242 THE UNIVERSITY SCIENCE BULLETIN. 



Pronotum twice as wide as long, anterior margin strongly convex, lateral 

 and humeral margins about equal, posterior margin distinctly concave. 

 Elytra moderately long. 



Color: Greenish-yellow. Vertex yellowish, a median line, a spot on 

 either side, and one on posterior margin near each eye, white. Pronotum 

 yellowish, becoming greenish posteriorly, anterior margin with three 

 white spots, and with a distinct pale median longitudinal line. Scutellum 

 yellowish, often with a broad white median line. Elytra greenish, apices 

 smoky, nervures broadly pale. Face yellowish above, greenish below. 



External genitalia: Female, last ventral segment long, posterior mar- 

 gin medially produced; pygofers rather robust, spiny, considerably ex- 

 ceeded by the ovipositor. Male, last ventral segment large, concave, 

 and therefore the posterior margin appearing notched; plates long and 

 narrow, each bearing two rows of long bristles, the tips upturned; py- 

 gofers very short, completely hidden by the plates. 



Distribution: Gillette's record of specimens from Greeley 

 county is our only record of this species in the state. 



Hosts: De Long reports sweeping this species from weeds, 

 grass, and red clover, and also taking it around lights. 



Empoasca mali (LeB.). 



(PI. 16, figs. 7-8.) 



Tettigonia mali LeB., Prairie Farmer, xiii, p. 330, 1853. 



Empoa albopicta Forbes, 13th Rept. 111. St. Ent., p. 181, pi. 14, 1884. 



Empoasca mali Osb., Proc. la. Acad. Sci., i, pt. 2, p. 126, 1892. 



Empoasca mali Gill., Proc. U. S. Natl Mus., x.x, p. 744, 1898. 



Empoasca mali Lugg., 6th Rept. Minn. St. Ent., p. 131, 1900. 



Empoasca albopicta Washb., 9th Rept. Minn. St. Ent., p. 59, 1904. 



Empoasca mali Washb., 9th Rept. Minn. St. Ent., p. 91, 1904. 



Empoasca mali Osb., 20th Kept. N. Y. St. Ent., p. 543, 1905. 



Empoasca mali Washb., U. S. Dept Agr., Bur. Ent., Bui. 52, p. 43, 1905. 



Empoasca mali Washb., 12th Rept. Minn. St. Ent., p. 11, 1908. 



Empoasca mali Webs., Jl. Ec. Ent.. ii, p. 211, 1909. 



Empoasca mali Webs., Ent. News, xxi, p. 266, 1910. 



Empoasca mali Webs., la. St. Col. Exp. Sta., Bui. Ill, 1910. 



Empoasca mali Washb., Jl. Ec. Ent., iii, p. 162, 1910. 



Empoasca vialv Sand., Jl. Ec. Ent., iii, p. 210, 1910. 



Empoasca mali Washb., 13th Rept. Minn. St. Ent., p. 31, 1910. 



Empoasca mali Osb., U. S. Dept. Agr., Bur. Ent., Bui. 108, p. 100, fig. 28, 1912. 



Empoasca mali Hase., Jl. Ec. Ent., vi, p. 240, 1913. 



Empoasca mali Ess., Inj. Benef. Ins. Calif., edn. 2. p. 62, 1915. 



Empoasca mali Osb., Me. Agr. Exp. Sta., Bui. 238, p. 153, 1915. 



Empoasca mali Webs., la. St. Col. Exp. Sta., Bui. 155, p. 395, 1915. 



Empoasca mali Gibs., Can. Ent., xlviii, p. 178, 1916. 



Empoasca mali DeL., Tenn. St. Bd. Ent., Bui. 17, p. 102, 1916. 



Empoasca mali Van D., Cat. Hemip. N. A., p. 705, 1917. 



Empoasca mali Lathr., Jl. Ec. Ent., xi, p. 144, 1918. 



Empoasca mali Lathr., N. Y. Agr. Exp. Sta., Bui. 451, p. 185, 1918. 



Empoasca mali Pent., Ohio Jl. Sci., xviii, p. 186, 1918. 



Empoasca mali Ball, Jl. Ec. Ent., xii, p. 149, 2 pi., 1919. 



Empoasca mali Ball, Wise. Dept. Agr., Bui. 23, p. 76, 5 pi., 1919. 



Empoasca mali Laihr., S. C. Agr. Exp. Sta., Bui. 199, p. 122, 1919. 



Empoasca mali Fluke, Jl. Ec. Ent., xii, p. 256, 1919. 



Empoasca mali Ack., U. S. Dept. Agr., Bur. Ent., Bui. 805, p. 1, 1919. 



