82 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Elytra short, half longer than broad, not quite covering the fifth abdo- 

 minal segment, obliquely truncate from apex of clavus, the outer cor- 

 ner rounding, apical cells minute or wanting; wings rudimentary. 

 Abdomen stout, ultimate tergite much enlarged, overlapping the pygo 

 fers, a deep transverse furrow before the posterior margin in the female. 



Color: Grayish olive with indistinct brownish maculations above, 

 all dark below; vertex, basal two-thirds olive brown with a large 

 obscure brownish spot on either basal half, a brown line anteriorly 

 margining a white spot against either eye and continuing faintly across 

 the disc, a broad margin before this line yellowish white, with four 

 dark spots in a row between the prominent reddish-brown ocelli. 

 Front dark brown with light arcs and a light dash below, cl\i)eus light 

 yellow with a large brown spot on the disc below, rest of face light 

 with heavy dark-brown sutures. Pronotum nearly tinicolorous, in 

 strongly marked specimens five longitudinal light stripes appearing. 

 Elytra sub-hyaline, the nervures light with narro.v fuscous mar^iins, 

 usually a dark spot behind the middle of the clavus, another behind 

 the first cross-nervure on the corium, and a third one on the costal 

 margin in line with the other two; abdomen black, last dorsal segment 

 broadly \ellow, with two approximate black spots near the anterior 

 margin, pygofers black on base and sides above, apex yellow; below all 

 black except legs, which are more or less yellow on the other margins. 



Macropterous fonti differs only in that the elytra and wings are fuUv 

 developed, exceeding the abdomen by one-half mm.: Venation; veins 

 on clavus with only one cross-nervure, apical cells long, central ante- 

 apical cell long, divided, the posterior part entirely beyond the apex 

 of clavus, outer anteapical narrow, giving off a costal veinlet at either 

 end. 



Genitalia: $, ultimate ventral segment moderately long, slightly 

 narrowing on the sides, outer angles cut off obliquely, posterior margin 

 truncate, but so strongly elevated in the middle behind as to appear 

 to be angularly emarginate from the outer angles, jiNgofers short, 

 stout, equalling the ovipositor, clothed with a few short spines; cf, 

 valve t-wice wider than long, rounding exposed part of plates scarcely 

 as long as valve, their tips rounding half the width of the valve, side 

 margins nearly straight, oblique, pygofers extending much beyond the 

 plates, their tips armed with a whorl of long bristles. 



Described from three macropterous and three brachypterous exam- 

 ples, two examples from Texas (Aaron), three from Orizaba, Vera 

 Cruz (Osborn). and one from Arizona (Gillette). 



