372 PROCEEDINGS OF THE ACADEMY OF [May, 



second s. m. a little before end; outer r. n. and t. c. very weak; third 

 s. m. very short; abdomen polished, shining, venter with a scopa of 

 long curled hairs. Microscopical characters: front densely covered 

 with elongated punctures running into striae; surface of mesothorax 

 very delicately reticulated; area of metathorax minutely reticulated 

 between the ridges ; hind spur with four obtuse spines. 



Hob. — Launceston, Tasmania, Nov. 1, 1914, 2 9 (F. M. Littler, 

 2,699). Related to H. hwnilis Sm., but distinguished by the dark 

 legs and striate area of metathorax. 



Halictus forticornis sp. n. 



cf . Length about 4 mm.; black, with very scanty pale pubes- 

 cence, no bands or patches on abdomen; head broad, eyes converging 

 below; mandibles pale yellow, ferruginous at apex; lower half of 

 clypeus pale yellow; middle of face shining, front dull; cheeks 

 unarmed; scape black; flagellum very long, thick, submoniliform, 

 light orange-ferruginous beneath ; mesothorax and scutellum shining, 

 smooth and polished; area of metathorax roughened basally, but 

 with a broad shining rim; legs black, with knees, apices of tibiae, 

 and anterior tibiae in front, ferruginous; tarsi very pale reddish 

 approaching cream-color; tegulae dark ferruginous; wings hyaline, 

 nervures and the large stigma testaceous; first r. n. joining apical 

 corner of second s. m. ; outer r. n. and t. c. extremely weak; abdomen 

 short, shining; sides of venter testaceous. Microscopical characters: 

 front striate; mesothorax with sparse minute punctures, the surface 

 of the disc not lineolate or reticulate; first two abdominal segments 

 distinctly but minutely punctured, the depressed apical part of 

 second transversely lineolate. 



Hob.— Kalamunda, S. W. Australia, Feb. 9-28, 1914 (R. E. Turner; 

 Brit. Museum). Very close to H. cyclognathus Ckll., but head 

 smaller, antennae longer, and area of metathorax different. 



Halictus imitans Ckll. 



George Town, Tasmania, Nov. 15, 1914 (Littler). New to Tas- 

 mania. On Nov. 29 Mr. Littler took H. lanarius Sm. at George 

 Town. 



Halictus seductus Ckll. 



Bridport, Tasmania, Oct. 26-30, 1913 (Littler). New to Tasmania. 



Halictus semipolitus expulsus subsp. d. 



9 . Flagellum black (red at end in typical semipolitus) ; tegulse 

 piceous or more or less reddish. 



