144 



Alae aeneo-hyalinae nervis piceis, cellula cubitalis 2 trapezina, in nervo cubitali longior; nervus recurrens i 

 incidens. Clypeus ultra oculorum apicem totus prolatus. Antennarum articuli intermedii latitudine sua plus quam 

 sesquilongiores. Mesonotum et scutellum confertissime punctulata. Segment! medialis area dorsalis sat scabra, 

 analis lateribus tantum infra convergentibus marginata. L. 7 mm. 



Est-ce le S de H. diversus Sm.? 



2 d de Lastourville VIII.— IX. 1898 (BoUYSSOu), coU. Vachal. 



Kongo. 



Halictus robertianus Cam. 

 1905 Halictus robertianus Cameuon, S, in: Tr. S.-Afr. Phil. Soc, Vol. XV, p. 236. 



(?. Black; densely covered with white pubescense, the apex of the clypeus (the yellow in the centre 

 triangularly projecting into the black upper part), the lower part of the antennal scape, the apex of the femora 

 (the anterior more broadly than the others), the tibiae and tarsi, pale yellow, the tibiae on the outer side marked 

 broadly with fuscous; the wings clear hyaline, the nervures and stigma pale testaceous; metanotal area closely, 

 irregularly, longitudinally striated, the Striae twisted and intermixed with some thinner transverse ones. L. 5 mm. 



Face and upper part of clypeus closely, minutely, distinctly punctured; the yellow apex of the clypeus 

 smooth ; front and Vertex less distinctly punctured. Basal two-thirds of mandibles pale yellow, the apex piceous. 

 Thorax closely, uniformly, minutely punctured; there is a smooth, narrow, impressed line on the basal half of 

 the mesonotum in the centre. Tegulae testaceous. Second and third cubital cellules in front almost equal in length. 



AlHed to H. albidus Lep. 



Kapland — Pearston. 



Halictus rubricaudis Cam. 

 1905 Halictus rubricaudis Cameron, $, in: Tr. S.-Afr. Phil. Soc, Vol. XV, p. 236. 



$. Black, the apical half of the last abdominal segment and the rima rufous; the head, thorax, and 

 ventral surface of abdomen densely covered with long cinereous pubescence; the base and apex of the second 

 to fourth dorsal abdominal segments with a band of cinereous pile; the wings clear hyaline, the stigma and 

 nervures dark testaceous; the tarsi ferruginous below, cinereous above; the knees and apex of tibiae rufo-piceous; 

 metanotal area rugosely punctured in the centre, the sides closely, finely reticulated. L. nearly 8 mm. 



Face projecting roundly in the centre, finely and closely punctured ; the clypeus shining, sparsely punctiured 

 on the basal two-thirds. Front and vertex opaque, alutaceous. Mandibles broadly rufous in the middle; they 

 are, as is also the labrum, fringed with long, golden hair, the hair on the hinder edge of the vertex being also 

 tinged with golden. The flagellum of antennae dark rufous, black above. Mesonotum closely, uniformly, and 

 somewhat strongly punctured, the scuteUum as strongly, but not so closely punctured. The apex of the meta- 

 notum has a steep slope; its centre above is depressed sUghtly, the sides broadly rounded on either side of the 

 central depression, the edges being smooth and shining. Pleurae closely, finely rugose. Abdomen at the base 

 closely and distinctly punctured, the third and following segments only indistinctly punctiu-ed; they are not 

 depressed; the anal rima is large and conspicuous; the epipygium has a large tuft of rufous hair on the apex. 

 Tegxdae piceous. 



Kapland — Pearston. 



Halictus rufiventris n. sp. ?. 



Wie H. rufomarginatus (nach der Beschreibung), aber mit ganz rotem Abdomen. 



?. Schwarz, kaum weißlich behaart, Kopf und Thorax fein runzlig punktiert, matt, Clypeus spärlich 

 aber undeutlich punktiert, glänzend, etwas verlängert, gerade abgestutzt, Antenne schwarzbraun, unten braun. 



