A LIST OF THE APHID1DAE OF JAPAN, WITH DESCRIPTION 367 
cauda broadly conical, short, the lower genital plate scarcely incised at the 
hind margin, with long, curved hairs ; legs moderately long, the anterior 
femora much enlarged, near the apex beneath with a tooth-like projection ; 
empodial hairs spatulate and much shorter than the claws. 
Genotype — Yamatocallis hirayamae Mats. 
2. Yamatocallis hirayamae n. sp. 
Winged viviparous female — Body oblong, yellowish brown ; antennae 
yellowish brown, 1 \ the length of the body, the 3rd joint with about 15-18 
rod-like sensoria at the basal one third, the 4th, 5th and 6th subequal, ante- 
rhinarial I \ the length of the postrhinarial ; compound eyes brown; rostrum 
robust, at the apex fuscous; fore wings hyaline, with a slight fulvous tinge, 
with a long brownish stripe, running from the base of the 2nd oblique to the 
tip of the wing, and being forked at the tip, stigma brownish, veins fulvous, 
the 2nd furcal arising from the middle of the first; hind wings at the part of 
the booklets with a brownish spot; cornicles curved, from the middle down 
to the base much enlarged, mouth part strongly constricted; cauda broadly 
conical, with sonic curved bristly hairs; legs concolored, tibiae at the apices 
and tarsi, somewhat infuscated. 
Length of body 2.6-3.5111111.; exp. f.egm. 9-15 mm.; antennae 3.5-5 
nun.; cornicles 0.5 mm. 
Hab. — Hokkaido (Sapporo), Honshu (Tokyo), Kiushu (Satsuma). 
F. P. — Abies sackalinensis, and unknown hosts. 
Nom. Jap. — Hirayama-abura. 
Two specimens were sent by Mr. S. Hikayama, one specimen was collect- 
ed by the author at Sapporo on Abies sackalinensis, and 2 more were captured 
from an unknown plant by the same author at Satsuma. 
3. Acanthocallis n. g. 
Closely allied to Myzocallis Pass. 
Antennae without distinct hairs, much shorter than the body, the 3rd 
join* on the outerside with 4 sensoria in a single row, anterhinarial longer 
