jt 2 H. Friese, 50 



Halictus chalybaeus Friese. 

 1908 Halictus chalybaeus Priese, $, in: Sjöstedt, Kilimandjaro-Exp., Bd. VIII, p. 123. 



$. Ueberall stahlblau, sparsam weißlich behaart, Kopf groß, dick, von Thoraxbreite, äußerst fein 

 skulpturiert, innere Orbitae parallel; Wangen fehlen, Mandibelende rotbraun, Labrum und Antenne schwarz; 

 Mesonotum fast glatt, glänzend, sonst Thorax fein skulpturiert und matt, auch Area. Abdomen fein punktiert, 

 Segmente 3tnal so breit wie lang, Segment 6 und Analfurche rotgelb behaart. Bauch schwarz, mit gelblichen 

 Segmenträndern. Beine schwarz, Tarsen braun, Klauen rotgelb, Scopa dünn, weißlich, Flügel hyalin, Adern 

 gelblich, Tegulae braun. L. 7 mm, Br. 1 3 / 4 mm. 



1 ? von Kibonoto am 29. Juni, 1300 — 1900 m. 



Kilimandjaro, Deutsch-Ostafrika. 



Halictus clavatus Sm. 



1853 Halictus clavatus Smith, $, in: Cat. Hym. Br. Mus., Vol. I, p. 55. 



ö\ Head and thorax black, closely and finely punctured, antennae fulvous beneath, face covered with 

 a silvery white pubescence. Thorax; the wings hyaline, their apex having a fuscous cloud, the tegulae and 

 nervures rufo-piceous ; the legs rufo-piceous, tarsi and anterior tibiae paler. Abdomen nigro-piceous, clavate, 

 basal segment subpetiolate. L. 2 3 / 4 lines (= 5 mm). 



Sierra Leone. 



Halictus collegus Cam. 

 1905 Halictus collegus Cameeon, $, in: B.ec. Albany Mus., Vol. I, p. 189. 



ö". Black, apex of the clypeus pale lemon-yellow ; underside of the flagellum, tarsi for the greater part 

 testaceous, wings hyaline, nervures and stigma fuscous, cubital cellula 2. hardly \ the length of the 3., recurrent 

 nervure 1 interstitial, tegulae yellowish - testaceous on the outer, black on the inner half, base of metanotum 

 irregularly longitudinally striated. L. 6 mm. 



Lower part of front, face and clypeus thickly covered with white pubescence, the hair on the thorax 

 white; head, pro-, mesonotum and scutellum closely, finely, distinctly punctured; Upper part of the mesopleurae 

 closely punctured, hind part longitudinally striated, Striae distinct and clearly separated. Apex of metanotum 

 smooth, shining, bare ; it is bordered by a stout keel. Abdomen smooth, shining, apices of the segments piceous. 



Transverse cubital nervures 1. — 2. are straight, slightly oblique, 3. oblique in front, broadly rounded 

 below; face not elongated; apical half of mandibles rufous. 



Kapland — Museum grounds, Grahamstown im November. 



Halictus creightoni Cockll. 

 1908 Halictus creightoni Cockerell, $, in: Entomologist, p. 122. 



$. Black, with dull white hair; abdomen black, with the hind margins of the segments concolorous; 

 bases of segments 2 to 4 with bands of dense pure white tomentum, these all broad laterally, but narrowing 

 medially, and failing dorsally on 2 and 3; tegulae shining black; wings strongly dusky, nervures and stigma 

 black; legs black, except claw-joints, which are reddish; hair of legs white, faintly yellowish on inner side of 

 tarsi, brush at end of hind basitarsus dark f usco-f erruginous ; spurs ferruginous; hind spur long, its apical half 

 simple, the basal half with a row of minute nodules; apical region of abdomen with scattered coarse black 



