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Suborder II, HETEROPTERA. 

 TABLE OF DIVISIONS. 



Posterior coxct acetabiilate, rotating, with no femoral grooves 



Div. I, TROCHALOPODA, Schiodte, 



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



**Claws superposed Subdiv. II, HYDRODROMICA, Ashmead. 



Posterior coxk hinged, provided with temoral grooves 



Div. II, PAGIOPODA, Schiodte. 

 fAntenntis always plainly visible .. .. Subdiv. I, GYMNOCERATA, Ashmead. 



ttAntennit 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, Pediculidae. 



Beak jointed. 

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



3-jointed Fam. XII, Polyctenidae. 



** Antenna; 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, Ceratocampidae. 

 Elytra composed of coritim, clavus, embolium, cuneus and membrane, seldom 



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



Fam. XV, Anthocoridae. 



3 ?ore 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, Aradidae. 



tfElytra strongly areolated, frequently vitreous ; third antennal joint abnormally 



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



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



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



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 antennre excepting in the family Ncpidci:., 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 antennae is more or less hidden by lateral projections of the head. 

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

 rounded tip. 

 TibiiE strongly spined, or dilated Fam. XX, Cydnid^. 



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



