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, regularl}' narrowing to the slightly divergent points, one-half 

 longer than the iiltimate segment, three times the length of the valve. 



Habitat : Colo. 



ATHYSANUS EXITIOSUS, UHLER. (Plate i6. Fig. 2.) 



Cicadula cxHiosa Uhler, Anier. Entomol. Ill, p. 72, 1S80. 



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. Readilj' recognized by the entirely hyaline elytra with dark 



nervures and the long, exserted ovipositor in the female. Length, 9 4-5 nim, 



$ 3.5-4 lum ; 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 the 

 antennae ; clypeus wedge-shaped, broadest above. Eh'tra longer than the 

 abdomen in both sexes, slightly compressed before the flaring apex. Vena- 

 tion Athysanoid, 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 fovir 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 West 

 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 acro.ss 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 , 



