HEMIPTERA HETEROPTERA. 



31 



H Prothorax transversely trapeziform. 

 ** No hooks on the areolets. 

 | Prothorax in front with a short middle keel. . 

 | First joint of the rostrum as long as the head. - 

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

 ff Prothorax with no middle keel. 

 | Fore wings with no membrane. - 

 || Fore wings with a membraue. 

 § Apical veins of the wing-areolets not petiolated. 

 X Cheek segments small, liuear. 

 o Rostrum extending to the second ventral segment. 

 oo Rostrum not extending beyond the middle of the 

 mesopectus. - 

 XX Cheek segments half-round. - - - 



§§ Apical veins of the wing areolets petiolated. 

 X Cheek segments broad. - 

 X X Cheek segments not broad, almost semicircular. 

 o Petioles of the apical veins much shorter than the 

 forks. ------ 



oo Petioles of the apical veins as long as the forks. 

 -+ Tarsi stout. - 



H — »- Tarsi slender. ----- 



Plat? pl ax. 



Cymus. 

 Cymodema. 



Anomaloptera. 



OxYCARENUS. 



Brachyplax. 



Campxotelus. 



Macroplax. 



Metopoplax. 



MlCROPLAX. 



Macropterna. 



The genera Pbilomyrmex, 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 Lygceida? are arranged as follows: — 



A. Antenna; 4-jointed. 



a. Fore femora not twice longer than the hind 



femora. 

 * Membrane of the fore wings with transverse 



veins, 

 t Eyes not petiolated. 

 | Eyes not contracted behind. 

 § First joint of the rostrum not in a furrow. 

 X Fore femora not or hardly thicker thau the hind 

 femora. 

 o Membrane with one basal areolet. 

 -+■ First joint of the rostrum extending beyond the 

 base of the head. 

 First joint of the rostrum longer than the head. - 

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

 First joint of the rostrum not extending beyond 



the base of the head. 

 Fore femora unarmed. 



Antennx' longer than the body. - - - 



u?«^n Antenna: not longer than the body. 



-f- Third and fourth veins of the membrane united 



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



-j — |- Third and fourth veins of the membrane parallel 



to each other. - 7. Nysiub. 



++ 



+++* 





2. Ltcstjs. 



CCEXOCORIS. 



9. Malcus. 



