140 [June 



deeply impressed in front and connected with the mesothorax on each 

 side by a sharp carina; uietathorax scabrous, opaque black, the elevated 

 lines broken and indistinct, the central ai-ea obsolete, the lateral tuber- 

 cles prominent. Wings ample, blackish-fuscous, with a slight viola- 

 ceous gloss; areolet 5-angular, the exterior nervure of which has a 

 small hyaline spot on its middle, the cubital nervure and the second 

 recurrent nervure, near the areolet, have also a small hyaline spot. 

 Legs black, shining, the anterior femora with a whitish spot at tip and 

 their tibiae a whitish line on the inner side. Abdomen elongate, slen- 

 der, black with a slight tinge of blue ; the basal segment elongate, with 

 two well defined carinas extendin"; from the ano-le forward on the 

 petiole, on each side of the angulation a minute tubercle ; the first and 

 second segments roughly punctured, the latter having the basal foveas 

 transverse and rather deep ; the fourth and following segments pol- 

 ished; venter black, shining. Length 9 lines; expanse of wings 15? lines. 



Hah. — Kocky Mountains, Colorado Territory. 



I dedicate this very distinct and elegant species to my friend Mr. 

 Charles A. Blake of Philadelphia. 



9. Ich. flavicornis, n. sp. 



Black, opaque; antennse orange-yellow ; wings dark fuscous, with a strong 

 peneous reflection ; central area of metathorax large, subquadrate, transverse. 



Male. — Opaque deep black; head with the frontal orbits yellow, 

 sometimes subobsolete or wanting ; antenna two-thirds the length of 

 the body, orange-yellow, with the extreme base and apex blackish, scape 

 deep black. Thorax closely punctured, with a rather deep indentation 

 on each side of the mesothorax in front; scutellum convex, punctured, 

 somewhat shining, deeply impressed in front and connected to the 

 mesothorax on each side by a sharply defined carina, metathorax sca- 

 brous, the elevated lines tolerably well defined, the central area rather 

 large and transverse. Wings dark fuscous, with a strong asneous reflec- 

 tion ; nervures and stigma black; areolet 5-angular or subtriangular. 

 Legs black, the anterior pair tinged with pale rufous on the inner side. 

 Abdomen elongate, opaque black, immaculate, densely and finely punc- 

 tured ; basal segment finely aciculate, bilineated ; basal foveas of the 

 second segment rather large and deep, more coarsely aciculate; beneath 

 black. Length 9 lines; expanse of wings 15i lines. 



Hah. — New York. Mr. James Angus. 



