234 
The Ohio Naturalist. 
[Vol. II, No. 6, 
of minute, approximate points on disc and sometimes one on either side 
near the base. Pronotum pale straw-colored, four small spots back of the 
margin, the inner pair approximate ; scutellum with a pair on the disc. 
Elytra with the nervures pale. Dark specimens may have brown stripes in 
the cells and along the claval sutures. Face pale, a pair of quadrate spots 
just beneath the inner pair on vertex, a smaller pair beneath the outer ones, 
a pair of oblique marks near the apex of front and the suture below them, 
black. 
Genitalia : female segment twice the length of the penultimate, shallowly 
emarginate posteriorly with a broad, slightly bilobed median process, pygofers 
broad, equalling the ovipositor ; male valve broad, obtusely rounding ; plates 
broad at base, regularly' narrowing to the slightly divergent points, one-half 
longer than the ultimate segment, three times the length of the valve. 
Habitat : Colo. 
ATHYSANUS EXITIOSUS, UHLER. (Plate 16, Fig. 2.) 
Cicadula exitiosa Uhler, Amer. Entomol. Ill, p. 72, 18S0. 
Very variable in size and color ; usually a pair of round, black spots inside 
and slightly below the ocelli and a pair of oblique dashes in the basal angles 
of the vertex. Readily recognized by the entirely hyaline elytra with dark 
nervures and the long, exserted ovipositor in the female. Length, 9 4-5 mm, 
S 3.5-4 mm ; width, 1.25 mm. 
Vertex two-thirds the length of the pronotum, half as long as its basal 
width, rounding insensibly into the front ; front wedge-shaped below llie 
antennae ; clypeus wedge-shaped, broadest above. Elytra longer than llie 
abdomen in both sexes, slightly compressed before the flaring apex. Vena- 
tion Atliysanoid, the apical cells long and narrow, appendix broad, extend- 
ing entirely around the end of the wing : entire apex of the elytra very frail 
and often wanting in old specimens, the appendix especially so. 
Color : vertex pale, washed with orange, a pair of round, black spots just 
over the margin onto the front and a pair of oblique dashes in the basal 
angles, sometimes constricted in the middle, between their anterior extrem- 
ities lies a brownish crescent, its anterior margin definite and parallel with 
the vertex margin. Pronotum cinereous with four black spots back of the 
anterior margin ; scutellum with heavy, black triangles within the basal 
angles and a median, posteriorly' divided, stripe sometimes broken up into 
dots. Elytra hyaline with a milky reflection, nervures narrow, dark. Face 
pale yellow ; front with two black spots on margin above, and numerous 
dark arcs on disc. Pale specimens may have nearly’ all these spots wanting 
except the round ones on vertex margins and the triangles of the scutellum. 
Very' dark specimens, including most of those from Mexico and the Vest 
Indies, have these marking very broad and often confluent and the elytra 
smoky iridescent. A variety’ from Hayti has the vertex creamy with a 
transverse band across the middle and the spots in front black in sharp con- 
trast, the pronotum with four longitudinal stripes. 
Genitalia : female segment twice the length of the penultimate, truncate 
behind; pygofers rather slender, ovipositor long, attenuately pointed,. 
