122 KYOICIII TAKAlI.\Sin 



(Season wlieu tlio insect is common'. 



Near Tailmkii tliis apliis is scjuvo in ninnlxnv5 almost at any season, 

 especially so in July and Aiif!;nst, tlm-iii<^ wliicli niontks it is cxtrouioly difficult 

 to find in the field. 



(Winged vivijiarDns female) 



The vivipuous females are always pmvided with wings. 



(JIale and o\-iparoiis female) 



It is continiujiisly viviparous throughout the j'ear near Taih jku, where no 

 sexual forms have ever been discovere<L 



(Intermediate) 



No interiuediates luive lieen noticed. 



(Hal lit) 



It is sjHiradie in haliit, not being visited l)y ants. 



(Disti'ilmtion) 



Formosii : Taihoku. 



Myzocallis sasae (Mats.) 



(Host pliiut) 



Susa pantctthda : the lower surface of the leaves and the 3'oiiug shoots are 

 attiicked. 



(Season when the insect is common) 



Ke;a- Tokyo this species nia}- be found rather commonly iu moderate 

 nnmbei-s from ^lay to Octol)er. 



(Winged viviparous female) 



Tlie viviparous females ai'e always provided with wings. 



(Intermediate) 



I luive never observcfl any brachypterous forms. 



(^lale and ovipaiX)US female) 



Some winged males and wingless oviparous females were o1>3er\ed on 

 October '21, 1917, nci^r Tokyo. 



(Distribution) 



Ja])an : Tokyo, Sijuxiro. 



