186 The Ohio Journal of Science [Vol. XVI, No. 5, 



Tribe Deltocephalini. 



Genus Deltocephalus Bumi. 



Body oblong or oval, elongate; head with the eyes as wide 

 as the pronotum, pointed in front; ocelli on margin between 

 vertex and front. Vertex flat or slightly convex at the lateral 

 margins, more or less angularly produced in front. Inner 

 sector of elytra forked twice, three anteapical cells present. 

 In the Brachypterous forms there is a decided reduction in the 

 number of veins. 



Deltocephalus breviatus sp. n. (PI. VI, Fig. 2). 



General color yellowish green, Brachypterous form. Length 



2.75 mm. Breadth scarcely 1 mm. 



Male — Vertex yellow, with a median line extending from the 

 posterior margin to a little beyond the middle ; length a little more than 

 twice the width between the eyes; anterior margin sharply pointed, 

 acutely rounded; eyes greenish white, large, prominent, extending 

 backward beyond the anterior edge of the pronotum. Ocelli small, 

 colorless, located near the eyes. Face yellow, the frons traversed by 

 six to eight brown arcs; length of entire face about equal to the width 

 across the eyes; frons more than twice as long as its width next clypeus, 

 and more than twice as long as the clypeus, which is one and one-half 

 times as long as it is broad and is parallel margined. Loras prominent, 

 cheeks broad and strong. Pronotum greenish-yellow above, black 

 beneath; broad, not as long as the vertex, the anterior margin rounded 

 between the eyes. Scutellum small, yellowish green, half as long as the 

 pronotum. Elytra yellowish, transparent, short, extending to the 

 penultimate dorsal segment of the abdomen; venation rather indistinct, 

 apices of elytra broadly rounded. Abdomen above yellowish, the first 

 two segments black on their lateral margins; beneath black, with 

 yellow borders. Legs light yellowish, the coxa; black. Genitalia; 

 last ventral segment very small, less than half as long as the penultimate; 

 rounded broadly on its posterior margin, black on the anterior, and light 

 yellow on the posterior; valve black, inore than twice as long as the last 

 ventral segment, rounded at its apex; plates long triangular, yellow, 

 with occasional black spots, tips rounded. Pygofers large, longer 

 than the ]jlates, very spiny, the spines forming a crown at the tip; 

 ventral color black at base, yellow at the tip ; dorsal yellow, but black at 

 the bases of the lateral margins and the tip black. 



Female — General color the same as the male. Head soinewhat 

 sharper and more pointed. Genital apparatus, last ventral segment 

 black, a little larger than the penultimate, sinuate on the middle, the 

 posterior margins curving slightly to the sides; pygofers yellowish, 

 more or less colored with brown and black, widely separated at the base, 

 but converging towards the tip; the amount of brown coloration of the 

 pygofers varies but as a rule is confined to the basal half; ovipositor 



