OSBORN AND BALL STUDIES OF NORTH AMERICAN JASSOIDEA. 79 



rather narrow. Venation nearly as in weedt; inner claval nervure 

 strt)ngly arcuated, joined to the outer nervure by two cross-veins, one 

 at the middle and another at the tip, a number of transverse veins 

 between the outer claval nervure and the suture, central anteapical 

 cell long, constricted in the middle and divided by a broad transverse 

 vein, a number of irregular veins along the costa. 



Color: Light grayish, maculate, with a broad interrupted crescent 

 across the middle of the vertex and several spots on the anterior mar- 

 gin of the pronotum black. Vertex light-) ellow, a transverse inter- 

 rupted crescent across the middle of the disc, a narrow line extending 

 back from the point of interruption on either side of a median im- 

 pressed line, black, a pair of rectangular spots just inside the ocelli 

 before the crescent, another longer pair just back of the produced 

 white tipped apex and a curved line on the margin either side of the 

 apex, dark reddish-brown, a large irregular circle back of the crescent 

 on either side brownish, ocelli red, broadly margined with white, eyes 

 dark, their inner margin reddish. Face, brownish olive, with the 

 suture darker and lighter arcs on the front. Pronotum grayish olive 

 with an irregular black mark from behind either eye running towards 

 the disc, and a concave row of points between the inner angles of the 

 e\es black, scutellum light yellowish, a black spot just inside either 

 basal angle and usually some markings on the disc, black. Elytra 

 light, nervures broadly white, cells margined with fuscous, which is 

 usually emphasized on the middle of the clavus, just inside the middle 

 of the corium, and in three spots on the costal margin. Below, light 

 in female, dark in the male, legs light, anterior femora annulate with 

 black. 



Genitalia: 9 ultimate ventral segment, with an additional mem- 

 brane as in compactus the outer one, half as long as its width at the 

 base, the side margins rounding to the nearly truncate apex and dis- 

 closing the outer corners of the second membrane apex elevated over 

 the base of the ovipositor and usually marked with dark: c?, valve 

 large, triangular; plates small, about twice the length of the valve, 

 broad at the base,rapidIyroundinglynarrowing to the produced attenuate 

 points, margin with a few long light bristles; pygofers longer, the 

 l^lates acuminate at the apex, densely clothed with coarse bristles. 



Described from numerous specimens. 



This neat little species is closely related to weedi and compactus and 

 would fall between them in the synopsis. Tt may be readily separated 

 from either by the absence of the reddish-brown color so characteris- 



