HEMI[PTERA HETEROPTERA. 
t Second joint of the rostrum twice longer than 
the first. Femora carinate-nodulose. Fore 
femora especially clavate. - - 
tH Second joint of the rostrum a little longer than 
the first. Femora very slightly nodulose, 
not clavate. - - - = 
tt Post-ocular part of the head sometimes more 
than twice longer than the ante-ocular part, 
often shorter. Eyes more or less remote 
from the tip of the head. 
¢ Head oval, shorter by nearly the half than the 
prothorax. Prothorax flat ; Jhes ridged, 
not obtusely convex. 
tt Prothorax rarely flat; head in ‘that case hardly 
or but a little shorter than the prothorax. 
§ Hind lobe of the prothorax angularly extended 
hindward, covering the scutellum. - 
§§ Hind lobe of the prothorax not extended hind- 
ward, not covering the scutellum. 
x First joint of the rostrum longer than the second. 
Prothorax flat; fore lobe with a conical 
tubercle on each side at the base; disk 
unarmed. - - - 
xX Prothorax, NS fore lobe especially, more or less 
convex, this lobe with no conical tubercle on 
each side at the base. 
o Side angles of the hind lobe of the prothorax 
acute, prominent, or armed with a spine. 
+ First joint of the rostrum longer than the 
second, or the two almost equal in length. 
++ Post-scutellum angularly prominent behind the 
scutellum. 
First joint of the rostrum longer than the third 
and fourth. Scutellum unarmed. - - 
wow First joint almost as long as the third and 
fourth. Scutellum spiny. - - - 
++++ Post-scutellum not or hardly and never angu- 
larly prominent behind the scutellum, 
.» First joint of the rostrum a litle longer than 
the third and fourth together. 
+ Body oblong-ovate. Hind lobe of the prothorax 
with two compressed tubercles. Abdomen 
somewhat dilated, especially in the middle. 
+-+ Body elongate. Hind lobe of the prothorax 
unarmed or with two spines in the disk. 
Antenne and legs long, slender. Fore 
tibie almost as long as the femora. - 
coum First joint of the rostrum shorter than the 
third and fourth together, or equal to them 
in length. Hind lobe of the prothorax with 
four spines. 
57 
Peprivs. 
VESBIUS. 
PHONOCTONUS, 
PANnTHOvus. 
IsynpDus. 
DaLyRTa. 
ALCMENA. 
ASTINUS. 
ENnpbocuvs. 
