LAWSON: KANSAS CICADELLID^E. 



151 



Internal male genitalia: Styles with a very large and characteristic 

 projection to meet the connective, main body of about uniform diameter 

 till near the apex, then excavated laterally, forming an outwardly curved 

 and knobbed apex, connective very long and slender, notched basally for 

 nearly one-half its length; oedagus with a pair of lateral, dorsally pro- 

 jected processes, and a longer median and terminal process. 



Distribution: Very abundant wherever its host occurs. The 

 following map shows counties in which it has been taken : 



Hosts: Blue grass. 



Deltocephalus oculatus 0. & B. 



Deltocephalus oculatus O. & B., la. Acad. Sci., iv, p. 212, pi. 23, fig. 4, 1897. 

 Deltocephalus oculatus De L., Tenn. St. Bd. Ent., Bui. 17, p. 48, 1916. 

 Deltocephalus oculatus Van D., Cat. Hemip. N. A., p. 648, 1917. 

 Deltocephalus oculatus Fent., Ohio Jl. Sci., xviii, No. 6, p. 184, 1918. 



Form: Like affinis, smaller. Length, 3.5 mm. Vertex slightly longer 

 than width between eyes, obtusely pointed. Pronotum not twice as broad 

 as long, lateral margins short. Elytra long and narrow, much exceeding 

 abdomen. 



Color: Distinctly yellow, face marked with fuscous arcs. Elytra not 

 as bright yellow as vertex, pronotum and scutellum. 



External genitalia : Female, last ventral segment about length of pre- 

 ceding, lateral angles acute, middle third of posterior margin truncately 

 produced, dark, and thin lobed ; pygof ers bristly, broad, equalling ovi- 

 positor. Male, valve broad, triangular, acute apically; plates broad at 

 base, much narrowed apically to the slender, produced apices; pygof ers 

 long and very acute at apices, exceeding plates and spiny. 



