IOWA ACADEMY OF SCIENCES. 
207 
have similar spurs, but the tibi^ are in that case angulate and 
the antennae are below instead of between the eyes. All of 
the N. A. representatives fall in the first two subfamilies of 
Stal, which may be separated as follows: 
SYNOPSIS OF THE SUBFAMILIES. 
A. Anterior margin of the pronotum straight; head narrower than 
pronotum; ocelli placed close together; eyes small, rounded: 
elytra broad, irregularly rounded at apex. Cercopince Stdl. 
AA. Anterior margin of prouotum angulate or rounded; ocelli farther 
apart, eyes oblong or angulate; head equalling, or almost 
equalling, the pronotum in width; elytra compressed behind, 
rarely reticulate Aphrophorince St^l. 
SUBFAMILY CERCOPIN^. 
This subfamily includes large, showy forms in black, red 
and yellow and is well represented in the tropics. The N. A. 
forms all belong to a single genus and only a single species 
occurs north of the Mexican border, and it is more abundant 
farther south. 
GENUS TOMASPIS A. & S. 
Tomaspis A. & S. His. des Hemip. p. 561, 1843 
Triecphora A. & S. His. des. Hemip. p. 561, 1843. 
Monecphora A. & S. His. des. Hemip. p. 562, 1843. 
Sphenorhina A. & S. His. des. Hemip. p. 562, 1843. 
Head small, much narrower than the humeral angles of the pronotum; 
front strongly inflated, anteriorly produced, usually beyond the vertex to 
which it rounds back, transversely ribbed and usually medially carinate; 
rostrum short, two jointed, scarcely reaching the middle coxae; vertex 
much shorter than the pronotum, obtusely angulate, tylus large, eyes 
small, nearly rouud; ocelli twice farther from eyes than from each other; 
pronotum large, anterior margin straight, lateral margins long and 
strongly oblique, posterior margin straight or emarginate; elytra coriace- 
ous, somewhat flaring, wider than the pronotum, apex rounding equally 
from both sides, venation obscure, apically reticulate; wings with the 
intramarginal vein entire, third longitudinal vein forked. 
TOMASPIS BICINCTA Say. 
Cercopis hicincta Say. Jour. Acad. Nat. Sci. Phil. VI, 303, 1831. 
Cercopis ignipecta Harr. (MSS.) Cat. Ins. Mass. 1833. 
Monecphora bifascia Walk. List Horn. B. M. p. 679, 1851. 
Monecphora angusta Walk. List Horn. B. M. p. 680, 1851. 
Monecphora neglecta Walk. List Horn. B. M. p. 683, 1851. 
Monecphora ignipecta Fitch. (Descrip.) 3d Rep. Ins. N. Y. p. 71, 1856. 
Monecphora inferans Walk. List Horn. B. M. Sup. p. 176, 1858. 
Sphenorhina simulans Walk. List Horn. B. M. Sup. p. 183, 1858. 
Tomaspis fasciaticollis Stal. Stett. Ent. Zeit. XXV, p. 63, 1864. 
Tomaspis rubra Fowler. Biol. Cent. Amer., p. 183 (in part). 
Tomaspis simulans Fowler. Biol. Cent. Amer. p. 185 
