384 ^Ir. T. D. A. Cockerell — DescrijHions and 



Pachyprosopis nitidiceps, sp. n. 



$ . — Length about 4^ mm. 



Black, not more robust than Euryglossa ; head nearly 

 round seen from in front, not especially l^i'ge, brilliantly 

 shiuing, with scattered punctures ; ocelli small ; front with 

 a median groove; mandibles dark, obscurely reddish sub- 

 apically; eyes converging below; scape black; flagellum 

 short and thick, ferruginous beneath ; mesothorax dullish, 

 with inconspicuous scattered punctures; scutellum rather 

 more shining, having a sort of glaucous tint ; area of nieta- 

 thorax not distinctly defined. Legs black, with the tarsi 

 reddish, the anterior tibiae ferruginous, suffused with blackish 

 behind, and the middle tibiae ferruginous in front, the hind 

 knees also ferruginous ; tegulie rufo-testaceous. Wings 

 hyaline, faintly dusky, the large stigma and the nervures 

 ferruginous; b. n. strongly arched, not reaching t.-m. ; first 

 r. n. meeting first t.-c. ; second s.m. narrow and pointed 

 above, yet broader (longer) than in some species, its lower 

 side being about equal to that on first t.-c. ; abdomeu broad, 

 shining, the hind margins of the segments brownish. The 

 comjjound microscope brings out the following details : — - 

 Abdominal segments finely transversely lineolate; base of 

 meta thorax with a very irregular and delicate raised reticu- 

 lation ; scutellum closely punctured posteriorly; hind spur 

 with very strong teeth; mesothorax very minutely trans- 

 versely lineolate. 



Hub. Mackay, Queensland, November 1893 (Turner). 

 British LIusenm. 



Readily known by the small size and black colour ; P.flovi- 

 cauda, Ckll., which it most resembles, has the end of the 

 abdomeu orange. 



Halictus punctatus, Smith. 



In Smith's description read " mesothorax (not metathorax) 

 green.'"' The metathorax is black, with Hue raised lines. 

 The abdomen varies to nearly all red except the base. The 

 specimens before me are labelled as follows : — Svdnev, 

 N.S.W., Nov. 29, 1910 {Frogyatt, 124) ; Kuthergleu, Vic- 

 toria, 1909 (French; Froggatt collection, 88); Melbourne, 

 A ictoria, Aug. 1900 {French ; Turner collection). 



Halictus dotatus, sp. n. 



$ . — Length about 5^ mm. 



Head and thorax green, abdomen and legs bright ferru- 

 giuous; head ordinary, metallic green, not very briulit; 



