44 
OATALOaUK OF 
Second joint of the hind tarsi shorter than the 
second. ... - - 
OO Rostrum extending to the hind border of the 
metapeclus, or beyond it. 
= Vertex not dilated. - 
: Vertex dilated. 
V Callus of the front stout, curved and prominent. - 
VV Callus of the front vertical, equally broad. 
== Head above transverse. - - - - 
===: Head above with nearly equal sides. 
tcnicn Second joint of the antennae very clavate or 
thickly cylindrical in the male, thick clavate- 
spindle-shaped or compressed in the female. 
O Rostrum extending to the second ventral segment. 
OO Rostrum extending to the hind border of the 
metapeclus. - - - - Heterocordylob . 
§§ Head elongated. 
X Second joint of the hind tarsi longer than the 
others, _ - _ - - Orthocephalus. 
XX Third joint of the hind tarsi longer than the 
others. ----- Labops. 
JJ; Areolets of the wings with hooks, 
§ Second joint of the antennae spindle-shaped. - Atraototomus. 
§§ Second joint of the antennae clavate. 
X Callus of the front proceeding from an almost 
Camptotylds. 
Loxops. 
Litocoris. 
Xenocoris. 
Orthotvlos. 
Heterotoma. 
right angle, 
o Xyphus swollen. 
-¥ Second joint of the antennae shorter than the 
third. - - - - - - Harpocera. 
Second joint of the antennae longer than the 
third. ----- Megalodactylus. 
OO Xyphus deepened. 
-H Eyes elongated or oval. 
-*-1- Rostrum extending to the hind border of the 
metapeclus. ----- 
Rostrum extending to the third or fourth ventral 
segment. - - - - - 
-i — H Eyes round. - - - - - 
X X Callus of the front proceeding from a more or less 
acute angle or from a curve, 
o Xyphus swollen. 
Callus of the front proceeding from a more or less 
acute angle. 
++ Face oblique. - - - - - 
++++ Face vertical. 
Face bent in the fore part. - - - 
Face straight in the fore part. 
O Prothorax trapeziform. 
= Throat conspicuous. 
V First joint of the rostrum as long as the under 
side of the head. - - - - Brachyorthrum. 
VV First joint of the rostrum extending to the middle 
of the xyphus. 
Oncotylub. 
CONOSTKTHUB. 
Anoterops. 
Tinicephalus. 
Traqiscus. 
