HEMIPTERA HETEROPTERA. 



31 



Cymus. 



Cy MO DEM A. 



Anomaloptera. 



oxycarenus. 



Brachyplax. 

 Campxoxelus. 



AIacroplax. 



Metopoplax. 



MiCROPLAX. 



Macropterna. 



JJ Prothorax transversely trapeziform. - - Plattplax. 



** No hooks on the aieolets. 

 •f Prothorax in front with a sliovt middle keel. 

 J First joint of the rostrum as lon<^ as the head. 

 H First joint of the rostrum shorter than the head.- 

 ft Prothorax wilh no middle keel. 

 X Fore wings wilh no memhrane. - - - 



Jf Fore wings with a memhrane. 

 § Apical veins of the wing-areolets not petiolated. 

 X Cheek segments small, linear, 

 o Rostrum extending to the second ventral segment 

 00 Rostrum not extending beyouil the middle of the 

 mesopectus. - - - - - 



XX Cheek segments half-round. - - - 



§§ Apical veins of the wing areolets petiolated. 

 X cheek segments broad. . - - - 



X X Cheek cegments not broad, almost semicircular, 

 o Petioles of the apical reins much shorter than the 

 forks. .----- 

 GO Petioles of the apical reins as long as the forks. 

 —i- Tarsi stout. . - - - - 



-)--+- Tarsi slender. - . - - . 



The genera Philomyrmex, of Sahlberg, and Aphanosoma, of Costa, 

 are not indicated by Fieber in his Synopsis, from want of definite informa- 

 tion respecting them, and for the same reason they are omitted here. 



In this Catalogue the genera of Lygsidce are arranged as follows: — 



A. Antennas 4-jointed. 



a. Fore femora not twice longer than the hind 



femora. 

 * Membrane of the fore wings with transverse 



veins. 

 t Eyes not petiolated. 

 J Eyes not contracted behind. 

 § First joint of the rostrum not in a furrow. 

 X Fore femora not or hardly thicker than the hind 

 femora. 

 Membrane with one l)asal areolet. 

 -)- First joint of the rostium extending beyond the 

 base of the head. 

 First joint of tlie rostrum longer than the head. - 2. Lyg^us. 



First joint of the rostrum as long as the head. - 3. Ccenocoris. 

 First joint of the rostrum not extending beyond 



the base of the head. 

 Fore femora unarmed. 



Antenna longer than the body. - - - 9. Malcus. 



MP1U71 Antennffi not longer than the body. 



-f Third and fourth veins of the membrane united 



near the base. ... - 4. Arocatus. 



4— {- Third and fourth veins of the membrane parallel 



to each other. ... - 7. Nysius. 



4-+ 





