41 o s - MATSUMURA 
Pupa — Differs from the winged viviparous female in the following 
points : — 
Antennae shorter, the 3rd joint without sensoria, anterhinarial nearly as 
long as the postrhinarial ; wing-sheath greenish; cornicles short, scarcely 
broader in the middle, towards the apices narrowed; cauda smaller. 
Length of body 1.5 mm.; antennae 0.6 mm.; cornicles 0.2 mm. 
Hab. — Honshu (Tamba). 
F. P. — Vigna sinensis, collected by Mr. Jiko Adaciii. 
Nom. Jap. — Sasage-tsiLbo-abura. 
13. Nipposiphum n. g. 
Winged viviparous female much allied to Siphocoryne Pass., but it differs 
much in the apterous viviparous female. 
Anterhinarial scarcely longer and somewhat narrower than the post- 
rhinarial ; rostrum longer, reaching to the 2nd coxae ; cornicles short, much 
dilated in the middle and curved outwardly; cauda small, much longer than 
broad ; lower genital plate of the apterous female very long, nearly twice as 
long as the cauda, conical, being much the broadest at the base; the rest of 
the characters nearly the same as in Sipliocorync. 
Genotype — Nipposiplmm salicicola Mats. 
It is quite peculiar that the lower genital plate of the apterous female of 
this genus is much longer than the cauda and is narrowly and conically pro- 
duced. Normally the lower genital plate of the typical Aphidinae is always 
broad and rounded, while in the subfamily Callipterinae the lower genital plate 
is either bilobed or truncated or rounded and not produced conically. Em- 
podial hairs of this genus are simple and not capitated as those of Calli- 
ptcrinac. As to the other characters, however, it much resembles Siphocoryne 
Koch., so I have placed this genus temporarily in the subfamily Aphidinae. 
54. Nipposiphum salicicola n. sp. (PI. XVI, f. 4, a, b, c.) 
Winged viviparous female — Body oblong, fulvous (in alcohol), with a 
