British Hemiptera-Heteroptera. 257 
E*, Short and stout, not covered with yellow or 
white scale-like pubescence. 
a. Antennze very long and thin, nearly twice as 
long asthe body .. sister “et .. Halticus. 
b. Antenne not long and thin .. a5 .. Stiphrosoma. 
E*E*, More or less elongate, black, covered with 
short yellow or whitish scale-like hairs .. Heterocordylus. 
EE. Head not covering the front margin of the 
thorax, nor produced posteriorly. 
F. Second joint of antennz not much dilated and 
flattened, 
G. Insect covered with short deciduous golden or 
whitish hairs . ° ac - Orthocephalus. 
GG. Insect not Eerie with short dacauate melden 
or whitish hairs. 
a, Second joint of antennz very long, 
once and a half as long as the third 
and fourth together .. a6 .. Loxops. 
b, Second joint of antennze not nearly so 
long as the third and fourth together Orthotylus. 
FF, Second joint of antennz much dilated and 
flattened ee a6 an 5e .. Heterotoma. 
DD. Wing cells with a hook-like nerve. 
E. Body dull and opaque. 
F. Tibiz spotted with black ae ee e. Anotherops. 
FF. Tibiz not spotted 
G. Species more or less densely hairy; hairs 
chiefly black. 
H. Eyes not very small, distance between the eyes 
not so wide as twice the width of the eye, 
lateral margin of thorax not sharp. 
a. Antenne subrobust throughout -- Hoplomachus. 
b. Antenne very thin at the apex -- Macrocoleus, 
HU. Eyes very small, vertex much wider than 
GG. 
twice the width of the eye, side margins of 
the thorax more or less sharp oe -- Amblytylus. 
Species without black hairs, pubescence very 
fine and regular. 
a. Head across the eyes not nearly so wide 
as the base of the thorax .. - Oncotylus. 
b. Head across the eyes as wide or ne ani 
as wide as the base of the thorax .. Conostethus. 
. Body more or less shining. 
. Second joint of antenne shorter than third.. Harpocera. 
. Second joint of antennz longer than third. 
Elongate, depressed, elytra parallel-sided, 
tibize with pale spines x 46 . Phylus. 
. Not elongate, depressed and paratietarasal 
tibiz with black spines. 
. Elytra covered with a short, deciduons, scale- 
like, pale pubescence. 
a. Second joint of antennz much incras- 
sated.. . - .. Atractotomus. 
b. Second joint of antennx not thickened Psallus. 
