398 ENTOMOLOGICAL NEWS. [Nov.,'l4 



15 (2). Third apical area of tegmina triangular, base petiolate, 



Sub-Family SMIUINAE. 



16 (27). Tegmina free; posterior process of prothorax narrow be- 



hind humeral angles. 



17 (26). Base of tegmina emitting two longitudinal veins; five api- 



cal areas, three discoidal areas. 



18 (19). Posterior process of prothorax 3-forked; apical areas of 



wings stylated Cyphonia clavlgera. 



19 (18). Posterior process of prothorax simple, not 3-forked; armed 



above each humeral angle with an acuminate horn ; front 

 elevated Genus Ceresa. 



20 (21). Humeral horns and apex of posterior prothoracic process 



ferruginous ; frequently a fuscous spot on costa near apex 

 of tegmina Ceresa urnguayensis. 



21 (20). Humeral horns concolorous, or apex and below fuscous. 



22 (25). Apex of humeral horns directed outward and backward. 



23 (24). Humeral horns strong; front of prothorax convex between 



humeral horns ; ocelli distinctly nearer to each other than 

 to the eyes Ceresa pauperata. 



24 (23). Humeral horns slender, very acute, a little recurved; front 



of prothorax distinctly convex between humeral horns; 

 ocelli nearly equi-distant from each other and eyes, 



Ceresa brunnicornis. 



25 (22). Apex of humeral horns directed distinctly outward, for- 



ward and upward, concave between Ceresa cavicornis. 



26 (17). Base of tegmina emitting three longitudinal veins, four api- 



cal and one discoidal areas in corium ; dorsum of pro- 

 thorax convex, posterior process acuminate ; size small, 



Acittalis variabilis. 



27 (16). Tegmina almost wholly covered by posterior prothoracic 



process, with two longitudinal veins, two or three discoidal 

 areas, interior basal area very broad, 



Phormophora arcchavelata. 



28 (i). Front tibise dilated, flattened, foliaceous, 



Sub-family MEMBRACINAE. 



2 9 (3)- Prothorax compresso-elevated, produced in front in a 



horn, gently decreasing in altitude backward, horn with a 

 lateral carina on each side in anterior superior part which 

 does not extend behind humeral angles, summit foliaceous ; 

 four small carinae on each side of median carina on un- 

 der surface of horn Enchophylhim imbelle. 



30 (29). Prothorax tricarinate, lateral carinae extended at least to 



lateral borders behind humeral angles ; front produced in 

 a high angle or horn Enchenopa monoceros. 



