HEMIPTERA HETEROPTERA. 
43 
§§ Transverse border of the neck complete. 
X Cuneus short-triangular, curvilinear, little longer 
than the breadth of its base, 
o Head thick. - _ . . _ 
oo Head slender, elongated. 
-t* Kostrum extending to the bind border of the 
meta pectus. - - _ - . 
-f — t- Rostrum extending to the second or third ventral 
segment. - - - . - 
X X Cuneus rectilinear, almost twice as long as tlie 
breadth of its base. 
§§ Fore border of the prolhorax with a broad rim. 
X Callus of the front conspicuous, extending in a 
sharp angle of the front. 
o Head thicL - - . _ , . 
oo Head less thick, somewhat elongated. 
-h Rostrum extending to the second or to the third 
ventral segment. - _ - . 
Rostrum extending to the middle of the meta- 
pecius. 
X X Callus of the front passing with a curve into the 
vertex. 
o Third joint of the hind tarsi somewhat longer than 
the second. - . _ 
00 Ihird joint of the hind tarsi somewhat shorter 
than the second. - - - > 
ft Prothorax with no rim in front, 
t Areolets of the wings without hooks. 
§ Head transverse, 
X Callus of the front extending almost into a 
quadrant. - 
X X Callus of the front compressed, more or less pro- 
minent. 
o Cheeks elevated into ridges along the eyes. 
00 Cheeks not elevated into ridges along the eyes. 
-J- Head remarkably straightened behind the eyes. 
+H- Third joint of the hind tarsi longer than the 
second. - - _ - _ 
++++ Third joint of the hind tarsi shorter thad the 
second. - - _ - . 
H — i- Head not straightened behind the eyes. 
++ Prothorax bell-shaped. 
Head not thick, compressed between the eyes. 
Head thick. 
0 Prothorax short-bell-shaped. - - - 
OQ Prolhorax elongate-bell-shaped. 
++++ Prothorax transverse- or elongate-trapeziform. 
Second joint of the antennae cylindrical, or slightly 
clavale. 
O Rostrum extending to the hind border of the 
mesopeclus. 
= Second joint of the hind tarsi longer than ihe third. 
Charagiochilus. 
PoLYMERUS. 
Cyphodema. 
Tylonotus. 
Lyqus. 
PCECILOSCYTUS. 
Hadrodema. 
Orthops. 
Stiphrosoma. 
Halticcb. 
Cyllocoris. 
Globiceps. 
Mecomma. 
Cyrtorhixus. 
Aetorhinus. 
Pachylops. 
