80 HYMENOPTERA. 



temiediate and posterior tarsi, covered above with fuscous \)u- 

 bescence, beneath it is fulvous ; wings hyahne, the tegulae testa- 

 ceous on the outer margin, the nervures pale testaceous, costal 

 nervure ferruginous. Abdomen ovate, thinly scattered over with 

 griseous pubescence ; at the basiil margins of the second and 

 third segments a fascia of yellow pubescence ; the basal segment 

 more strongly punctured than the rest of the abdomen. 



Obs. This species most closely resembles A. diversipennis, but 

 independent of other differences, the legs are black and the basal 

 segment of the abdomen is longer. 

 Hab. Mexico. 



21. AUGOCHLORA LABROSA. B.M. 



Halictus labrosus. Say, Bost. Journ, Nat. Hist. i. 394. 3. 

 Hab. Mexico ; North America. 



22. AuGOCHLORA RADIATA. 



Halictus radiatus. Say, Bost. Journ. Nat. Hist. i. 394. 2, ? . 

 Hah. United States. 



23. AuGOCHLORA FESTIVA, n. s, B.M. 



Female, Length 3^^ lines. — Brilliant green, having a golden 

 tinge on the face and disk of the thorax, the abdomen blue- 

 green ; head and thorax closely and finely punctured, the cly- 

 ])eus coarsely so ; at the base of the metathorax an enclosed 

 space, the space covered with radiating striae, margined by a 

 sharp bent ridge ; the wings fulvo-hyaline, iridescent, nervures 

 ferruginous ; coxae green, the femora dark rufo-testaceous, the 

 tibiae and tarsi bright ferruginous, their pubescence fulvous, in 

 certain lights having a silvery brightness. Abdomen beneath 

 dark rufo-piceous. 



Hab. St. John's Bluff, East Florida. (E. Doubleday, Esq.) 



24. AuGOCHLORA GRATIOSA, n. S. B.M, 



Female. Length 3 lines. — Brilliant green, the head closely 

 and finely punctured, the clypeus much produced and coarseh- 

 punctured at The apex, flagellum fulvous beneath ; disk of the 

 thorax strongly and very closely punctured ; the base of the me- 

 tathorax not distinctly enclosed, rugose-striate, ha\4ng behind 

 a waved ridge, the truncation transversely roughened. Thorax 

 beneath roughened with uniting punctures; wings subhyaline, 

 nervures rufo-testaceous ; legs testaceous, the coxae and femora 

 having a green reflection ; apical joints of the tarsi feiTUginous, 



