HEMIPTERA HETEROPTERA. 
7 
Fam. 2. ARADJFME. 
Aradidae, Serv. Hist. Hem. 307. 
A. Second joint of the antennae longer than all the 
others together. - 
B. Second joint of the antennae not longer than the 
third. 
a. Scutellum not very large. 
* Body not linear. - 
** Body linear. 3. 
b. Scutellum very large. - 
The Brachyrhynchidae and Aradidae are united in 
thus distributed in genera by Prof. Stal : — 
A. Rostrum extending beyond the base of the head. 
B. Rostrum not extending beyond the base of the 
head. 
a. Scutellum large, extending far beyond the 
middle of the abdomen. - 
b. Scutellum of moderate size. 
* Membrane veined. 
f First joint of the antennae longer than the 
second. 
| First joint of the antennae very long, with long 
and thick-set bristles. - 
Ij; First joint of the antennae without long or thick- 
set hairs. 
§ Head with a spine on each side extending 
beyond the eyes. - 
§§ Head with no spine extending beyond the 
eyes. 
X Head extending much in front of the antenni- 
ferous tubercles. 
o Segments of the abdomen lobate. 
oo Segments of the abdomen not lobate. 
-t~ First joint of the antennae shorter than the head. 
Scutellum not tuberculate. 
+•+ Sides of the prolhorax bent, lobate in front of 
the band. 
c<^ Head with a tooth behind the eye. Hind border 
of the prothorax bent. - 
Head with no tooth behind the eye. Hind 
border of the prothorax straight. - 
++++ Sides of the prothorax slightly bent, not lobate 
in front of the bend. - 
- 4 — y- First joint of the antennae as long as the head. 
Scutellum with a tubercle. 
1. Aradus. 
2. PlESTOSOMA. 
M ELANOSTESPH U S . 
4. Aradacaxthia. 
one family, and are 
1. Aradus. 
2. Calisius. 
3. Alyattes. 
4. Arictus. 
o. Dysooius. 
6. ClNYPHUS. 
7. Artabanus. 
8. Hesus. 
9. Crimia. 
