47 Die Bienen Afrikas nach dem Stande unserer heutigen Kenntnisse. j2q 



Halictus atncrus Vach. 

 1903 Halictus atricrus Vachal, $cf, in: Ann. Soc. ent. France, T. LXXir, p. 391. 



$cJ. H. capnopodi similis, differt: statura paulo majore, tibiis omnino atris; ? prototarsis nigris, calcar 

 bidentatum, dente basali magno; d mandibulis nigris, segmentis ventxalibus haud dense fasciatis, prototarsis vix 

 basi rufescentibus. L. 6 — 7 mm. 



5 ? et 6 d de N'Kogo et N'Djole (BoUYSSOu), Museum Paris. 



Kongo. 



Halictus atroviridis Cam. 

 1906 Halictus atroviridis Cameron, 9, in: Tr. S.-Afr. Phil. Soc, Vol. XVI, p. 325. 



?. Dark green, the apices of the apical three abdominal segments broadly ruf o-testaceous ; the four 

 anterior tibiae and tarsi, the base and apex of the hind tibiae and the hind tarsi, except the middle of the meta- 

 tarsus, rufo-testaceous, the rest of the legs black and covered with white pubescence; wings hyaline, the Costa 

 and Stigma testaceous, the nervures black. L. 3 — 5 mm. 



Flagellum of antennae rufo-fulvous, blackish above, apical half of clypeus bronzy coloured. Mandibles 

 testaceous, black at the apex; the front is brassy tinted; the punctuation on the front and vertex is fine and 

 close. Metanotal area closely punctured at the apex, the base more strongly reticulated, its apex bordered by 

 a broad, smooth and shining band. Abdomen closely, finely punctured; the apical segments (perhaps also the 

 basal) with bands of white pubescence on their apices; the apical segment is entirely rufo-fulvous; the middle 

 area of a dark er rufous colour. The second cubital cellule is of equal width throughout; the third abscissa of 

 the radius is about one-fourth longer than the second. 



The green colour is not so conspicuous as it is in the common H. jucundus Sm., which is a much larger, 

 much more densely haired species, and its apical segments of the abdomen are not rufo-fulvous. In the larger 

 examples of atroviridis the metanotal area is more distincüy reticulated-striated than it is in the smaller; in fresh 

 examples the rufous colour on the apices of the abdominal segments is hid by depressed white pubescence; the 

 basal abdominal segment may be largely tinted with violaceous; the mandibles may be black. 



Kapland bei Pearston. 



Halictus aurifrons Sm. 



1853 Halictus aurifrons Smith, c^, in: Cat. Hym. Br. Mus., Vol. I, p. 55. 



J. Black, face covered with a golden pubescence, flagellum fulvous beneath, mandibles ferruginous at 

 their apex, clypeus not produced. Thorax, above a thinly scattered golden-coloured pubescence, postscutellum 

 and sides of the metathorax covered with white pubescence; beneath, the pubescence is pale yellow; wings 

 hyaline, iridescent, tegulae and nervures pale testaceous; legs rufo-piceous, tarsi and knees pale ferruginous. 

 Abdomen ovate, nigro-piceous, on the apical margins of the three basal segments laterally an angular patch of 

 white pubescence. L. 2^/., lines (= 5^2 mm). 



Sierra Leone. 



Halictus australis Vach. 

 1903 Halictus australis Vachal, ?, in: Ann. Soc. ent. France, T. LXXII, p. 391. 



9. H. capnopodi similis ; differt : tibiis et prototarsis nigris, angulis posticis areae dorsalis segmenti medialis 

 lateribus haud linea elevata limitatis et margine arae analis obsoletiore (an var. ?). 



2 cJ de l'Afrique australe (de S6lys), Museum Bruxelles. 



Südafrika. 



