262 



MKMOIBS OF THE QUEENSLAND MUSEUM. 



3. Abdomen metallic 

 Abdomen not metallic . . 



4. Abdomen bright steel-blue. (Brisbane, 12-2-18) 

 Abdomen greenish. (Brisbane, 12-2-18) 



5. Abdomen red, head black 

 Abdomen black or dark-brownish 



G. Smaller : mesothorax shining 



Larger ; mesothorax dullish, with larger scattered punctures. 



4. 



5. 



. . caloundrensis Ckll. 



dampieri Ckll. 



(). 



7. 



erythrurus Ckll. 

 (Oxley, Brisbane, 



brisbanensis Ckll. 



Sei)t., 19U ; Brisbane, 4-9-14, (i-10-14, 26-9-l()) 

 '7. Head metallic . . . . . . . . . . . . . . . . . • . • > . 8. 



Head black 9. 



8. Stigma very dark. (Brisbane, 12-2-18, National Park, Q., Dec, 1919) . . urbanus Smith. 



Stigma reddish ; scutellum shining, steel-blue, contrasting with the green mesothorax 



urbanus var. lornatice n. var. 



. . limntiformis n. sp. 



9. Mesothorax green, dullish 

 Mesothorax blue . . 

 10. Mesothorax steel-blue, highly polished ; stigma dark 

 Mesothorax not polished ; stigma pallid 



The Queensland specimens were all collected by Mr. Hacker. 



10. 



humiliformis n. sp. 

 viesocyaneus n. sp. 



Halictus purnongensis Cockerell. 



The range is greatly extended by a male from Brisbane, 6-10-14 {Hacker) 

 It represents a variation with the hind margins of the abdominal segments dark 



Halictus erythrurus Cockerell. 

 Brisbane, 3-10-16, a variation with tegulse darker than usual. 



Halictus olivinus n. sp. 



Male. Length about or nearly 5 mm., slender, head and thorax shining dark 

 olive green, the metathorax steel-blue, contrasting ; labrum and mandibles dark- 

 reddish ; head unusually broad, eyes strongly converging below, clypeus polished 

 and shining, front dull, shining along orbits ; scape black ; flagellum long and slender, 

 ferruginous beneath ; mesothorax shining but not polished, scutellum highly 

 jjolished ; area of metathorax large, with weak striae, apical margin thickened ; 

 posterior truncation without sharp lateral edges ; hair of head and thorax extremely 

 scanty, white ; tegulae pale tes'.aceous ; wings hyaline, faintly dusky ; stigma 

 piceous ; marginal nervure dark, the other nervures mainly pallid, the outer recurrent 

 and intercubitus hardly visible ; first submarginal cell much larger than the other 

 two combined ; second submarginal very narrow, third almost as narrow as second ; 

 first recurrent nervure meeting second intercubitus ; femora rufopiceous, knees, 

 tibiae, and tarsi pale ferruginous ; abdomen dark brown, brightly polished, venter 

 "with erect hair. 



