A. TULLGREN, HYMENOPTERA ACULEATA FROM THE CAMEROONS. 453 



The wings hyaline, a little infuscate at the apex and 

 along the costa. 



Length 13,5 mm. 

 Exp. 22 mm. 



Belenogaster Sauss. 



Saussure, Etudes sur les Vespides II, 1853. 

 Kohl, Zur Hymenopterenfauna Afrikas in Ann. des k. k. 

 naturhist. Hofmus. Wien. Bd 9, h. 3, 1894. 



B. junceus Fabr. 



Sauss. 1. c. p. 14. 



To this species I eount two females from N'dian ( 14 /g 

 1891). Of these one is captured as perfectly developed imago 

 in a nest also containing larval and pupal stages. They are 

 in all parts blackish brown with a very short yellowish 

 brown pubescence. The wings are dark brown especially at 

 the anterior margin, in certain lights with a violet effulgence. 

 The longest interval between the eyes on the vertex as long 

 as the joints 2 + 3 of the flagellum. The second joint of the 

 nagelluin as long as the joints 3 + 4 + ty* 5 of that and the 

 joints 3 and 4 are longer than broad. The cheeks are a 

 little longer than the third joint of the nagelluin. 



The clypeus is onecoloured chestnut-brown, oval and at 

 the inferior margin acutely produced. 



TKe third cubital cell is rhomboid about as high as broad 

 and the second one is nearly triangulär. 



Length 28,5 mm. 



Exp. 43 mm. 



The nests of the species of the genus Belenogaster are 

 nearly unknown. The only record I have found in the lite- 

 rature is in Saussure, Vespidre in Wissenschaftl. Ergebnisse 

 der Reisen in Madagaskar und Ost-Afrika von Voeltskow 

 Bd II (Abh. Senkenb. naturf. Ges. Bd 26, h. 2, 1900, p. 206). 

 In this work Mr. Saussure describes two undetermined nests 

 from Madagascar. Mr. Sjöstedt has brought home two nests 

 belonging to Belenogaster junceus Eabr. and these nests differ 

 a little from the description published by Mr. Saussure. The 



