190 Flemtptera-Heteroptera. 
very long and thin, clothed with fine hairs; pronotum very 
transverse, trapezoidal, its margins nearly straight; scu- 
tellum triangular, transverse; elytra long, extending far 
beyond the apex of the abdomen, largely rounded pos- 
teriorly ; membrane very large; legs simple, tarsi three- 
jointed. 
There are two Huropean species, of which we have only 
one in this country. 
C. alienum, H. S/:—Dull, pale greyish-brown, third 
joint of the antennz about twice as long as the first and 
second together, fourth about three-quarters as long as the 
third; pronotum at the base nearly twice as broad as long, 
and once and a half as broad as the anterior margin, sides 
and anterior margin nearly straight, base very slightly 
sinuate; elytra slightly shining, very thin, their lateral 
margins reflexed at the base ; membrane rather thinner, and 
more transparent than the rest of the elytra, but of much 
the same colour; tibiz with a few fine bristly hairs. 
L. 2 mm. 
On the edges of streams in summer; near Black Lakes, 
Kerry, Ireland, Haliday; Bettws-y-Coed; Ivybridge, 
South Devon, Wollaston; Banks of the Almond, near 
Edinburgh, Sharp; Bewdley, Ludlow, Church Stretton, 
Blatch; Barry Island, South Wales, Billups; Forres, 
Perth, Reuter. 
ANTHOCORINA. 
(4) 1. Third and fourth joints of the antennz 
very fine and thin, clothed with long 
erect hairs. 
(3) 2. Anterior femora hardly thicker than the 
intermediate pair . i : , - Lycrocorts. 
(2) 3. Anterior femora  incrassated, much 
3 
thicker than the intermediate pair . PrezostEruus, 
(1) 4. Third and fourth joints of the antenne 
scarcely or not thinner than the pre- 
ceding, hairs not long and erect. 
