454 ARKIV FÖR ZOOLOGI. BAND 1. 



nests were found hanging at the roof in an abrupt ed hollow 

 stem. The stalk of the nest is longer than the longest cells 

 about 5 cm. in length. At the basal end it is narrow and at 

 the other end divided into two branches, that are fixed to one 

 margin of the nest. The bottom of the nest is concave but 

 not so much, that the bottom seems to be helm-shaped. The 

 developed cells are about 26 mm. in length. The total length 

 is nearly 75 mm. and the breadth nearly 25 mm. 



Geographical Distribution. — Afr.: Congo, Senegal, Abys- 

 siuia, Mossanibique. 



B. pictus Kohl. 



Kohl 1. c. p. 324. 



To this species 1 count 6 females collected at Bibundi 

 ( 18 /i2 1890) and Itoki ( 20 /2 1891). To this species I must also 

 ref er a male from Bonge ( 15 /io 1891). This male differs by. 

 wanting yellowish transversal spöts on the fourth and fifth 

 abdominal segment, the abdomen is black and not cinereous 

 hairy, a characteristic that is distinctive of another female, 

 which only by this differs from the principal form. 



Length (f 25 mm.; $ 24 — 29 mm. 



Exp. rf 42 mm.; $ 45,5 — 50 mm. 



Geographical Distribution. — West-Africa: Cap— Sierra Leone. 

 Before found in the Cameroons. 



B. turbulentus Kohl. 

 Kohl 1. c. p. 330. 

 Two females from Itoki ( 3 /i, V" 1891. 



Geographical Distribution. — West-Africa: Sierra Leone. 



B. pusillus Kohl. 



Kohl 1. c. p. 325. 



To this species I count a single female. In some parts 

 it differs from the description of this species. 



Head, thorax and petiole are light brown, the short pe- 

 tiole of the third abdominal segment is light brown, but the 

 other parts of the abdomen are black. The dorsal part of 

 the third segment with two transverse light yellow spöts 



