28 K. Tak-iihashi. 



( -re neral colour green, cornicles green. Winged females provided 



with alioLit 20 sensoria on the -Ith nnti'imal joint 



A. oleraceae (y. d. Qoot.) 



Aviphorophora oleraceac (v. d. Goot). 



llhopalosiphum oleraceac. v. d. Goot, Contril). Fauna Indes Neer- 

 land. vol. 1, Fasc. iii, p. 40(1917). 



Hhopalosiphum lactucae. Maki, Dull. Agr. p]xpt. St. Formosa, No. 

 103, p. 22(1913). 



Hosts. — Lactuca debilis ; Sonchus sp. 



Distribution. — Formosa (Taihoku, Kannonzan): Java (v. d. < i.). 

 Hitherto unrecorded from Japan. 



The Formosan specimens agree so well with the original descrip- 

 tion that I have no hesitancy in so designating them. 



Amphorophora indwum (v. d. Goot.) 



Rhopalosiphum hidicum. v. d. Goot, Records of Indian Mus. xii, 

 pt. i, No. 1, p. 1 (1916); Essig and Kuwana, Proc. California Acad. 

 Sciences, 4th ser. vol. viii, No. 3, p. oo (1918). 



Rhopalouphum miniatum, Matsumura, Trans. Sapporo Nat. Hist. 

 Soc. vol. vii, pt. i, p. 12(1918). 



Host. — unknown in Formosa. 



Distribution. — India (v. d. (root); Japan (Tokio. Hokkaido); 

 Formosa (Arisan). 



Collected b^^ Messrs. Sonan and Yoshino in Oct. 1918. 

 Hitherto unrecorded rrom Formosa. 



Near Tokio this plant louse is found on tiie twigs of Kuscaphis 

 japonica and Staphylea bumalda. Ihe winged viviparous females 

 appear only in the 2nd, 3rd and Itli generations. 



The males are winged or wingless and many immediates also 

 occur. 



