68 HYMENOPTERA. 



truncate behind ; the winp;s splendidly iridescent, having a broad 

 fuscous cloud at their ii])c.\, testaceous at their extreme base, as 

 well as the nervures and tej^idic ; the tibijc ami tarsi biij;lit ful- 

 vous, their jiubesceuce pale. Alxlomen ovate, the two basal seg- 

 ments highly polished, the following segments thinly clothed 

 witli pale ])ubescencc, at the basal margins of the secoml and 

 third a patch of white pulK'scence ; the apex fulvous. 

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



99. Halictus nymi'halis, n. s. B.M. 



Female. Length 2 lines. — Head and thorax brassy green, 

 very delicately and closely jjuiu'tured, more strongly so on the 

 clypeus, which has its anterior margin testaceous, as are also the 

 labrum and mandibles, the latter ferruginous at their apex, the 

 flagellum testaceous beneath ; the tegidic pale testaceous, the 

 wings hyaline, splendidly iridescent, the nervures and stigma 

 pale ; the femora and tibia at their apex and all the tarsi pale 

 rufo-testaceous ; the legs have a ])ale jnibescence. Abdomen pale 

 ferruginous, the third and fourth segments broadly fuscous at 

 their base, the whole thickly clothed with pale pubescence. 

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



100. Halictus Zephyrus, n. s. B.M. 



Male. Length 2f lines. — Head and thorax brassy green, de- 

 licately and very closely punctured, the antennae elongate, ful- 

 vous, above fuscous ; the margin of the clypeus and mandibles 

 ferruginous. Thorax brilliantly glossy above, the punctures 

 scattered and minute; the wings splendidly iridescent, the tegulse 

 ami nervures pale testaceous ; the tibiae and tarsi testaceous, the 

 former stained more or less on each side. Abdomen elongate, 

 subclavate, highly polished, rufo-testaceous, and having a sjdendid 

 green reflection ; the margins of the two basal segments de- 

 pressed, the second and third having laterally a patch of white 

 pubescence at their base ; beneath rufo-testaceous. 

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



101. Halictus PECTORALis, n. s. B.M. 



Female. Length 3 lines. — Black, the head closely and finely 

 punctured, the clypeus more coarsely so, its apical margin smooth 

 and ciliated with fulvous hairs; flagellum testaceous beneath. 

 Thorax strongly punctured on the disk ; metathorax truncate, 

 the enclosed space beneath the post-scutellum rugose, as well as 

 the sides and the entire thorax beneath ; the legs have a pale 

 fulvous pubescence, most dense on the intermediate and pos- 



