10*2 HYMENOPTERA. 



2. Omalus c^RULEUs, Dahlb. Dispos. 5, 3; Hym. Eur. 



ii. 34, 12. 



Chrysis cwrulea, De Geer, Mem. Ins. ii. 837, 2. 

 Dahlb. Exercit. Hym. 33, 17. 



Sphex violacea, Scop. Ent. Carn. p. 298, 793 ? 



Omalus nitidus, Panz. Faun. Germ. 



Chrysis fuscipennis, Dahlb. Mon. Chrys. Suec. 15, 13. 



Hedychrurn bidentulum, Shuck. Mon. Chrys. Ent. Mag.iv. 



Elampus violaceus, Wesra. Bull. Acad, des Sc. Brux. vi. 

 171, 2. 



Length 2 — 2| lines. Deep blue-black, highly polished, 

 smooth and shining on the pro- and mesothorax ; the head, 

 anterior margin of the prothorax, the scutellum, post-scu- 

 tellum and metathorax strongly punctured; in some examples 

 tinted with violet ; the abdomen smooth and shining, not 

 pubescent, the margins finely punctured, and usually brilliant 

 green, with the disk black, or blue-black, the colour changing 

 in different lights; the apex notched; wings and legs as in 

 the preceding species. 



All my specimens of this species were bred from bramble 

 sticks. 



3. Omalus nitidus, Panz. Faun. Germ. 85, 13. 

 Chrysis cenea, Fabr. Ent. Syst. ii. 242, 17 ; Syst. Piez. p. 



175,24? 

 Panz. Faun. Germ. 51, 7 ? 

 Omalus ceneus J Dahlb. Mon. Chrys. Suec. 17, 6; Hym. 



Eur. ii. 35, 13. 

 Chrysis ccernlea, Dahlb. Excer. Hym. p. 33, 17. 

 Hedychrurn bidentulum, Shuck. Mon. Chrys. Ent. Mag. 



iv. 174, 8. (var. 1.) 

 Length 2—3 lines. Shining dark blue, purple-blue, 

 bluish-green, or blue, with an seneous tinge ; very variable in 



