70 HYMENOPTERA. 



of the wings, and in the margins of the abdominal segments not 

 being tliickened as in tliiit species. 



Hab. North America; Hudson's Bay. (Coll. E. Doubleday and 

 G. Barnston, Esqs.) 



106. Halictus discus, n. s. B.M. 



Female. Length 4 lines. — Black, head closely punctured, 

 the clypeus produced and ciliated with pale ferruginous hairs. 

 Thorax, the disk shining, having large scattered jiunctures ; 

 metathorax truncate, above coarsely grooved longitudinally ; the 

 tegula; testaceous, wings subliyaline, the nervures ferruginous ; 

 the legs have a silvery pubescence, tinged with yellow in certain 

 lights. Abdomen ovate, shining at the base, finely and closely 

 punctured, except on the basal segment, where they are more 

 scattered ; on the basal margins of the second, third and fourth 

 segments a more or less interrupted white fascia ; the apical 

 margins thickened. 

 Hab. North America. 



107. Halictus coriaceus, n. s. B.M. 



Female. Length 3^-4 lines. — Black, finely and very closely 

 punctured, giving the abdomen a subopake appearance ; the cly- 

 peus produced, shining, and having some large scattered punc- 

 tures, its anterior margin fringed with fuscous pubescence ; on 

 the head, thorax and legs the pubescence is pale fulvous, brightest 

 on the posterior tibiae ; the floceus is of the same colour, but 

 paler ; the legs dark ferruginous, varying in some specimens in 

 being of a brighter hue ; apical joints of the tarsi bright ferru- 

 ginous; wings hyaline. Abdomen, the basal margins of the 

 second, third, and sometimes of the fourth segments have an un- 

 inten-upted band of white pubescence, the apical margins coria- 

 ceous ; beneath rufo-testaceous, the margins of the segments 

 pale testaceous, and having a narrow white marginal fringe. 

 Hab. North America ; Nova Scotia. (Coll. E. Doubleday and 



G. Baraston, Esqs.) 



108. Halictus confusus, n. s. B.M. 



Female. Length 3 lines. — Head and thorax olive-green, finely 

 and verj' closely punctured ; the clypeus usually has a purple 

 tinge and is deeply punctured, its margin ciliated with pale ful- 

 vous hairs, the apex of the flagellum beneath testaceous. Thorax, 

 the enclosed space beneath the post-scutellum has deep radiating 

 rugose striae at the base, the margin smooth, sides of the meta- 

 thorax and the entire thorax beneath roughened, the pvmctures 



