264 MEMOIRS OF THE QUEEXSLAND MUSEUM. 



Halictus mesocyaneus n. sp. 



Female. Length about 5 mm., head and thorax black except the mesothorax^ 

 which is deep blue, somewhat shining, but not polished ; legs black (anterior knees 

 not red) ; abdomen dark brown, suffused with dark-reddish, the hind margins of 

 the segments paler ; venter with long curled hair. Mandibles reddened apically ; 

 flagellum obscurely brownish beneath ; greater part of front somewhat shining ; 

 scutellum shining ; area of metathorax with delicate radiating striae, and a shining 

 rim ; tegulte reddish testaceous : wings yellowish hyaUne, stigma large, pale-reddish : 

 abdomen broad, shining. The area of metathorax is microscopically sculptured 

 between the raised lines or plicae. The mesothorax is microscopically tessellate, 

 with widely scattered extremely weak punctures. 



Bribie Island, 1-4-18 {Hacker). .Smaller than H. inclinans Smith, and easilj^ 

 separated by the polished abdomen and black scutellum. 



Halictus bicingulatus Smith. 



Mr. Hacker has collected this as follows :— Males. Bribie I.. 2-11-13, 2-11-15 ; 

 females, Brisbane. 18-9-14. Sunnybank. Brisbane, at flowers of Leptospermum, 9-9-12 ;. 

 Kelvin Grove, 14-9-12, entering a hole in a clay bank. 



Noiuia moerens Smith. 

 National Park, Q., Dec, 1919 {Hacker). 



Anthophora lilacina Cockerell. 



Misprinted " lilacine " in Mem. Qu. Mus., VII, p. 84, but given correctly iiL 

 Hacker's Catalogue. 



GNATHOPROSOPIS Perkins. 

 Gnathoprosopis amiculiformis (Cockerell). 



Prosopis amiculiformis must go in Gnathopjrosopis. A female was taken at 

 Brisbane, 17-10-16 {Hacker). 



Gnathoprosopis bituberculata (Smith). 

 Males were collected by F. M. Littler in Tasmania ; at Launceston, 7-11-15;, 

 and St. Helens, 14-1-16. The species 'is new to Tasmania. 



Gnathoprosopis amicula (Smith). 

 Females, National Park, Q., Dec, 1919 {Hacker) ; a form with rather dusky- 

 wings. The chrome-yellow face-marks and much narrower clypeus readily distinguish 

 this from G. hackeri. 



