324 Trans. Acad. Sci. of St. Louis. 



of mandibles more or less rufous, a greenish spot at base ; 

 antennae black, flagellum paler beneath ; mesonotum densely 

 and evenly punctured; metathorax with disc short, longitudi- 

 nally striate, truncation rounded above; wings subhyaline, 

 nervures, stigma and tegulae exteriorly testaceous ; legs 

 brownish, sometimes quite black, tibiae and tarsi sometimes 

 ferruginous yellow ; hind spurs finely serrate ; anterior, and 

 sometimes middle, femora reflecting more or less greenish 

 beneath; narrow margins of abdominal segments black, 

 sometimes wanting, abdomen beneath blackish. Length 7-9. 



^. — Eesembles the female, more bluish, more sparsely 

 punctured, labrum and mandibles honey yellow, flagellum 

 beneath and tegulae testaceous, tibiae and tarsi usually yellow, 

 hind tibiae sometimes darker in the middle and reflecting a 

 little metallic, femora bluish or greenish, sometimes with the 

 trochanters quite pale and showing only a little bluish beneath ; 

 ventral segments entire, middle ones greenish. Length 6-8 

 mm. 



Illinois, New York, Mass. ; 41 5, 8 $ specimens. 



AUGOCHLORA CONFUSA. 



Augochlora pura Robertson, Trans. Am. Ent. Soc. XX, 146, ?<j\ 1893. 



2. — Resembles female of preceding, but a little smaller, 

 face and mesonotum reticulated on the sides, face narrower, 

 emaro-ination of eves less acute; process of labrum smaller, 

 more rounded ; mandibles darker, rufous at tips ; disc of 

 matathorax longer, more coarsely rugose, sometimes bordered 

 by salient rim; truncation very narrow, rounded above; sec- 

 ond submarginal cell short ; legs more uniformly dark, all the 

 femora, and sometimes tibiae, metallic; abdomen less shin- 

 ing, more pubescent, segments without black edges, venter 

 usually reflecting greenish. 



£. — Differs from male of preceding in characters common 

 to both sexes, in its clypeus anteriorly and labrum being 

 paler, femora and middle of tibiae darker and more metallic, 

 tarsi, except apical joints, paler, ventral segments not metal- 

 lic, fourth widely emarginate. 



Illinois; 52 $, 11 $ specimens. 



