1915] Parshley — Systematic Papers on New England Hemiptera 93 



27. Front legs raptorial, the tibiae and usually the femora armed with rows of 



numerous closely set fine spines which interlock when the leg is flexed, 

 front femora more or less thickened (fig. 23), the femoral spines sometimes 

 replaced by closely set even setie; rostrum -i-segmented, the first segment 

 short (fig. 11); membrane with a few long cells from which radiate 

 numerous veins; sometimes brachypterous; tarsi 3-segmented; wandering 



predatory species of moderate size NABID.ffi 



Front legs not especially modified for grasping, generally much like the others, 

 front femora sometimes thickened and armed -with a few teeth; first seg- 

 ment of rostrum generally longer than wide 28 



28. Body and appendages extremely slender, linear; antennae geniculate, biclavate; 



eyes distant from base of head; ocelli present; rostrum -l-segmented; tarsi 

 3-segmented; inhabit underbrush; probably phytophagous; moderate in 



size .NEroiD^ 



Body and appendages not extremely slender, antennae otherwise con- 

 structed 29 



29. Membrane with five usually simple veins (fig. 6) ; antennae inserted low on the 



side of the head, usually below or on a line drawn from the middle of the eye 

 to the anterior end of the buccula (fig. 2-1); ocelli present; rostrum 4-seg- 

 mented; tarsi 3-segmented; sometimes brachypterous; phytophagous; 



moderate or small in size LYGAEID.E or MYODOCHID^ 



Membrane with numerous more or less anastomosing veins (fig. 7); antennae 

 inserted high, usually above such a line (figs. 25, 30) 30 



30. Metasternal orifices generally obsolete, when present placed between interme- 



diate and hind coxae near median line, with two diverging furrows running 

 outwards; ocelli present; rostrum 4-segmented; tarsi 3-segmented; phytopha- 

 gous; colors for the most part light; moderate or small in size . . .CORIZID.^ 

 Metasternal orifices distinct, placed farther outward; colors usually dark; 

 generally over 10 mm. in length 31 



31. Head much narrower and shorter than the pronotum (fig. 26); bucculae 



extending posterior to insertion of antennae (fig. 25); ocelli present; rostrum 

 4-segmented; tarsi 3-segmented; generally phytophagous; moderate or large 



in size COREID^ 



Head much larger proportionally, the part between the eyes wider than the 

 scutellum (fig. 27) ; bucculae anterior to insertion of antennae (fig. 30) ; ocelli 

 present; rostrum 4-segmented; tarsi 3-segmented; form rather elongated; 

 phytophagous (always.''); moderate in size ALYDID.^ 



32. Scutellum generally moderate- in size, more or less narrowed apically; scutellum 



rarely covering most of abdomen, in which case colors are bright and con- 

 trasting, or there is a prominent tooth just anterior to lateral angles of 

 pronotum; tibiae not strongly spinose but sometimes bear very small spines 

 or a more or less hairhke vestiture which may have a spinose appearance; 

 ocelli present; membrane with many veins (fig. 19); rostrum 4-segmented; 

 tarsi 3-segmented; phytophagous or predatory; moderate in size 



CIMICIDiE or PENTATOMID.® 

 Scutellum generally large, covering almost the whole of abdomen, usually very 



