256 AMERICAN NEUROPTERA 



Potamorites virgin i«-a n. sp. 



Face reddish yellow; vertex black, behind yellowish, the antennae black ; legs 

 and palpi clear pale yellowish: tarsi darker; spines black, short; thorax and 

 abdomen yellowish: wings uniform blackish; costal veins dark, others paler; a 

 white dot, furcate toward base, on the thyridium, and a smaller one at the arcu- 

 lus; there are indistinct traces of various hyaline dots, especially in the costal 

 and apical regions; wing with a gray fringe, quite long on the costal margin; 

 discal cell shorter than its pedicel ; membrane faintly granulate, a larger and 

 darker granule in the base of the third apical cell ; apex of wing rather broad 

 and rounded (not obliquely truncate) ; hind wings broad, uniformly gray, with 

 a gray fringe, fourth apical cell broader than third at base. 



Length 13 mm. 



Richmond, Virginia (Mrs. A. T. Slosson). 



Evidently closely related to the European P. biguttatus, but with 



broader wings. 



C'hseto|>t«*ryg<>|>sis parvula n. sp. 



Face yellowish, vertex more brownish, nearly flat, basal joints of antennae long, 

 brown, rest of antennae yellowish, joints tipped with brown, thorax dirty yel- 

 lowish, legs clear yellowish, with fine black spines, rather fewer on tibia? than 

 usual, spurs 1—2-2; fore wings pale brownish, indistinctly irrorate with hyaline, 

 anastomosis darker, surface distinctly rugulose, sparsely clothed with short yel- 

 low hair, a circular white spot containing a brown central dot in base of the third 

 apical cell, veins pale, wing rather broad and short, apex rounded, discal cell 

 nearly twice the length of its pedicel, first apical cell some distance on discal cell, 

 fifth apical cell scarcely on thyridial cell at all, the cubital veins not fractured at 

 posterior anastomosis; margin with a scant fringe, nearly as long on costal as on 

 apical margin. Hind wings not much shorter than fore wings, hyaline, with 

 yellowish veins and pubescence, a brown dot in base of third apical cell, fourth 

 apical cell broad at base. 



Lengl h 8.5 mm. 



New Brunswick, N. J. (Prof. J. B. Smith). 



tfotidobia americana n. sp. 



Head black, with tufts of black hair from the warts on the vertex ; maxillary 

 palpi flattened and upcurved, masking the face, yellowish white, with short 

 whitish hair; antennae black, basal joint yellowish below, not elongate; thorax 

 black, with black hair; legs light brown, middle and hind tibia- and tarsi paler, 

 spurs 2-2-4 ; abdomen black; the genitalia yellow; wings blackish, with much 

 black and a little yellow pubescence; hind wings blackish, with dark gray 

 fringe, discal cell closed, that of fore wings open: inferior appendages long. 

 sickle-shaped, upcurved, slender at base. 



Length 12 mm. 



Falls Church, Virginia, June. 



Heteroplectron iiigripeimi* n. sp. 



Head yellowish, with hunches of black hair each side below antenna? and 

 behind each eye, vertex shows a blunt median ridge; palpi and antennae black. 

 densely black-haired ; thorax dark brown, with black hair; legs black, thickly 



