Corixide. 335 
Common, often with the preceding, generally dis- 
tributed. 
C. Linnei, Fiebh—Dark brown-black; frontal im- 
pression of ¢ scarcely indicated; entire surface of pronotum 
and elytra, except the membrane, very rastrate ; pronotum 
with 5-6 lines, and the margins pale; elytra with the 
markings of the clavus and corium very narrow, wavy and 
almost entire, continued to the apex; lees pale, pal of 
3 concave in front, widened and blunt at the apex. 
L. 7-8 mm. 
Common and generally distributed. 
C. Sahlbergi, Mieb—Very like Linnxi; frontal im- 
pression of the male distinctly marked and abruptly ter- 
minated on its superior margin; pronotum more elongate 
with from 7-9 transverse pale lines; apex of the corium 
pale, the transverse lines there becoming obliterated ; 
anterior pale of the ¢ much as in Linnxi, intermediate 
claws shorter than the tarsi. 
L. 7-8 mm. 
Common and generally distributed. 
C. striata, Fieb—Rather an elongate species, easily 
known by the six pale lines of the pronotum, whose angles 
are obtuse, by the basa] pale lines of the clavus being much 
dilated inwardly, and by the discal markings of the corium 
being separated by a broad dark line, both from the claval 
and lateral margin; intermediate claws shorter than the 
tarsi; facial impression of the 3 very slight, abruptly and 
truncately terminated superiorly ; pale shortly cultrate. 
L. 64-7 mm. 
Very common and generally distributed. 
C. distincta, Fieb. (Dowglasi, Fieb.).—Easily known 
from the above by the 7-8 pale lines of the pronotum, the 
narrower, scarcely, if at all, dilated lines of the clavus, the 
longer intermediate claws, which are as long as or longer 
than the tarsi, and the finer transverse lines of the corium, 
which has usually a dark line towards the apex of the 
