HEM1PTERA HETEROPTERA. 53 



-*- Ocelli very often distinct. Antennae inserted in 

 the lips of the antenniferous tubercles. 

 Membrane large or of moderate size. 

 ++ Fore coxae almost cylindrical, short or very 

 short. Fore femora more than twice as long 

 as the fore coxa;. - - - - 7. Acanthaspidida. 



++++ Fore coxae long, flat or slightly concave on the 

 outer side. Fore femora about twice as long 

 as the fore coxae. . - - - 8. Piratida. 



-+-+ Ocelli none. Antenniferous tubercles extending 

 beyond the insertion of the antennae. Mem- 

 brane very large. - - - 9. Tribelocephalida. 

 ff- Third joint of the antennae inserted before the 

 tip of the secoud. Fore wings very broad, 



the membrane occupying the greatest part. 10. Holoptilida. 

 b. Second joint of the rostrum incrassated towards 

 the base and armed with two bristle-like 

 spines. No ocelli. Tarsi three-jointed. 



Claws simple. - - - - 11. Saicida. 



B. Ocelli most often none. Legs long, very 

 slender. Fore coxa? more or less elongated, 

 inserted in the apical part of the prostethium, 

 often extending beyond the tip of the head. 

 Fore tibiae shorter than the fore femora. 



a. Fore tarsi with two claws. 



* Two distinct ocelli. - - - - 12. Bactrodida. 



** No ocelli. - - - - - 13. Plceariida. 



b. Fore tarsi with one claw. No ocelli. - - 14. Emesida. 



The following is Dohrn's division of Nudirostra in Slett. Ent. Zeit. 

 xx. 1859,91. 



1. Harpactorida?, with Saccoderidae, Zelidae and Lophocephala. 



2. Steuopodidae. 



3. Reduvidae, with Conorhinus, Pelalocheirus, Holotrichius and Macro- 



pidae. 



4. Apiomeridae. 



5. Ectrichodidae, with Cimbus. 



6. Piratidee. 



Geuera of Stal's subfamilies of Reduvidae. 

 Subfam. 1. REDUVIIDA. 



Iuclndiug the Harpactorida; of Serville. 



Subdiv. 1. 



A. Fore sides of the mesothidium furnished with 

 a tubercle or fold. 



a. First joint of the rostrum extending to or behind 

 the eyes, equal to or longer than the inter- 

 ocular part of the head. 



