HYMENOPTERA. 59 



laterally, the following segments thinly covered with white pubes- 

 cence ; beneath, the margins fringed with long pale pubescence. 

 Hab. Van Diemen's Land. (CoU. J. S. Baly, Esq.) 



74. Halictus cognatus, n. s. B.M. 



Male. Length 2 lines. — Black, the disk of the thorax seneous, 

 the flagellum fulvous beneath, the face clothed with white pu- 

 bescence, the apex of the clypeus, labrum and mandibles yellow, 

 the latter ferruginous at the tips. Thorax shining, finely but 

 not very closely punctured, thinly covered with white pubescence, 

 the enclosed space at the base of the metathorax rugose, beyond 

 which the sides are shining and smooth ; the tegulae yellow an- 

 teriorly and rufo-piceous behind ; the wings hyaline and splen- 

 didly iridescent, the nervures and stigma pale testaceous, the 

 tarsi pale testaceous. Abdomen globose, the basal margin of 

 the second segment much depressed, the whole finely punc- 

 tmed. 



Obs. This is probably the male of H. globosus; specimens 

 have been received on two or three occasions in company. 

 Hab. Van Diemen's Land. 



75. Halictus limatus, n. s. B.M. 



Female. Length 2\ lines. — Black, except the disk of the 

 thorax, which is brassy green ; mandibles ferruginous. Thorax 

 having scattered shallow punctures ; the base of the metathorax 

 covered with radiating striae, which become obsolete at the 

 margin of the truncation which is smooth and shining ; wings 

 hyaline, splendidly iridescent, nervures ferruginous, stigma fus- 

 cous, tegulae pale testaceous. Abdomen ovate, highly pohshed, 

 smooth and impunctate, the anal rima fulvous. 

 Hab. Van Diemen's Land. 



T^. Halictus globosus, n. s. 



Female. Length 2i lines. — Black, the disk of the thorax 

 having an aeneous tinge ; flagellum fulvous beneath, mandibles 

 ferruginous at their apex. Thorax very closely and finely punc- 

 tured, the base of the metathorax finely reticulate, at its sides 

 a tuft of white pubescence ; the sides of the thorax have a white 

 pubescence, most dense at the shoulders ; the legs rufo-testa- 

 ceous, tarsi fen-uginous ; wings hyaline, iridescent, neiTiu-es and 

 tegulae pale testaceous ; beneath, covered with fulvous pubescence ; 

 the tibiae, particularly the posterior pair, covered with a change- 

 able sUvery white pubescence. Abdomen subglobose, nigro- 



