with winjjis, likt; tliost; ni Grcenidea 

 Jcuwuu'ii (Porjj;.), tlu; males luivin^ never lieen obs'.nved. 



Eiitrichosiphiim lithocarpi (^lakij 



Host ])laut. — Lil/i<K-arpufi uraiawi. 



llie win}i;ecl aud wingless vivijiarous feiunles were ol>sened__, in 'gi'eat 

 al>nu lance on the young shoots and Kmivos on October 2, 1921, at Urai, ue;ir, 



Taihokn. 



Eutrichosiphum minutum Takah. 



Host pk-iut. — Tr chdospcriumn j<(Hininoi(hs. 



The wiiigi^l and wingless viviparous feiLalos were, observed in large 

 inuiiLei'S on the under sm'faci> of the leaves and the stallcs on March 20, at 

 Kagi, and ou iSlarch 23, 1921, at Kwanshirei, Formosa. 



Eutrichosiphum pasaniae (Okaj.) 



Hist plants: Qmrcus cw^pldidi, Qucrciw up. 



Near Tok^'o this apliLs uiay he commonly seen fro.u June to Ocbjher 

 occasionally occurring in rather largj numliei-s and the wingtxl forms are pro- 

 duced rather ct>nnnouly. The winged ma,les make their api3earauce from ii,lx)ut 

 loth da\' of October on. The ovi[):irons females are probably provided with 

 Aving? as in Grcoddc lanoawd and G. kuv.korinis. 



Cervaphis quercus Takah. 



(ri. \', 13, fig. i\) 



(Host plant) 



Qiurctis viiri'ddU.s : the lower surface of the youug leaves and the tender 

 ehool:^ are atttuiked. 



(Se.'isou when tlie inscH-t is abundant) 



