1 76 PROC. ENT. soc. WASH., VOL. 21, NO. 7, OCT., 1919 



1917 many wingless viviparous females which do not produce 

 dimorphs at all in August and in September. Winged females 

 appear only in spring. 



Chaitopjorinella kuwanaii, n. name. 



Chaifophorus japonica Essig and Kuwana, Proc. Cal. Acad. Sci., vol. VIII, 

 No. 3, p. 83 (preoccupied by japonica Baker). 



The host plant is Acer pictum. The stem-mother is wingless 

 and some of the females of the second and third generations and 

 the sexuparae have wings and the other females are wingless. 

 The dimorphs, margined with lamellae, are produced by the 

 females of the second and third generations. In summer the 

 wingless viviparous females can be seen. I have not seen the 

 dimorph described by Dr. Baker. 



Stomaphis yanonis Takahashi. 



S. yanonis Takah., Zool. Mag. Tokio, vol. XXX, p. 368, 1918. 



In 5. quercus L. winged females appear three times in a year, 

 but in 5. yanonis Takah. only some individuals of the second 

 generation have wings usually. As is characteristic of Stomaphis 

 the male is apterous and its rostrum is rudimentary. The stem- 

 mother, as well as the male, is without cornicles. 



Host. Celtis sinensis. 



Rhopalosiphum sambucicola Takahashi. 



R. sambucicola Takah., Zool. Mag. Tokio, vol XXX, p. 372, 1918. 



This species is closely related to R. magnoliae Essig et Kuw. 

 The species spends the winter and early spring on Sambucus 

 racemosa, but the summer on Dioscorea japonica, Lagerstroemia 

 indica, Celastrus articulatus and Citrus sp. 



(Actual date of publication October 13, 1919). 



