236 The Ohio Naturalist. [Vol. II, No. 6, 



front is bounded by a cordate black line, the inner ends of the arcs are united 

 by a pair of median longitudinal lines and there is a pair of black spots above 

 the antennae. Pronotum pale green, the anterior margin darkened along the 

 suture. Elytra pale greenish subhyaline, the nervures slightly lighter. 



Genitalia : female segment twice the length of the penultimate, posterior 

 margin truncate, the lateral angles roimding, a triangular, median notch 

 nearly to the middle ; pygofers long, fairly stout, as long as the ovipositor. 

 Margins of the notch, the ovipositor and short hairs on the pygofers black. 

 Male valve as broad as the ultimate segment and about as long, obtusely tri- 

 angular ; plates stout, a little over twice as long as the valve, and entirely 

 concealing the pygofers, triangularly narrowing to the broad, roundingly 

 divergent apices. Entire surface thickly set with short, dark hairs. 



Habitat : Ontario, Iowa and Colo. 



Readily separated from sfriolus by the larger .size, shape of the 

 vertex and genitalia. 



SUBGENUS CONOSANUS NOV. 



Head eqtialing the pronotum in width ; vertex broad, trans- 

 versely convex, bluntl}' angtilate before, angulate with the front, 

 the margin obttisely rounding or the whole front and vertex tmited 

 to form a bluntly pointed cone. Front somewhat inflated, broad 

 above, regularly narrowing to a parallel margined clypeus. Ely- 

 tra variable, sometimes shorter than abdomen in female, .sometimes 

 longer in both sexes, always inclined to be flaring posteriorly, 

 giving a parallel margined effect to the whole insect. Venation 

 variable, the second cross nervure often present in the species with 

 .short wings. Those with long elytra have the central anteapical 

 cell prodticed posteriorly and enlarged at the apex. 



Type of the .subgenus obsoletus Kirschb. Common to Europe and 

 America. 



Key to the Subgenus. 



A. Species stout, elytra usually shorter than or only .slightly exceeding the 

 abdomen, almost truncate at the apex, the central and anteapical cell 

 rarely constricted and not extending posteriori}- beyond the adjacent 

 cells as far as its width at middle. Color pale straw, fuscous or black. 



B. Straw colored ; stout, resembling obsoletus, or fuscous with a broad 

 light spot on the cross nervure {varus). 

 C. Vertex distinctly angled, twice as long on middle as at eye, 

 as long as the pronotum. 



D. Vertex with a straight, light line between the ocelli, 

 separating two small triangular spots on apex from 

 two broad obscure ones on disc. Lower corners of 

 male pygofers extending as long, style-like points, 

 much longer than plates. extrusus Van U. 



DD. Vertex with a pair of transverse bands broken for- 

 wards in the middle, male pygofers with the lower 

 corners acutely produced but not extending beyond 

 the plates. ' alpiuus Ball. 



