304 NEARCTIC ERYTHRONEURA (hOMOPTERa) 



C. Cross-band bounded by a wreath of pale spots, about three on each 

 tegmen anteriorly and four posteriorly 



var. corona new variety, p. 304. 

 CC. Cross-band bounded anteriorly by a more or less interrupted pale 

 area, sometimes reduced to a single spot on elavus, and posteriorly 

 broadly joined to red markings on cross-veins, leaving a pale area 

 only at and adjacent to apex of elavus; the tegmen therefore chiefly 

 red, sometimes with only two pale areas at base and apex of elavus, 

 which latter the middle cross-band usually does not reach. 



var. bistrata new variety, p. 305. 

 AA. Anterior cross-band not extending beyond apex of scutellum, middle 

 cross-band narrower, not reaching apex of elavus. 

 B. Pronotum and scutellum chiefly red to dusky. 



var. stricta new variety, p. 305. 



BB. Pronotum and scutellum, and sometimes anterior cross-band chiefly 



yellow var. stricta new variety, yellow form, p. 300. 



Erythroneura vitis var. vitis Harris 



Bibliographical references same as for species. 



Vertex yellowish with two parallel orange-reddish vittae, broader and deeper 

 colored behind, sometimes almost wholly red; pronotum scarlet with a short 

 median vitta in front, extreme anterior margin, and obsolete discal paren- 

 theses, pale yellow; scutellum chiefly scarlet, basal triangles and basal median 

 vitta sometimes pale; tegmen with three cross-bands, the anterior scarlet 

 extending well beyond apex of scutellum, the median scarlet (often paler red 

 to dusky within), broad, from middle to near tip of elavus; those on the two 

 tegmina together forming a large roundish saddle-spot, sometimes slightly 

 projected along the sectors or connected to anterior band or posterior ramose 

 line at a few points, and terminating laterally at costal placjue, which is black- 

 ish posteriorly and sometimes followed by a yellowish area; third cross-band 

 made by the blackish apical cells which are hyaline basally; a ramose red line 

 on cross-veins and adjoining parts of longituchnal veins. Under surface 

 and legs chiefly pale yellow; mesosternum sometimes dark and pleura 

 touched with red. 



Length, 2.77 mm.; vertex: LM 7.5, LE 4, WA 13, WP 21, OA 7, OP 13, 

 OH 16: pronotum: L 11, W 21; tegmen 15 to 56. Measurements from a 

 female; Washington, District of Columbia, June 24, 1914, (L. O. Jackson). 



Other specimens examined were collected at Plummer's Is- 

 land, Maryland; Washington, District of Colunil)ia, and Riley 

 ('Ounty, Kansas. 



Erythroneura vitis var. corona new variety 



Similar to variety vilts Harris, but middle cross-band on t(>gmina conncctrd 

 by red lines along longitudinal veins to anterior cross-band and to ramose 

 marking on cross-veins, so that the saddl(> mark appears to be surrounded by 

 a wreath of pak; spots. 



Length, 2.S mm.; vertex: LM 7, Li-: 3.5, W A 15, WP 21, OA 7, OP 13, 

 on 17; |)r()iiotum: L 12, W 21.5; tegmen 13-56. 



