HEMIPTERA HETEROPTERA. 
25 
Fam. 1. LYG.EIM, C. H. 531. 
Lygeides and Rhyparoehromides, Serville — Lyga?ina, Lygaeidae, Rhypa- 
rochromidae, Phygadicidae, Henestaridae, and Cyraidae, Douglas and 
Scott. 
Prof. Stal has divided this family iuto ten subfamilies: — 
A. Abdominal segments nearly equally long. 
a. Fore acetabula remote from the hind border 
of the prostethium. - 
b. Fore acetabula ou the hind border of the 
prostethium. 
* All the ventral incisures extending to the 
sides. 
f Fore wings not wholly dilated, nor broader 
than the abdomen. 
+ Hook emitted by the subtensor vein. 
§ Prosternum and mesoslernum with no distinct 
furrow. 
X Fore femora not or hardly thicker than the 
hind femora, unarmed, or thinly spinulose. 
o Membrane furnished with an areolet in the 
interior basal angle. 
-4- Areolet of the membrane emitting two veins. 
-i — h Areolet of the membrane emitting one longi- 
tudinal vein. - 
oo Membrane with no basal areolet. 
X X Fore femora much thicker than the hind 
femora, with many spines beneath. - 5. Pachygronthida. 
§§ Prosternum and mesosternum with a distinct 
furrow. ----- 6. Cryptorhamphida. 
JJ: Hook emitted by the connecting vein. - 7. Phygadicida. 
ff Fore wings wholly dilated and broader than 
the abdomen. - 8. Cymida. 
** Third ventral incisure not extending to the 
sides, near which it is recurved. - - 9. Rhyparochromida. 
B. Abdomen contracted at the base ; second and 
third segments very long. - - 10. Colobathristida. 
The same author has divided these subfamilies into genera, as follows:—- 
1. Blissida. 
A. Body slightly depressed. Fore legs much incras- 
sated; tibiae with many spines, much shorter 
than the femora. - 
B. Body considerably depressed. Fore femora and 
fore tibiae nearly equally long, the latter 
neither incrassated nor spinose. 
a. Middle legs very remote from each other. Hind 
femora much incrassated and compressed. 
Chelochirus. 
Bochrus. 
1. Blissida. 
2. Lyg^ida. 
3. Malcida. 
4. Geocorida. 
