43 6 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



basal one-third ; tarsi pale, apical segment blackish. Venter 

 shining black. 



Female: Length 3 mm., width 1.3 mm.; very slightly more 

 robust than the male but very similar in coloration. 



Holotype: Male, 27 July, 1915, Batavia, N. Y. (H. H. Knight) ; author's 

 collection. Allotype: same data as the type. Paratypes : Males and 

 females (14), topotypic. Massachusetts — Female, 24 "July, 1914, Beach 

 Bluff (H. M. Parshley). Male, 3 July, 1914, Danvers (C. W. Johnson). 

 Male and females (3), 26 July, 1916, Pigeon Cove (C. E. Olsen). Male, 

 13 July, 1905, Springfield (C. W. Johnson). Michigan — Female, 5 July, 

 1919, Berrien County (R. F. Hussey). Males (2), 15 July, 1914, Grand 

 Junction, Minnesota — Males and females (9), 12 July, 1919, Hennepin 

 County (H. H. Knight). New Jersey — Female, 27 June, 1908, Lakehurst 

 (Wm. T. Davis). New York — Female, 6 July, 191 5, Wyoming County 

 (H. H. Knight). Males and females, 31 July, 1915, White Plains (J. R. 

 Torre-Bueno). Ontario — Males and females, 10 July, 1915, Parrv Sound 

 (H. S. Parish). 



Plagiognathus flavicornis Knight, new species. 



Larger and more robust than nigronitens, about the size of 

 politus but antennal segment ii pale except narrowly at base while 

 the cuneus remains uniformly black like the corium. 



Male: Length 3.5 mm., width 1.6 mm. Head: Width .73 mm., 

 vertex .38 mm. ; blackish, vertex and front yellowish brown. Ros- 

 trum, length 1.1 1 mm., scarcely attaining hind margins of inter- 

 mediate coxae. 



Antennae: Segment i, length .28mm., black, apex pale; ii, 

 1. 16 mm., pale yellow, narrowly black at base, the apex dusky; iii, 

 .83 mm., fuscous, slightly paler at base; iv, .55 mm., fuscous. 



Pronotum: Length .61 mm., width at base 1.16 mm. ; black, 

 shining, clothed with pale yellowish pubescence, a prominent black 

 hair at each anterior angle. Scutellum black, minutely transversely 

 rugulose. Sternum and ostiolar peritreme black, opaque. 



Hemelytra: embolar margins moderately arcuate, more dis- 

 tinctly so than in politus ; uniformly black, shining, the cuneus not 

 at all paler on basal margin ; clothed with yellowish to dusky, 

 pubescence. Membrane and veins uniformly dark fuscous, 

 scarcely paler bordering cuneus. 



Legs: Black, apices of femora pale; tibiae pale, knees, and 

 spot at base of spines, black, spots much reduced or absent on 

 apical one-third. Venter black, shining. 



Female: Length 3.3 mm., width 1.6 mm. ; very similar to the 

 male in coloration but in form more robust ; embolar margins dis- 

 tinctly arcuate, hemelytra much broader on apical half than at base. 



Food plant : Myrica gale. 



Holotype: Male, 27 July, 1915, Batavia, N. Y. (H. H. Knight) ; author's 

 collection. Allotype : same data as the type. Paratypes : Illinois — Male 

 and females (6), 4 Aug., 1906, bog at Cedar Lake (C. A. Hart). Massa- 

 chusetts — Male, 3 Aug., 1918, Oak Bluffs; male and female, 15 July-6 

 Aug., 1917, Woods Hole (C. E. Olsen). Female, 1 Aug., female, 13 Aug.. 

 female, 27 Aug., Swampscott (H. M. Parshley). Minnesota — Males and 



