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Suborder II, HETEROPTERA. 

 TABLE OF DIVISIONS. 



Posterior coxre acetabulate, rotating, with no femoral grooves 



Div. I, TROCHALOPODA, Schiodte. 



*Claws terminal, , Subdiv. I, GEODROMICA, A-hmead. 



**CIaws superposed Subdiv. II, HYDRODROMICA, Asbmead. 



Posterior coxse hinged, provided with lemoral grooves 



Div. II, PAGIOPODA, Schiodte. 

 t Antenna? always plainly visible .. ..Subdiv. I, GYMNOCERATA, Ashmead. 



tt-"^'itennaa hidden under cavities of the head 



Subdiv. II, CRYPTOCERATA, Ashmead. 



Division I, TROCHALOPODA, Schiodte. 



Subdivision I, GEODROMICA, Ashmead. 



ANALYTICAL TABLE OF THE FAMILIES. 



Winged : or if wingless with ocelli and always with a jointed beak 2 



Wingless, ocelli wanting. 



Beak not jointed ; anterior tarsi 2-jointed Fam. XI, Pediculidas. 



Heak jointed. 

 *Antenn0e short, 4Jointed, last joint fusiform ; beak 4-jointed ; anterior tarsi 



3-jointed Fam. XII, Polyctenidas. 



**Antennre long, last joint long, setiform ; clypeus triangular 



Fam. XIII, Cimicidae. 



2 Beak reposing in a groove 3 



Beak not reposing in a groove. 



Elytra composed of a single piece, the membrane not being separated 



Fam. XIV, Ceratocampidas. 



Elytra composed of corium, cLivus, embolium, cuneus and membrane, seldom 



wanting ; clypeus elongated ; beak 3- or 4-jointed, tarsi 2- or 3-jointed ..... 



Fam. XV, Anthocoridae. 



3 Fore legs raptorial ; or then body surrounded with foliaceous plates 4 



Fore legs not raptorial ; tarsi 2-jointed. 



fElytra with reticulated nervures ; third antennal joint normal ; body very flat. . 



Fam. XVI, Aradidas. 



ft Elytra strongly areolated, frequently vitreous ; third antennal joint abnormally 



lengthened; thorax strongly vesiculose or carinate. .Fam. XVII, Tingitidae. 



4 Body often high, most frequently angulate ; elytra with remose nervures ; terminal 



antennal joint longest and thickest, fusiform Fam. XVIII, Phymatidae. 



Body very flat, surrounded by foliaceous plates or scales ; scutellum reaching 

 nearly to the top of the abdomen Fam. XIX, Phloeidae. 



Body most frequently elongated, elongate oval or linear ; scutellum small triangu- 

 lar or wanting ; while the antennee excepting in the family A'fpidte, are plainly 

 visible throughout their entire length 5 



Body usually rounded, oval, or oblong oval, convex or highly convex ; the scutel- 

 lum always large, frequently covering the entire abdomen ; while the basal 

 joint of the antennoe is more or less hidden by lateral projections of the head. 

 *Scutellum usually short, flat, triangular, seldom lengthened, sometimes with a 

 rounded tip. 

 Tibi^ strongly spined, or dilated Fam. XX, Cydnidae. 



**ScuteUam large, convex, quite or nearly covering the whole abdomen. 



