302 NEARCTIC ERYTHRONEURA (hOMOPTERA) 



which enclose two pale saddle-spots, a smaller on inner anterior portions of 

 (!lavi and a larger embracing posterior third of clavi and adjacent j^arts of 

 corium; the anterior i)art of each vitta is confined to cla\us, and the pos- 

 terior part, after angling laterally to costal plaque returns to radial margin 

 and ends abruptly at the cross-veins, a lateral prolongation following them 

 to costal margin; a faint yellow dot at base of corium, usually an oblique 

 yellow streak on anterior margin of costal plaque, plaque itself whitish, a 

 black or bluish dot at its posterior margin, a dusky cloud in base of fourth 

 apical cell, apical cells in general slightly fumose. Undersurface stramineous 

 to yellowish. 



Length, 2.9 mm.; vertex: LM 4, LE 6, WA 12, WP 21, OA G, OP 11, OPI 

 17; pronotum: L 12, W 22; tegmen 15-59. 



Type — c/"; Washington, District of Columbia, July, 1907, 

 (Wm. Palmer), [U. S. N. M.]. Paratypes, same locality, May 

 28th, July 19th, (Wm. Palmer), (Otto Heidemann), [U. S. N. M.]. 



Erythroneura ligata var. allecta new variety 



Like typical variety except that yellow markings of pronotum, vertex and 

 costal margin are replaced by red; apex of scutellum and a spot near tip of 

 clavus also red; touches of red on pleura and face in some specimens. 



Length, 3.03 mm.; vertex: LM 6.5, LE 3.5, WA 14, WP 21.5, OA 7, OP 

 12, OH 17.5; pronotum: L 12, W 22; tegmen 15-60. 



Type — cf ; Washington, District of Columbia, July 19, [U. S. 

 N. M.]. Paratypes— d'; labelled "Peab.", Uhler Collection, 



[U. S. N. M.]. 



Erythroneura infuscata Gillette 



Ti/phocyha rn)iies var. infuscata. Ciillette, C. P. Am. Typhlocivbinae, 1898. 

 p. 764. [Type No. 3451, U. S. N. M., which is labelled "Agricultural Col- 

 lege, Mississippi."]. 



Almost entirely smoky to black, and the only species so colored that is 

 known in its group, namely those with the third sector and fourth apical 

 vein practically continuous and the third and fourth cross-veins in a line 

 almost at right angles to radial margin. 



Smoky brown to black above, in some cases underlaid by deep dull red, a 

 little paler at rondure of vertex, especially on sides, pronotum sometimes 

 faintly paler on disc, and scutellum sometimes with a pale median vitta; 

 tegmina with more or less hyaline spots at base, middle and apex of iiuier 

 margin of clavus, middle of radial margin of fourth apical cell and on costal 

 margin of second api(!al cell; costal plaque opaque whitish, tinged with red, 

 an almost equal area of dull red just posterior, and costal margin and to 

 some extent the cross-veins pencilled with dull red. Face and legs pale 

 yellow more or less tinged or marked with red, remainder of under surface 

 slaty, abdominal incisures, etc., sometimes pale yellow. 



Length, 2.64 mm.; vertex: LM 7, LE 3, WA 11, WP 16.5, OA 5, OP 10, 

 OH 14; pronotum: L 10, W 19; tegmen 14-54. (Type, a female.). 



