102 THE UNIVERSITY SCIENCE BULLETIN. 



KEY TO SPECIES. 



A. With longitudinal stripes on vertex, pronotum and scutellum, 



octo-lineata. 

 AA, No longitudinal stripes on vertex, pronotum and scutellum. 



B. Very broad species, green or black. melanota. 



BB. More slender species, gray or brown, usually spotted. 

 C. Brownish species, veins not punctate laterally. 



D. Without submarginal spots on pronotum; not irro- 

 rate with red. pect oralis. 



DD. With four, anterior, submarginal spots on prono- 

 tum; often irrorate with red. puncticollis. 



CC. Grayish species, veins distinctly punctate laterally. 



cinerea. 



Gijpona octo-lineata (Say). 



(PI. 10, figs. 1-2.) 

 . lettigonia vctulineata Say, JI. Acad. Nat. Sci. Phila., iv, p. 340, 1824; Compl. Writ., 

 ii, p. 257. 



Gypona striata Burni., Genera Ins., i, pi. 16, No. 9, 1838. 



Gypoiia cana Burm., Genera Ins., i, pi. 16, No. 10, 1838. 



Gypona fiavilineata Fh., Houiop. N. Y. St. Cab., p. 57, 1851. 



Gypona quehecensis Prov., Nat. Can., iv, p. 352, 1872. 



Gypona fiavilineata Spangb., Spec. Gypouae, p. 8, 1878. 



Gypona scrupnlosa Spangb., Spec. Gypona?, p. 9, 1878. 



Gypona olivacea Spangb., Ent. Tidskr., p. 24, 1881. 



Gypona octo-lineata Uhl., Stand. Nat. Hist., ii, p. 247, 1884. 



Gypona octo-lineata Van D., Psyche, v, p. 390, 1890. 



Gypona octo-lineata O. & B., Proc. la. Acad. Sci., iv, p. 179, 1897 (part). 



Gypona octo-lineata Osb., 20th Rept. N. Y. St. Ent., p. 512, 1905. 



Gypona fiavilineata Osb., Me. Agr. Exp. Sta., Bui. 238, p. 105, 1915. 



Gypona octo-lineata DeL., Tenn. St. Bd. Ent., Bui. 17, p. 31, 1916. 



Gypona octo-lineata Van D., Cat. Hemip. N. A., p. 611, 1917. 



Gypona octo-lineata Gibs., Proc. U. S. Natl. Mus., Ivi, p. 90, 1919. 



Gypona octo-lineata Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 41, 1919. 



Form: A large oval species. Length, 7 to 10 mm. Vertex broadly 

 rounded, thin-margined, over half as long as basal width. Pronotum 

 characteristic of the genus, narrowed anteriorly, anterior margin broadly 

 though slightly convex, posterior margin about equally concave, lateral 

 margins long, humeral margins shorter. Scutellum large. Elytra long, 

 tapering posteriorly, sometimes reticulately veined, including the clavus. 



Color: Light green usually, often darker. Vertex with six yellowish 

 or red longitudinal lines, pronotum with eight, scutellum with four. 

 Nervures of elytra varying from yellow to red. The red stripes and veins 

 give the brightly-colored forms a distinct reddish look. 



External genitalia: Female, last ventral segment longer than pre- 

 ceding segment, narrowed posteriorly, longest laterally partially due to 

 posterior margin being turned downward and forming a broad, rounded, 

 median excision extending a third of the distance to the base; pygofers 

 broad and long, exceeding ovipositor, bearing a few stout hairs on apical 

 third. Male, last ventral segment very long, slightly notched medially, 

 concealing valve; plates long and narrow, longer than last ventral seg- 

 ment, widely separated at base, overlapping apically, nearly or quite 

 equalling the short pygofers. 



