THE FAMILY EUCHARIDAE — GAHAN 439 



Abdominal petiole very nearly twice as long as broad and very 

 nearly as long as bindcoxae; mesepimeron wbolly opaquely 

 sculptured robertsoni, new species 



16. Supraclypeal area at least as broad as long; clypeal foveae un- 



usually large and deep; abdominal petiole about as broad as 

 long, evenly sculptured dorsally and dark bluish in color. 



bakeri, new species 

 Supraclypeal area at least a little longer tban broad; clypeal 

 foveae relatively smaller and much shallower ; abdominal 

 petiole usually, but not always, distinctly longer than broad, 

 often somewhat irregularly sculptured and usually more or 

 less metallic green 17 



17. Stigmal vein subquadrate or not much longer than broad 18 



Stigmal vein more slender and two or three times as long as broad 19 



18. Abdominal petiole only a little longer than broad; scapulae 



obviously more weakly sculptured and more shining than the 

 prescutum; general color blackish aeneous to dark green; 



scape reddish testaceous cockerelli, new species 



Abdominal petiole nearly twice as long as broad ; scapulae only 

 very slightly more weakly sculptured than prescutum ; general 

 color bright metallic green ; scape more or less metallic viridis Ashmead 



19. Color usually bright metallic green tinged with blue or purple, 



but occasionally more or less aeneous — > wheeleri Wheeler 



Dull dark green, almost black with a slight greenish tinge. 



occidentalis Ashmead 



20. Abdominal petiole longer than posterior femur ; scutellum with 



a median depression 28 



Abdominal petiole shorter than posterior femur ; scutellum 



without a median depression 21 



21. Abdominal petiole barely longer than hindcoxa and with some 



distinct longitudinal rugae 22 



Abdominal petiole distinctly longer than hindcoxa and without 



distinct longitudinal rugae 23 



22. Axillae and scapulae smooth or very weakly sculptured and shin- 



ing; general color metallic green coloradensis Wheeler 



Axillae and scapulae strongly sculptured and mat ; general color 



dark aeneous minuta Ashmead 



23. Abdominal petiole very nearly or quite twice as long as posterior 



coxa ; clypeal fovea unusually large and deep bakeri, new species 



Abdominal petiole not over one and one-half times as long as 

 posterior coxa 24 



24. Stigmal vein slender and two and one-half to three times as long 



as broad wheeleri Wheeler 



Stigmal vein broader and shorter 25 



25. Color dark green strongly tinged with aeneous cockerelli, new species 



Color bright bluish green tinged with purplish on coxae and 



abdomen viridis Ashmead 



26. Bright golden green; propodeum medially coarsely pitted and 



with an irregular median carina aureoviridis, new species 



Dark green with a strong aeneous tinge; propodeum finely 

 alveolate with a few irregular rugae medially but without 

 coarse pits beameri, new species 



