long's second expedition. 205 



Body hairy ; antennae fuscous, less than half the length of the 

 body, filiform ; orbits above and before, and hypostoma glabrous, 

 white, the latter with a broad, transverse, brownish line near the 

 tip; labrum white, with two obsolete, dusky, longitudinal spots; 

 maxillary palpi black ; a large, transverse quadrate, black, gla- 

 brous spot, surrounding the base of the antennae ; thorax, ante- 

 rior segment five-lines, lines equal; feet whitish, hairy, four 

 anterior thighs annulate with brown near the tip, their tibia at 

 tip and annulus near the base, brown ; pleura, incisures whitish ; 

 wings hyaline, with numerous irregular, unequal, black and white 

 points and spots, which are larger on the inner and outer margin ; 

 nervures and margins alternately spotted with blackish and white; 

 nervures of the disk with only a single line of connecting ner- 

 vures which pass across the middle ; margin with numerous ner- 

 vures ; inferior wings without spots, excepting on the margin. 

 Length to tip of the wings one inch and a quarter. 

 Rather rare in Pennsylvania. We obtained a specimen in 

 the North-west Territory, and Mr. Isaiah Lukens informed 

 me that they are extremely numerous near Lake Erie in June. 



[This was described by Fabricius, under the name Semblis 

 punctata, Ent. Syst., 73. He afterwards described it, Ent. Syst., 

 Supp. 202, as Hemerobius nebulosus. It is also Polystoechotes sticti- 

 cus Burm. Handbuch. ii. p. 982. Osmylus validus Walker, Brit. 

 Mus. Cat. 233, 3, and Hemerobius irroratus, Fitch, 1st report, 

 p. 92, 1. The name must now remain Polystoechotes imnctatus. — 

 Uhler.] [307] 



2. H. vittatus. — Pale yellowish, with a black vitta on the 

 pleura; abdomen fuscous; wings spotted with black. 

 Inhabits Pennsylvania and New Jersey. 



Head with a transverse, quadrate, dusky spot between the 

 eyes ; antennae somewhat longer than the head and thorax, yel- 

 lowish-rufous, blackish at tip and base ; eyes prominent, black ; 

 thorax greenish-white, dusky between the wings, first segment a 

 little narrowed before ; wings hyaline, with black spots ; costal 

 uervures articulate with black and white ; a small white spot 

 near the costal tip of each wing; inferior wings with fewer spots 

 than the superior ones, but behind the costal middle is a large 

 orbicular spot, and a smaller irregular one near the tip ; meta- 

 thorax blackish above ; pleura with a broad blackish vitta, ex- 



