—2 5 — 



convenience, which by good authorities, 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. 



SYNOPSIS OF SUB- ORDERS. 



A. — Labium forming a beak and enclosing setae. 



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



C. — Head horizontal, beak arising anteriorly, fore wings, coriaceous at base 



Heteroptera 

 CC. -Head vertical, beak arising postero-inferiorly. Wings uniformly membran 



ous or coriaceous Homoptera 



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



.•4.4. — Labium not forming a beak, mouth parts free. 



g. — 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. 



* ANTENNAE ALWAYS PROMINENT. 



t Legs ordinary, adapted to terrestrial life. Never Inhabiting water or wet places. 



.4.— 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. 

 C. — 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— Antennae inserted above a line drawn from eyes to base of beak .... 



Coreidae. 

 FF. -Antennae inserted on or below lateral margin of head and on a line 



drawn from eyes to base of beak Lygaeidae. 



CO.— Ocelli absent or inconspicuous. Bodies rather soft. 



G. -Terminal joint of antenna: not slender Pyrrhocoridae. 



(iO.— " " " " long and slender Phytocondae. 



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



//, —Antennae tapering. Body very flat Cimicidae. 



JUL— Antennae enlarging at tip or clubbed. 



/. —Wings more than covering abdomen, gauze like 



Tingitidae. 



