234 EDWARD NORTON. 



B. — Emarginations of third segment wider, edges of its semicircle turned 

 up. — (Elampus). 

 Postscutellum mucronate. 



Claws with three inner processes. 



Tergura roughened, without distinct punctures; wings hyaline. 



versicolor. 

 Claws with about four inner pectinations. 



Tergum covered with small punctures; apical two-thirds of wings 

 obscure Yiridicyaiieus. 



Elampus sinnosnin. 



Hcdychntm sinuosiim Say, Macl. Lye. i, 1828, 82. 



Hedychrum Janus Hald., Proc. Acad. Nat. Sci. ii, 55. 

 iTai.— Mass., Penn., 111., (Coll. Am. Ent. Soc.) ; Iowa, (Say). The 

 color is almost entirely bright purple-violet, with the face, sides and 

 most part of legs blue-green. 



Elampiis iridescens n. sp. — % . — Color of face and the two basal joints 

 of antennae green; occiput, prothorax and tergum, with purple reflections; 

 remainder of thorax and legs cyaneous; tarsi luteous; wings hyaline, with 

 the apical half of upper pair obscure; occiput, pro- and mesothorax, apical 

 half of scutel, and tergum, polished, without punctures; basin of face and the 

 outer orbits with delicate cross striae; area below postscutel punctured, semi- 

 circular, wider than deep, its lower middle narrowly prolonged to the junction 

 of the side foveolse on the central metathoracic ridge; margin of third segment 

 of tergum with a deep angulate incision, above which extends a transparent, 

 slightly notched membrane; sides rather unisinuate; spurs of anterior tibiae 

 not pectinate. Length .15 inch. 



Hah. — Conn., Penn., (Coll. Am. Ent. Soc.) Four specimens. 



Elampus Iseviventris. 



Omalus IcEviventris Cresson, Proc. Ent. Soc. Phil, iv, 1865, 303, ^ . 



Hah. — Colorado, (Coll. Am. Ent. Soc.) 



Elampus coruscans n. sp. — 9- — Color blue-green, with purple reflec- 

 tions above, greenish beneath; wings hyaline, their apical third obscure; 

 occiput, pro- and mesothorax and apical third of scutellum, polished and 

 covered with large subobsolete punctures; tergum polished, having minute 

 sparse punctures, which are larger and sub-effaced on the sides; basin of face 

 polished; the punctured area below postscutel produced angularly as far as 

 the side foveola; sides of margin of third segment of tergum unisinuate, 

 slightly pinched; claws pectinate with about five distinct teeth. Length 

 .14— .25 inch. 



Hah. — Can., Conn., (Coll. Am. Ent. Soc.) Two specimens. 



Elampus speculum. 



Hedychruvi speculum Say, Bost. Jour, i, 1835. 285, 2, 'J, . 

 Hah. — Illinois, (Coll. Am. Ent. Soc.) Color almost wholly bright 

 green. Although the edges of the apical membrane are not turned 



