6 Mr. T. D. A. Cockerell — Descriptions and 



stigma short, rufo-piceous, nervures redder ; outer t.-c. and 

 r. n. almost wholly invisible, but the shadowy third s.m. 

 very high aud short. Femora black, the knees, tibia?, and 

 tarsi ferruginous, middle and hind tibiae suffused with dusky. 

 Abdomen dark, with a strong tinge of blue-green or bluish, 

 hind margins of segments piceous, first segment shiniug, the 

 others duller ; a curled scopa of white hair on abdominal 

 venter. 



Microscopical characters : — Front lineolate and punc- 

 tured ; mesothorax minutely tessellate and with very minute 

 punctures ; tegulae impunctate ; first abdominal segment 

 with excessively minute punctures, the other segments feebly 

 transversely striolate and with very minute piliferous punc- 

 tures ; hind spur with two long blunt teeth. 



Hab. Bribie Island, Queensland, Nov. 2, 1913 (H. 

 Hacker). Queensland Mus. 114. 



The following table separates it from its nearest rela- 

 tives : — 



Stigma pale testaceous Jloralis, Srn. 



Stigma dark fuscous or rufo-fuscous 1. 



1. Apical part of stigma abbreviated ; mesothorax 



dark blue : smaller species pavonellus, Ckll. 



Stigma normal; mesothorax dark green: larger 



species dampicri, Ckll. 



Halictus callaspis, sp. n. 



$ . — Length about 6"5 mm. 



Headend thorax with loose white hair, abundant at sides 

 of thorax ; head broad, clypeus prominent, its basal margin 

 little above level of lower ends of eyes ; head olive-green, 

 tinged with brassy about bases of antennae and on snpra- 

 clypeal area ; clypeus shiniug peacock-green, its upper 

 margin very narrowly purple ; antennae black, flagellum 

 obscurely reddish beneath toward apex ; mesothorax yel- 

 lowish green, much brighter than head, granular but some- 

 what glistening, not distinctly punctured ; scutellu'm more 

 shining, peacock-green; rest of thorax rather obscure olive- 

 green ; area of metathorax very finely irregularly lineolate ; 

 posterior truncation not sharply defined ; tegulae reddish. 

 Wings hyaline, stigma amber-colour; outer r. n. and t.-c. 

 almost obsolete ; first r. n. meeting second t.-c. Femora 

 dark olive-green ; knees more or less reddish ; tibiae and 

 basitarsi piceous, with much white hair ; small joints of tarsi 

 dull ferruginous. Abdomen shining olive-green, without 



