A LIST OF THE APHIDIDAE OF JAPAN, WITH DESCRIPTION 41 1 
grayish tinge, mesonotum in the middle browish ; antennae much shorter than 
the body, the 3rd joint subequal to the 4th and 5th taken together, with 
numerous roundish sensoria, wanting hairs, the 5th subequal to the post- 
rhinarial, anterhinarial somewhat shorter than the postrhinarial ; rostrum 
reaching to the 2nd coxae; wings hyaline, with a pale fulvous tinge, cubitus 
and veins fulvous, stigma grayish white, on the hind part being grayish, 2nd 
furcal nearly at the two thirds part of the first near the apex; cornicles 
short, in the middle broadly dilated, somewhat broader at the apices than at 
the bases; cauda somewhat shorter than the cornicles, at the base broader, at 
the apex rounded ; legs concolored with the body, tibiae at the apices and 
tarsi, infuscated. 
Length of body 1.7 mm.; exp. tegm. 6 mm.; antennae 1.2 mm.; cauda 
O.15 mm.; lower genital plate 0.2 mm. 
Apterous viviparous female — Body fusiform, brownish (in alcohol) ; an- 
tennae fulvous, at the apices infuscated, less than one half the length of the 
body, the 3rd joint wanting sensoria, anterhinarial as long as the postrhina- 
rial ; abdomen broadest in the middle ; cornicles longer than those of the 
winged viviparous female, in the middle dilated and curved outwardly ; cauda 
longer than broad, lower genital plate very long, conical ; legs pale fulvous. 
Length of body 2. mm. (including long lower genital plate); antennae 
0.9 mm.; cauda o. 1 mm.; lower genital plate 0.2 mm. 
Hab. — Shikoku (Iyo). 
F. P. — Salix babylonica. 
Norn. Jap. — Yanagi-oiiaga-almra. 
14. Yezaphis n. g. 
Allied Myzus Pass, from which it differs in the following characters: 
Antennae 5-jointed, the first 2 joints very broad, the following joints 
very slender distinctly shorter than the body, frontal tubercles short, the ist 
joint on the inner side gibbous, twice as broad as the 2nd, the 3rd double the 
length of the 4th, the 5th the longest; pronotal tubercles very small, corni- 
