The Ohio Naturalist. 
[Vol. II, No. 6, 
Vertex slightly obtusely angled, twice as long on middle as against the 
eye, as long as the pronotum, posterior margin nearly straight, transversely 
convex, acutely angled with front, the anterior margin blunt. Front wider 
at base than its median length, rounding below to the clypeus. Elytra 
broad, broadly rounding, almost truncate behind, exposing the pygofers and 
last abdominal segment in the brachypterous female ; reaching just to the 
tip of the plates in the macropterous male, exposing the two style-like pro- 
cesses. Venation distinct, typical Athysanoid or not infrequently with a 
second cross uervure between the sectors and a few irregular ones on clavus ; 
apical and anteapical cells broad and short, central anteapieal with the 
margins nearly parallel. 
Color : vertex pale yellow, a light line between the ocelli and another 
along the margin to the apex on each side, forming a triangle which encloses 
a pair of triangular, dark spots. Back of this triangle are two broad, slightly 
irregular spots and another pair occupy the basal angles. Elytra with the 
nervures light, distinct, more or less margined with fuscous. Face pale, the 
sutures dark ; tips of the lorae, a pair of lines on the clypeus and about nine 
arcs on the front, black. 
Genitalia : female segment nearly twice the length of the preceding, trun- 
cate on its middle half, the lateral angles acutely triangularly produced, 
usually clasping around pygofers ; male valve obtusely triangular, equaling 
the ultimate segment in length and nearly in width ; plates as wide as the 
segment, roundingly divergent to the parallel lateral margins, three times 
the length of valve, pygofers compressed beneath the plates, their style-like 
tips extending beyond them the length of the plates. 
Habitat: Canada, N. Y., N. H., Conn., Mich., Iowa, Kans. 
and Colo. The very distinct genitalia of either sex will readily 
separate this species. 
ATHYSANUS ALPINES BALL. 
Athysanus alpinus Ball. Ent. News, X, p. 173. 1899. 
Resembling obsotetus in size and color, with the long vertex of extrusus. 
Straw yellow marked with fuscous, two transverse bauds on vertex, angled 
forward in the middle. Length, 9 5 5 mm., $ 4.5 m.; width 2 mm. 
Vertex as long as the pronotum, slightly obtusely angled, the margins 
rounding, front as in exirusus , the clypeus slightly narrowed towards the 
apex. Elytra reaching the middle of the last abdominal segment in the 
female, slightly longer than the abdomen in the male ; venation rather weak 
and irregular, Athysanoid, the anteapical cells parallel margined. 
Color : vertex pale straw, a transverse, black band arising just back of the 
ocelli, its anterior margin angling forward nearly parallel with vertex mar- 
gin, its posterior margin rounding and paralleled by another less definite 
band on the disc, usually a pair of irregular spots in the basal angles. Pro- 
notum pale, sometimes with four irregular, longitudinal stripes which do 
not reach the anterior margin. Elytra pale yellow, with the nervures light, 
some fuscous blotches, especially in the apical cells in the male. Face pale, 
