BRANCH : BIOLOGY OF KANSAS MEMBRACID^. 99 



4. Elytra externally broadly coriaceous and opaque, with the veins of 

 the coriaceous portion scarcely distinguishable, and the free 



margin broad Tragopin^ Stal. 



Elytra entirely membranous, with the veins distinct or coriaceous 

 and punctured at the base only / — Smiliin^ Stal. 



I.— Subfamily SMILIIN^* Stal. 

 The Smiliida are more northern in their contribution and form by far 

 the greater portion of our North American fauna in this family. 



Elytra free, with the clavus uncovered, its interior margin touching the 



external margin of the pronotum 1 — Cerasini Godg. 



Clavus and frequently a part of the corium covered by the pronotum . . 1 



1. Wings with the terminal areole sessile, its base truncated. 



2 — ^Telamonini Godg. 

 Wings with the terminal areole triangular, stylate 2 



2. Base of the corium with two closely contiguous veins. 



S — POLYGLYPTINI Godg. 



Base of the corium with three veins, usually contiguous. 



Jf — Smiliini Godg. 

 1. — Tribe Cerasini. 

 Corium with two veins contiguous at base, sometimes united in one. ... 1 

 Corium with two distinct veins at base, contiguous at most, but for a 



short space at base, where they are subobsolete 2 



1. Pronotum armed with suprahumeral horns, sometimes reduced to 



mere tubular angles 1 — Ceresa A. & S. 



Pronotum without suprahumeral horns, the sides of the metopidium, 

 at most, obtusely angled 2 — Stictocephala Stal. 



2. Elytra with five apical areoles, veins distinct. . . .3 — Acutalis Fairm. 

 Elytra with four apical areoles, veins indistinct. 



4 — Micrutalis Fowler. 

 1. — Genus Ceresa A. & S. 

 In North America we find fifteen species, of which only three are 

 recorded from Kansas. I give below a small key, based somewhat on that 

 of Van Duzee (4) : 



A. Suprahumer.ils broad, stout and triangular. 



B. Elytra infuscated, metopidium pale, prothorax brown, transversely banded 

 with pale near middle and a narrower pale marking near posterior 



process 2 — dieeros Say 



AA. Supraluimcrals acute, distinctly produced as horns, triangular, sometimes short. 

 Elytra very transparent. -Species green when alive, turning to tawny or green 

 mottled with tawny when dried. Prothorax covered with small white dots. 



B. Metopidium slightly curved cephalad between the Buprahumerals ; produced 

 at times into an obtuse angle; sometimes flat but never concave. 



C. Clypeus short at apex, continuing contour of cheeks, 1 — bubalus Fabr, 

 BB. Metopidium concave between the suprahumerals, sometimes flat or u trifle 

 convex in the very middle. Suprahumerals (viewed from above) subterete, 

 sloping upward and curving slightly backward. 



C. Clypeus produced at apex, forming an angle in contour of cheeks. 



3 — tauriana Fitch 



* To accord with the general custom of term endings in subfamily names, I have 

 changed the ending from ID.\ to IN.E. 



