138 [June 



aciculate, bilineated ; basal foveas of the second segment small ; ovipo- 

 sitor not exserted. Length^! lines; expanse of wings 12 lines. 



Hah. — Pennsylvania. E. T. Cresson. 



Allied in form and color to the preceding species, but is smaller, the 

 antennae much shorter, and the sculpturing of the metathorax is very 

 different. 



• 5. Ich. Afer, n. sp. 



Black; antennae with a yellowish-white annulus; wings subhyaline; central 

 area of metathorax large and quadrate. 



Feinale. — Deep black, shining, closely and finely punctured ; an- 

 tennae two-thirds as long as the body, porrect, the 11th to 16th joints 

 yellowish-white, basal joint robust ; middle of the face just beneath the 

 antennae prominent. Scutellum slightly convex ; metathorax finely 

 scabrous, the elevated lines distinct, the central area large, quadrate, 

 slightly ti'ansverse. Wings subhyaline, tinged with fuliginous and hav- 

 ing a slight violaceous reflection; nervures and stigma blackish; areolet 

 5-angular or subtriangular. Legs black, the anterior tibijB and all the 

 tarsi at tips piceous. Abdomen robust, shining, finely punctured ; pe- 

 tiole slender ; the first segment broad, finely aciculate ; basal foveae of 

 the second segment indistinctly impressed ; ovipositor not exserted. 

 Length h\ lines; expanse of wings 9 lines. 



Hah. — Illinois. Dr. Samuel Lewis. 



Closely allied to Ich. ^nalacus Say, but is smaller and with clearer 

 wings. I have before me 14 specimens of malacits, all of which have 

 the central area of the metathorax large and quadrate, and the wiugs 

 dark fuscous with a rather strong violaceous reflection. Length 6j — 

 TA lines; expanse of wings 12 — 13 lines. 



5. Ich. ater, n. sp. 



Black: anteunpe with a white annulus; wings subhyaline; central area of 

 metathorax large, subquadrate. 



Female. — Black, subopaque; head with narrow white frontal orbits 

 not reaching the clypeus which is shining and having a rather deep 

 rounded fovea on each side; antennae short, flattened towards the tip 

 and slightly involute, the 8th and 14th joints white. Thorax finely 

 punctured, subopaque ; a minute white spot on each side in front of 

 the tegulje ; scutellum flat, triangular, polished, distinctly punctured ; 

 metathorax finely scabrous, the elevated lines tolerably well defined and 



