192 Annals Entomological Society of America [Vol. VIII, 
Vertex nearly flat, one and one-half times longer than width between 
eyes, three-fifths as. long at eye as on the middle, as long as pronotum, 
margin thick, frontal sutures convex, clypeal suture obsolete, clypeus 
parallel margined, pronotum twice as wide as long, venation of elytra 
much as in inimicus, claval veins united by a cross vein near the middle 
of the inner claval vein, outer vein united to claval suture by a few 
supernumerary veins near the apex, second cross nervure present, central 
anteapical cell constricted and divided by a cross vein, outer anteapical 
cell rectangular at apex, elytra longer than abdomen, appendix broad, 
more nearly truncate at apex than in inimicus. 
Color: Vertex white, four marginal dots and two smaller ones next 
the eye black, the apical pair triangular, a large irregular spot on the 
disc narrowly connected with the black dots next the eye and a pair of 
convergent dashes near the base, fuscous brown, ocelli white; prono- 
tum fuscous, the anterior margin and three longitudinal stripes pale, 
anterior margin with a dark fuscous spot behind each eye, and a paler 
fuscous area on the middle; elytral venation white, margined with 
fuscous, basal third of clavus white, an elliptical fuscous area at each 
angle, an oblong area next the claval suture, a spot on the costa, and 
the third apical cell, black, all these black markings being the accentu- 
ated portions of a common cruciate fuscous apica! figure and a fuscous 
more basal saddle. 
Q Ultimate ventral segment three times as long as penultimate, 
nearly twice as broad as long, roundingly narrowed posteriorly, the 
lateral angles produced, lobate, the posterior margin obliquely excavated 
one-fourth to base of segment, with the apex of excavation convexly sub- 
truncate, and one-third the width of the segment. 
o& Valve rounded posteriorly, twice longer than ultimate segment, 
nearly three times as broad as long, convex anteriorly; plates four 
times as long as valve, more than one-half longer than broad, concavely 
narrowing to the attenuate tips which equal the pygofers. Pygofers 
very densely clothed with bristles. 
Described from ten females and eight males taken on 
Arundinaria tecta, July and August, 1914, by the author at 
Clarksville, Tennessee. 
Deltocephalus vinnulus n. sp. (Pl. XIX, figs. 1, 2). 
Related to compactus with very similar genitalia in both sexes, but 
much paler. 2. to 2.6 mm. long, 1. mm. broad. 
Vertex convex, slightly longer than width between eyes, nearly 
one-half longer on middle than next eye, margin thick, tip blunt, as long 
as pronotum, clypeus parallel margined, suture obsolete, pronotum twice 
as wide as long, elytra hyaline obliquely subtruncate at tip, venation 
pale, claval veins separate, a few supernumerary cross veins along the 
sutural margin, central anteapical cell divided by a cross vein, outer 
anteapical cell rectangular at apex. 
Color: Vertex, including ocelli, white, the anterior half black, oak 
ing a white, squat, T-shaped figure, the base of which is formed by a 
