316 NEARCTIC ERYTHRONEURA (hOMOPTERA) 



vermilion-red (jasper red); all specimens have the upper surface 

 of abdomen dark, and in those with jasper red markings this color, 

 showing through the often yellowish tegmina, gives insects of this 

 variety a peculiar appearance, that differentiates them from all 

 of the other varieties except the next following. 



Length, 3 mm.; vertex: LM 6.5, LE 3, WA 15, WP 21, OA 7, OP 12, 

 OH 17; pronotiim: L 11, W 22; tegmen 13-60. Type, a female. 



Other specimens examined, (2.57 to 3 mm.); Plummer's Is- 

 land, Maryland, March, June, July, November, December; Great 

 Falls, Virginia, April 20, 1916; Odenton, Maryland, July 14, 1918, 

 (W. L. McAtee) ; Iowa City, Iowa, April 6, 1915, (L. L. Buchanan), 

 [W. L. M.]. 



Variants of rubra occur with the color markings on anterior 

 part of dorsum yellow, those posterior red; hence it is probable 

 that an entirely yellow-marked form will be found. 



Erythroneura comes var. rubrella new variety 



Differs from the la.st chiefly in the smaller extent to which the tegmina 

 are covered by the color markings, but it may be remarked that the narrower 

 tegminal vittae of this variety are uniform- in color, while the broader vittac 

 of the preceding variety are almost always paler within, and often a bluish red, 

 margined by deeper color; tegminal markings in the present variety usually 

 vermilion (jasper red) and occupying less than half of the tegminal surface. 



Length, 2.3 mm.; vertex: LM 6, LE 3, WA 11, WP 17.5, OA 5.5, OP 10, 

 OH 14; pronotum: L 10, W 18; tegmen 12-52. 



Tijpe—d"; Plummer's Island, Maryland, Nov. 30, 1913, (W. 

 L. McAtee), [W. L. M.]. Paratypes (2.3 to 2.7 mm.) from same 

 locality as type, January, March, July, November, December; 

 Great Falls, Virginia, July 25, 1914; Majrwood, Virginia, Feb- 

 ruary, March; Scott's Run to Ball's Hill, Fairfax County, Vir- 

 ginia, Aug. 12, 1917, (W. L. McAtee), [W. L. M.]: Paris, Fau- 

 quier County, Virginia, July 29, 1898, [U. S. N. M.]. 



Erythroneura comes var. nudata new variety 



Color of scutellum and anterior parts pale yellowish with irregular jiell- 

 ucid areas, instead of the color vittae and spots usually present in other 

 varieties; tegmina whitish hyaline, apical cells somewhat fumose; costal 

 plaque rather opaque white, an oblique black streak across it posteriorly, 

 and black dots in bases of fourth apical, and apices of se(!ond apical cells. 

 Placed as a variety of comes because of the presence of dark spots in apices 

 of second apical cells, although so far as coloration goes no intergrading speci- 

 mens have been seen. 



