142 Flemiptera-Heteroptera. 
Forest, Blatch ; Caterham, Chatham, Champion; Chobham, 
Oxshott, Weybridge, and Mickleham, Billups. 
HEBRIDZ. 
The position of this little family has always been a matter 
of some doubt, but its relation to the Hydrometride seems 
to me to be the closest ; and as Dr. Paton in his Catalogue 
places it in front of that family, [ have adopted the position 
he assigns to it. In habits the family may be called sub- 
aquatic, as its members arefound amongst Lemna, in marshes, 
and in Spaghnum, ete., and are clothed beneath with the 
fine silvery, silky pubescence observable on the undersides of 
Gerris, etc., which appears to be impervious to water. In 
form short. Head with the face declivous; eyes large, 
round, with very large facets ; ocelli small, situated between 
them; face wide; the antenniferous tubercles situated far 
in front of the eyes, and rather low down on the side of the 
head, largely developed, rounded ; antenne five-jointed ; the 
sixth joint, mentioned by Messrs. Douglas and Scott, appears 
to me to be only the extreme, narrow, base of the third ; 
rostrum four-jointed, received into a canal under the head 
and thorax; pronotum trapezoidal; scutellum triangular ; 
elytra with the clavus submembranous ; membrane without 
nerves; cox widely separated, especially the posterior 
pair; tarsi two-jointed, claws at the apex of the tarsi; 
two genital segments visible in the ¢, three in the ?. 
HEBRUS, Curt. 
As there is only one genus in the family the characters 
given above will be sufficient to identify it. 
1. Basal joint of antenne projecting for half its length 
beyond the apex of the head. . PUSILLUS. 
. Basal joint of antenni egy projecting beyond 
the apex of the head . : - RUFICEPS. 
H. pusillus, /all.—Short, blackish brown, Head rather 
remotely punctured, with a whitish tinge along the inner 
