HYMENOPTERA. 61 



43. HaLICTUS LiETUS. 



Halictus laetus, Brulle, Hist. Nat. II. Canar. ii. 88. 33. 

 Hab. Canary Islands. 



44. Halictus concinnus. 



Halictus concinnus, Brulle, Hist. Nat. II. Canar. ii. 88. 34. t. 3. 

 f. 13. 



Hab. Canary Islands. 



45. Halictus unicolor. B.M. 

 Halictus unicolor, Brulle, Hist. Nat. It. Canar. ii. 88. 35. 

 Hab. Canary Islands; Madeira. 



46. Halictus chalcodes. 



Halictus chalcodes, Brulle, Hist. Nat. II. Canar. ii. 8/. 31. 

 Hab. Canary Islands. 



47. Halictus cylindricus. 



Hylseus cylindricus, Fabr. Ent. Syst. ii. 302. 1 ; Syst. Piez. 



p. 319. 1. 

 Halictus cylindricus, Brulle, Exped. Sc. Moree, Zool. iii. 552. 



778. 

 Hab. Germany; Morea. 



48. Halictus implicatus, n. s. 



Male. Length 4 lines.- — Black, the clypeus much produced, 

 its anterior margin broadly yellow, with a central angular 

 stripe above, the labrum yellow ; antennae as long as the head 

 and thorax, fulvous beneath. Thorax very finely and closely 

 punctured on the disk, covered on the sides and beneath with 

 long white pubescence ; the anterior tibiae and tarsi, and apical 

 joints of all the tarsi, feiTuginous ; wings hyahne, nervures fus- 

 cous, the enclosed space at the base of the metathorax rugose. 

 Abdomen elongate, shining, minutely punctured, the base th'nly 

 covered with long white pubescence. 

 Hab. Canary Islands. (Coll. W. "W. Saimders, Esq.) 



49. Halictus facilis, n. s. B.M. 



Male. Length 1| line. — Head and thorax of a metallic blue, 

 the former obscm-e ; the face below the insertion of the antennaj, 

 the labrum, mandibles, palpi, tongue, and the flagellum beneath, 

 yellow, the latter ferruginous above ; the legs yellow, the femora 



d2 



