W. L. MC ATEE 295 



distinctly oblique. The known range of the species extends fi-oin 

 New York and Wisconsin to ^'irginia, Tennessee and Kansas. 



Key to the Color Varieties 



A. Color inarkiiifis, in part, red to sanguineous. 

 B. Basal tegminal band sanguineous to dusky. 



C. Other markings chiefly red var. basilaris Say, p. 29.5. 



CC. Other markings chiefly yellow. 



var. basilaris Say, yellow form, p. 2i)."). 

 BB. Basal tegminal band jnnkish, other markings chiefly yellow. 



var. dulcis new variety, \). 'J'.)('». 

 AA. .\11 color markings yellow var. affinis Fitch, p. 29<'). 



Erythroneura basilaris var. basilaris Say 



(iround color of body pale yellow, of tegmina whitish hyaline. Vertex 

 marked with redtlish to livid, often leaving only two pairs of small spots near 

 eyes and a larger median one of ground color exjwsed; pronotum slaty be- 

 hind, a triangular red patch on each side and a U-shaped marking in middle 

 more or less connected with four smaller reddish markings along anterior 

 margin; scutellum, cither partly or entirely sanguineous to dusky; basal 

 third (about to middle of but not involving costal plaque) of tegmen of 

 same color, relieved by more translucent spots near humerus, inner apical 

 angle, and an irregular transverse one on corium midway between costal 

 plaque and humeral spot; paler red markings on tegmen as follows: spot 

 near tip of clavus, near this on corium, an inverted V-shaped marking with 

 inner ramus much longer (sometimes broken uj) into spots), first and second 

 cros.s- veins and faint-costal etlging; aj)ical cells yellowish fumose caudally, 

 a black spot at base of the fourth cell. Face and legs more or less tinged 

 with yellowish to reddish. 



Length, 1.83 mm.; vertex: LM 6, LE 4, WA 13, WP 19.5, OA 7, OP 11.5, 

 OH IG; pronotum L 11, W 21; tegmen 1.3-58. Measurements taken from 

 a male, collected at Plummer's Island, Maryland, Dec. 14, 1913, (W. L. 

 McAtee). 



Other specimens examined came from Plunnner's Island, Mary- 

 land; Maywood, Virginia; Oxford, Indiana; Iowa City, Iowa; 

 Manhattan and Onaga, Kansas, and Clarksville, Tennessee. 



Erythroneura basilaris var. basilaris Say, \ ellcjw form 



Like the preceding except that the red markings on head, i)roiiotum, and 

 tegmina are replaced by pale yellow; markings on head and ant(>rior i)ui-f ol 

 pronotum sometimes livid. 



Length, 2.7 mm.; vertex: LM 5, LE 3, WA 12, WP 19, OA 5.5, Oi- 11, 

 OH 16; pronotum: L 9.5, W 20; tegmen 14-56. Measurements from a 

 female; Plummer's Island, Maryland, July 19, 1914, (W. L. McAtee), [W. L. 

 M.]. 



TRANS. .\M. ENT. SOC, XLVI. 



