32 STUDIES IN NORTH AMERICAN MEKlIk Al II) .h 



Subfamily Smiliida Stal. 



The Smiliida are more northern in their distribution and 

 form by far the greater part of our North American Membracid 

 fauna. I prefer to follow Dr. Goding in dividing them into 

 tribes and give here a table for distinguishing these. 



Elytra free with the clavus uncovered, its interior margin 

 touching the external margin of the pronotum, 



i, Cerasini Godg. 

 Clavus and frequently a part of the corium covered by the 

 pronotum, i. 



i. 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, 



3, Polyglyptini Godg. 



-. Base of the corium with three veins, usually contiguous, 



4, Smiliini Godg. 



Tribe Cerasini Goding. 



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 re- 



duced to mere tubercular 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. 



Genus Ceresa A. <& S. 



In this large genus our species are numerous and closely 

 related and show considerable variability in the form of the 

 suprahumeral s making it a difficult genus to study. I give 



