30 AMERICAN NEUROPTERA. 



segments of the % abdomen bear a dense brush of hair, dark in middle, pale at 

 ends. 



Sea Cliff, N. Y. ; common near streams, March, April and May. 



Heteroplectron (?) dissiinilis n. sp. — Lengrth 10.5 mm. ; alar expanse 

 19 mm. Dull black, palpi paler, hairy, last joint slender, rather longer than the 

 next to last; anteunse pale, basal joint fuscous, longer than diameter of eye, 

 scarcely annulate beyond, longer than the wings; legs yellowish, spurs 2-4-4; 

 abdomen black, segments margined with white, especially the last ventral. Wings 

 blackish, sparsely clothed with black and yellow haii-s. fringe black ; venation 

 much as in H. borealis, but the upper fork of the upper branch of radial sector is 

 angulate and connected to radius, beyond the angle it is concave (in H. borealis 

 it is straight), this makes the first apical cell wider in the middle ; the lower 

 branch of radial sector is forked, but much nearer to tip; at about region of 

 anastomosis the veins are faint, and somewhat coalesce as in U. borealis; at this 

 point there is a hyaline spot; behind there are two transverse veinlets as in that 

 species; hind wings rather broad, blackish, with black fringe. 



Several specimens, Sea Cliff, N. Y., June and July. This is hardly 

 a true Heteropleciron, yet congeneric with what I take to be Pro- 

 vancher's H. borealis. The general arrangement of the venation is 

 like that of Heteropleciron, but the anterior cross-veins are rather 

 indistinct, besides the spurs are 2-4-4 in what seems to be a male, 

 and there is no fringe on hind tibia. 



Poly^-eiitropus signatiis n. sp. — Length 8 mm.; alar expanse 15 mm. 

 Head and thorax with long yellowish white hair, blackish behind the eyes; an- 

 tenuEe yellowish, annulate with fuscous; palpi ])ale, dark at tip; abdomen dark 

 above, pale below ; legs yellowish ; wings with pale veins, mostly clothed with 

 black hair, some pale hair on veins toward the base, a large yellowish white spot 

 on the disc, connected behind to one at the arculus. a third over the region of 

 anastomosis, black on costa ; hind wings gray, also black on costa ; both branches 

 of the radial sector are forked, the lower at connecting veinlet, the upper rather 

 to this veinlet than to margin ; both branches of cubitus forked, the lower one 

 much the nearer to the base; spurs 3-4-4 ; the inferior pieces of the % genitalia 

 are quite long, swollen above near the base, and then concave to the tip. 



One male, Buffalo, N. Y., August (E. P. Van Duzee), 



Polycentropus afflnis u. sp. — Length 6 mm.; alar expanse 11 mm. 

 Head and thorax with long yellowish hair, fuscous behind the eyes and on sides 

 of thorax; antennpe luteous, barely annulate with fuscous; palpi pale; legs lu- 

 teous, with whitish hair; wings grayish, with scattei'ed yellow hair, a white spot 

 at the forking of the cubitus, with a downward projection, another white spot on 

 the veinlet connecting branches of cubitus and radial secttor, upper branch of 

 radial sector not forked. 



Two specimens, one Ontario, Canada ; the other Buffalo, N. Y. 

 (E. P. Van Duzee). Very close to P. lacidus, but latter has upper 

 branch of radial sector forked, and hyaline spots differently arranged. 



