a 



^ 



109 



n ffl g — tmm^-%m "6 



Jt "9 



138 



a Ji M-S^m%« sS»i^ It IS t 

 h%\% 1 146 



;*; Fb^ M 7.—%-:^f\mk'^r^\'^ F>3 

 ü^^.M/|/tamW5'i: 157 



CONTENTS 



M. Hon — Tow new species of aphids 

 [)arasitic on poplar in Hokkaido 

 I09 



T. XJchida — Beschreibung einer neuen 

 Galtung der Ichneumoniden(Hym.) 

 It6 



N. Hiratsiika — Additional notes on the 

 Melainpsoraceae of Saghalien 119 



H. Eono — Ueber 2 neue Gattungen von 

 RJiyncIdtimn und ihre I.ebenswei- 

 sen {^Col. C'uir.) 122 



K. Eiiribayashi — The ascigerous stage 

 of Helminthosporium sativum 138 



M. Hiura — Studies on some downy mil- 

 dews of agricultural plants I. . . 146 



Y. Homma — A statistical study on the 

 biological forms of Erysiphe gra- 

 minis DC iS7 



SCV^ 



