HYMENOPTERA. 75 



lights. Abdomen ovate, very convex, the fifth segment covered 

 with fulvo-fuscous pubescence, the anal rima fulvous. 

 Hab. Brazil. 



5. AUGOCHLORA GRAMINEA. B.M. 



Megilla graminea, Fabr. Syst. Piez. p. 334. 29, $ . 



Halictus nigro-marginatus, Spin. Ann. Soc. Ent. Fr. xi. 137. 85. 



Male. — Closely resembling the female, but more elongate, very 

 closely and finely punctured throughout, the clypeus produced, 

 the margin of the clypeus, labrum and mandibles yellow, the an- 

 tennae fulvous beneath ; the tegulse pale testaceous, the knees and 

 apical joints of the tarsi testaceous. Abdomen, the apical margins 

 of the segments black ; beneath they are rufo-testaceous, as well 

 as the apical segments. 

 Hab. Brazil ; Cayenne. 



6. AUGOCHLORA TiTANIA, U. S. B.M. 



Female. Length 2 lines. — Head and thorax bright golden- 

 green, closely and finely punctured. Thorax, the base of the 

 metathorax has a radiating finely rugose striation, not distinctly 

 enclosed ; wings rufo-hyaline ; legs rufo- testaceous, the anterior 

 tibiai and the tarsi palest. Abdomen clavate, purple metallic, 

 being much narrowed at the base, which is highly polished, re- 

 flecting the bright green of the thorax ; the apical margin of the 

 basal segment depressed. 

 Hab. Para. 



7. AuGOCHLORA UraNIA, U. S. 



Female. Length 3 hues. — Head and thorax brassy-green, 

 very finely and closely punctured, the apex of the clypeus very 

 coarsely punctured and of a purple metallic hue ; labrum and 

 mandibles of an obscure rufo-testaceous colour, nearly black ; 

 legs black ; the coxse alone have a metallic tinge, the tarsi lighter, 

 their pubescence fuscous, in certain lights having a silvery re- 

 flection, on the tarsi beneath fulvous ; wings rufo-hyaline, iri- 

 descent ; the enclosed space at the base of the metathorax 

 covered with radiating striae, enclosed by a shining ridge. Ab- 

 domen blue-green, the margins of the segments black, smooth 

 and shining, covered with a thin short griseous pubescence, in- 

 terspersed with fuscous pubescence, beneath dark rufo-testa- 

 ceous. 



Obs. Very similar to A. Floralia, differing chiefly in the colour 

 of the legs, abdomen and wings. 

 Hab. Brazil. (CoU. W. W. Saunders, Esq.) 



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