5. Macrosiphum syringae n. sp. 



Winded viviparous female — rj)iity )'ello\v, antennae, except the basal 2 joints, 

 and posterior iuilf of the abdomen, fuscous. Antennae slender, the 3rd joint, with 

 about 8 sensoria, at the base fulvous, the 4th distinctly longer than the 5th; an- 

 terhinarial about 3 \. times as long as the postrhinarial. Wings hyaline, with a 

 light fulvous tinge, veins, except cubitus, fuscous, costa and stigma [)ale fulvous, 

 2nd furcal nearly at the middle of the lust. Cornicles dirty j^ellow, at the apices 

 infuscated, as broad as the posterior tibia at the base; cauda short, conical, much 

 longer than wide. Legs fuscous, coxae, trochanter and femora, except the apices, 

 yellowish. 



Length — 2.5 mm.; antennae 3.5 mm.; exp. 8.5 mm.; cornicles 0.5 mm.; 

 cauda 0.2 mm. 

 Apterous viviparous female — Differs from the winged viviparous female as 

 follows : 



The 3rd antennal joint lacks sensoria, the 4th subequal to the 5th; ante- 

 rhinarial about 4 times as long as the postrhinarial. Legs fulvous, femora at the 

 extreme apices, both ends of the tibia, and the tarsi, fuscous. 



Length — 2.^ mm.; antennae 3 nun.; cornicles 0.5 mm.; cauda 0.2 nun. 

 Hab. — Hokkaido (Sapporoj ; on the 18th, June, 1917, collected by the 



author. 

 F. P. — Syniiga amureiisis ; gathering on the under surface of the leaves. 

 Nom. Jap. — Hashidol-lugenagaabiira. 



6. Macrosiphum sorbJ. n. sp. 



iJirty yellow, abdomcji on the sides somewhat infuscated. The 3rd antennal 

 joint on the outer side witli about 14 sensoria, the 4th and 5th subequal, lacking 

 sensoria; anterhinarial about 3^ times as long as the [)ostrhinarial ; basal 2 joints 

 and extreme apices of the other joints, except the 6th, somewhat infuscated. 

 Wings hyaline, with a pale fulvous tinge, veins brownish, stigma grayish, 2nd 

 furcal nearly at the middle of the first. Cornicles fuscous, at the apices paler, at 

 the bases somewhat broader, nearly as broad as the tibiae. Cauda slender, some- 

 what broader than the cornicles. Femora at the apices, tibiae on both ends, and 

 the tarsi, fuscous. 



