HYMENOPTERA 633 



18. Facial impression blue-black or with purple leflections, always shining in 



certain aspects, often nearly smooth, more or less deep and narrow... 19. 

 Facial impression rarely black or with purple reflections, usually green, 

 golden or of other metallic tints, densely and evenly shagreened all over, 



quite dull, more or less wide <ind often shallow 26. 



19- Ovipositor black or dark fuscous above, at most a little pale apically 20. 



Ovipositor largely pale, being at least partly yellow or dull reddish 24. 



20. Front femora for a large pait or altogether yellow or yellowish brown 21. 



Front femora dark, pitchy and metallic, or metallic black, at most pale at the 



tips 23. 



21. Larger, legs except front and hind coxae clear brownish yellow, the hind 



femora a little metallic outwardly E. monas. 



Smaller, legs more or less darkened or sordid in various parts 22. 



22. Middle tibiae brown above, except at base and apex E. astheiies. 



Middle tibiae pallid yellowish throughout E. parastheties. 



23. Front tibiae above uniformly dark or pitchy, metallic E. kptophyas. 



Front tibiae black or metallic black and brightly yellow at the apex E. epilamprops. 



24. Facial impression above with a strong median carina E. dryas. 



Facial impression above with at most a faint trace of a carina 25. 



25. Legs brownish yellow or yellowish brown E. peles. 



Legs pallid yellow E. chloropus. 



26. Ovipositor as long as the abdomen E. euoplias. 



Ovipositor shorter than the abdomen 26a. 



26a. General colour of the front and hind femora and tibiae dark or black metallic 



green, the base and apex usually yellow ■ 27. 



General colour of these parts yellow or brownish yellow, at most somewhat 

 darkened and metallic above or outwardly 34. 



27. Middle femora dark brown or pitchy above and beneath (excepting at the 



extreme base and at the apex) and hardly metallic ; ovipositor black, 



at most pale at the extreme tip E. pelopus. 



Middle femora pale beneath, usually more or less dark only on the posterior 

 face ; ovipositor in some species pale to a considerable extent medially, 

 yellow or obscure reddish 28. 



28. Middle tibiae almost uniformly pale and not, or hardly perceptibly, metallic 



above ; ovipositor black E. ntelanacrias. 



Middle tibiae more or less darkened and metallic above over a considerable 

 portion of their surface, or if not very noticeably darkened, the ovipositor 

 is more or less pale, at least dull reddish in part 29. 



29. Ovipositor black E. epimelas. 



Ovipositor pale, yellowish, reddish or obscure red in the middle 30. 



30. Abdominal pleura with wide dark bands, that are hardly metallic, separated 



by metallic bands E. cluilcoprepes. 



Abdominal pleura nearly uniformly metallic 31- 



31. Intermediate abdominal segments metallic blue or green with narrow, dark 



and hardly metallic apical margins E. caerulophanes. 



Intermediate abdominal segments above dark blackish fuscous, dull bluish 

 black or purple-black, with bright metallic tints, at most, only at the 

 extreme base 32. 



32. Head in front aspect between the front ocellus and the facial impression 



hardly shining or dull, densely sculptured ; mesonotal ridges red or rosy 

 metallic 33 • 



