NEW AUSTRALIAN BEES. 303 



_ H. humei. — Basal half closely and distinctly punctured ; 

 apical half feebly transversely lineolate, with scattered hair- 

 punctures. (First segment well punctate, though not densely, 

 on apical half ; third segment not even well punctate at base.) 



H. lanuginosus. — Basal part very densely punctured, not 

 unlike front, but apical part with the punctures well separated 

 though very strong, showing the surface, which is coarsely 

 tessellate, with a tendency for the stronger lines to run trans- 

 versely. 



H. gilesi. — Strongly punctured ; very densely basally ; about 

 the middle the punctures are well separated, showing the shining 

 ground, which is transversely lineolate, the lineolae often joining, 

 so that the sculpture becomes subtessellate ; the depressed 

 apical part has the punctures smaller, narrowed, each emitting 

 a hair. 



H. reprasentans. — Very strongly punctured, the punctures 

 extremely dense on basal third, but otherwise well separated, 

 and more or less transversely elongated, but the surface between 

 is shining and smooth. 



The microscopic characters are not repeated in the specific 

 descriptions. 



Halictus bicingulatus, Sm. 



Melbourne; Ent. Club, 44. 12. 



Halictus oxleyi, n. sp. 

 $ . Length about 7 mm., or rather less; black, with the pube- 

 scence yellowish, especially on face, where it is abundant; mandibles 

 rufous, lighter and almost yellow in the middle ; scape dark, but the 

 rest of the antennae light ferruginous, above and below, the flagellum 

 paler and yellower beneath ; metathorax truncate, but the margins not 

 sharply angled ; enclosure shining and smooth, roughened only at 

 extreme base, abruptly ridged transversely by the upper border of the 

 truncation, but the edge is not sharp ; tegulaa large for the genus, very 

 pale testaceous ; wings hyaline, nervures and stigma amber-colour ; 

 b. n. falling far short of t. m. ; femora piceous, with the apex pale 

 ferruginous ; tibiae and tarsi pale ferruginous ; abdomen broad, with a 

 sericeous lustre, piceous, with the hind margins of the segments pallid, 

 but no hair-bands or patches, 



Hob. Adelaide, 59. 52. Allied to H. orbatus, Sm., and 

 globosus, Sm. 



Halictus humei, n. sp. 



2 . Length about 5| mm. ; black, with greyish-white pubescence, 

 quite dull and greyish dorsally, whiter and abundant on the ventral 

 surface of thorax and abdomen ; antenna? dark, the flagellum brownish 

 beneath ; area of metathorax granular, not invading the truncation , 

 tegulae rufo-piceous, with a lighter spot ; wings hyaline, slightly dusky, 

 very iridescent, stigma and nervures reddish brown ; b. n. falling only 

 a little short of t. m. ; first r. n. joining second s. m. near its apex ; 

 third t. c. and second r. n. very weak ; legs piceous, very hairy, the 



