1865.] 103 



cous ; the costal nerve and the stigma blackish-fnscons ; in some speci- 

 mens there is a faint iridescent reflection. Legs, including the coxae, 

 rufous, slightly pubescent ; posterior legs shaped as in Smiera, their 

 femora with a large blackish stain on the outside near the base, their 

 tilnre more or less varied with blackish, sometimes entirely piceous-black. 

 Abdomen fusiform, black or piceous-black, smooth, shining, apex pro- 

 duced and attenuated; the sixth segment has a few large, deep punc- 

 tures; the sheath of the ovipositor is nearly as long as the abdomen. 

 slightly compressed, broad at base, and gradually tapering to a point at 

 tip; the base on each side has a few scattering punctures, becoming 

 very dense beneath, and on each side of the groove beneath, which re- 

 ceives the ovipositor, there is a row of deep punctures, continued to 

 almost the tip; dorsal segments have a beautiful violet reflection in 

 certain lights, more obvious in some specimens than in others, and in 

 certain lights the disk is tinged with obscure rufous; sides of the seg- 

 ments clothed with short glittering pubescence, more sparse on the first 

 and second segments; beneath, the segments are more or less tinged 

 with rufous. Length, including sheath of ovipositor, 4 J — 5 lines; ex- 

 panse of wings 6 — 6 J lines. 



Male. — Resembles the female, except that the prothorax is obscurely 

 rufous, the scutellum not so strongly produced and piceous, and the 

 abdomen is almost entirely rufo-piceous, the apical margins of the apical 

 segments are punctured, and their sides with a band of pale glittering 

 pubescence at tip; the apical segment is obtuse and deeply punctured. 

 Length ?>\ lines; expanse of wings 5 lines. 



Collection. — Ent. Soc. Philad. Three 9 , one % .specimens. 



Fam. chrysldim:. 



Genus ELAMPUS. Spin. 

 Elampus viridis, n. sp. 



Bright metallic green, the head and abdomen with a blue reflection; grossly 

 punctured, the abdomen, except apex, smooth ; scutellum armed behind with 

 a broad, flattened, obtuse process; tarsi fulvous: wings subhyaline. 



Male? — Head bright metallic green, with a deep bluish reflection, 

 especially on the face, which is broadly excavated ; the punctures deep 

 and rather close, except in the excavation of the face which is finely 

 rugulose ; mandibles pubescent, fulvous, deep blue at base ; antenna? 

 piceous. the basal joint blue-green. Thorax deeply and closely punc- 

 tured, bright metallic green, the collar tinged with deep blue, the nieso- 

 thorax tinged with golden ; pleura, scutellum and metathorax much 

 more closely punctured than the rest of the thorax ; scutellum large, 



