—25— 



convenience, which by good aiuhorilies, and very properly I think, are 

 given the rank of super-families. These groups will be discussed more 

 particularly along with the characters of sub family and generic import- 

 ance in the synoptical tables of genera, which it is intended shall follow 

 this paper. 



SYXOPSIS OF SUB ORDERS. 



A. — Labium lorming a bsak and enclosing sets. 



Ji - -Labium jointed, spiracles inferior, wings usually present. 



C. — Head horizontal, b:ak arising anteriorly, fore wings, coriaceous at base.... 



Heteroptera 

 C'C — Head vertical, b^'ak arising pistero-iiiferiorly. Wings uniformly memhran 



ous or coriaceous Homoptera 



HB. — Labium not jointed, spiracles superior. Wings always absent Parasita 



A A. — Labuim not forming a beak, mouth parts free. 



B. — Wings present, narrow, delicately fringed; tarsi vesicular (frequenting 



blossoms) Thysanoptera. 



BB. — Wings never present; tarsi with claws. (Parasites on birds and mammals) 



Mallophaga. 



SYNOPSIS OF FAMILIES. 



HETEROPTERA. 



* .VNTEN'NAE .ALWAYS PROMINENT. 

 t Leys onllnari/, dclapted to terrestrial life. Xever iahahitbuj water or wet places. 



A. — Head usually flattened or triangular, closely joined to body, often immersed to 

 the eyes, basal joint of the rostrum straight. 

 B. — Bodies usually rather thick and flattened or convex above, convex below. 

 (X — (Ocelli usually conspicuous. • 



D. — Scutellum very large. 



E. — Scutellum quite convex, covering nearly the whole abdomen 



Scutelleridae. 



EE. — Scutellum nearly flat, attenuated posteriorly Penlatomidae. 



DD. — Scutellum ordinary. 



F. — Antennai inserted above a line drawn from eyes to base of beak .... 



Coreidae. 

 FF. — Anlennte inserted on or below lateral margin of head and on a line 



drawn from eyes to base of beak Lygaeidae. 



<JC. — Ocelli absent or inconspicuous. Bodies rather soft. 



(r. -Terminal joint of antenns not blender Pyrrhocoridae. 



(tG. — " " " " long and slender Phytocor'dae. 



BB. — Bodies decidedly flattened or else decidedly concave above, beak 3-jointed. 



H, — Antennae tapering. Body very flat Cimicidae. 



HH. — Antennne enlarging at tip or clulibed. 



/. —Wings more than covering abdomen, gauze like 



Tingitidae. 



