128 
4. Pteronus longulicornis Norton. 
1835. Nematus longicornis Say. Boston Journ. Nat. Hist., i, p. 219. 
1859. Nematus longicornis Say. LeConte, Say's Entomology, ii, p. 07!). 
1861. Nematus longicornis Norton. Proc. Bost. Soc. Nat. Hist., yiii, p. 158. 
1867. Nematus longulicornis Norton. Trans. Am. Eut. Soc, I, p. 214. (Cat., etc., 
p. 76.) 
Black; orbits, lace below an tenn;r. teguhe. anterior angle, pleura (except black 
spot on female), the whole body beneath, and legs whitish. Length 0.26; br. wings 
0.54 inch. 
Female. — Body rather long; antenna- black, nunc than two-thirds tho body, slen- 
der, third and fourth joints equal, head rather smooth; sutures at sides of ocelli 
distinct; lower ocellus in a basin, which is smooth and shining, obovate, with dis- 
tinct edges; nasns angnlate, emarginate; labium emarginate; a spot on vertex from 
antennae to summit, and the back of head black; remainder pale; a slender ridge 
runs through the groove on anterior lobe of thorax; the tegnhc, anterior angle, 
pleura, and whole body beneath whitish, except two black spots on pleura, the ante- 
rior one large and lnnnlatc; scutel black; sutures of abdomen indistinctly pale; legs 
pale, with the apical half of hinder femora and tibia> and their tarsi blackish; inner 
tooth of claws large and near the tip; wings hyaline; st igma full ; nervines and 
stigma piceous; base of stigma and costs pale. 
Hale. — Antenna- fulvous beneath, third joint shorter than fourth, curved at base; 
a straight, black line under the anterior wings; tips of posterior tibia- blackish, their 
femora pale; stigma color of costa. 
Iowa (Say), Connecticut, New York, Pennsylvania, Great slave Lake, Hudson 
Bay Territory. 
This species seems to be allied to corneUi u. sp. 
5. Pteronus (?) nortonii Da 11a Tone. 
1867. Nematus fallax Norton. Trans. Am. Ent. Soc., [, p. 108. (Cat., etc., p. 60.) 
1894. Nematus nortonii Dalla Torre. Cat. llym., i, p. 246. 
Black ; mouth, cheeks, apex of \ enter, and tibiae in part reddish white; a black line 
down the tibia- above ; body slender; length 0.18 to 0.20; br. wings 0. 11 to 0.48 inch. 
Male. — Snining black; body slender ; antenna- rather long and slender, ferruginous 
beneath; nasns hardly incurved and with mouth below; lower half of cheeks and 
apex of venter yellow red; legs at base black, below the base of femora yellow red, 
with a blackish line down their upper side; inner anterior tibial spur stout; inner 
tooth of claw nearly as large as outer; wings perfectly hyaline, iridescent; stigma 
somew hat rounded above and with the costa pale greenish. 
Labrador \\. S. Packard, jr. }. Two males. 
(}. Pteronus rufofasciatus Norton. 
1867. Nematus rufo-fasciatus Norton. Trans. Am. Ent. Soc, I, p. 205. (Cat., etc., 
p. 67.). 
Black; a baud on the middle of abdomen and most part of Legs rufous; wings 
smoky hyaline; length 0.34 ; br. wings 0.70 inch. 
Female. — Black ; body long and moderately stout; antenna? about two-thirds tho 
length of body, slender, cylindrical, third joint but little longer than fourth; head 
dull, with coarse, continent punctures; nasus coarsely punctured, deeply channeled 
across the middle, angnlate, emarginate; edge of labrum incurved; outer orbit 
and a spot opposite ocelli on each side, labrum, and palpi rufous; upper half of 
anterior angle and basin on each side of scutel rufous; abdomen, except the basal 
plates and three apical segments, chestnut red; legs the same color; coxa 1 , except at 
tip, black ; anterior inner tibial spur stout, apparently bifid ; inner claw tooth large; 
wings smoky hyaline, nervines piceous; stigma and costa pale. 
Mackenzie River, Hudson Bay Territory (R. Kennicott). 
