82 ItVOICUI TAK.UIASHI: 



iJistnLutiou. — J;ip:ui : TnkjL), etc. 



Myziis woodwardiae Tuk.ili. 



Host plim's. — M'o' nlwurd'iu radiamH ; micly luuu 1 on PJ/jstic/cHin xp. 

 Tlio iiudor siirfjicc'S of tlie twnder leaves, cspeically tlio midribs, are attacked. 

 Tilt) ajiliis has tlie habit of directing the head downwards. Not attended Ijy 

 ants. This aphis may bo seen only from I'ebrnary to April, being very rare. 

 The author has obseiTed some wingless viviparous females ou April 19, 1920, 

 wingless ones and nymphs of winged forms on Feberuary 12, numerous winged 

 adults and some \\ingless cjne? on February 20, and sjmo wingless ones ou 

 February 25, 1!)21, and a few wingless ones on February 8 and 16, a few 

 wingless ones and mau}- winged forms on March 26, and many wingless and 

 winged ones on April 17, ]922, near Taihokn. 



DLstribution. — Formosa : Taihokn, Kwaimonzan. 



Myzus polypodicola Takah. 



Host pliiiit. — Pol iidlchum .sp. T]n> under surfaces of the tender stalks are 

 attacked. 



This species is quitj rare and does not occm- in large numbei-s. A few 

 wingless vivipirous females collected in the mouths of April and May, 1925, 

 and a few nymphs of winged forms in February, 1921, near Tidhoku. 



Distribution. — Formose : Taihoku. 



Myzus hemerocallis Takah. 



(Fi. vir, r,, figs. 11—11) 



Ilo.st ^liint— UcmcrocuUi'i fulv> I. Tlio basal portions of the tender leaves 

 are attacked. Numerous wingless and winged vivipiU'ous females were found 

 on :M;uch 1.3, 1921, no;ii- Taihoku. Not attonded by ants. 



Distribution. — Formosa : Taihoku. 



