357 



ON THE HYMElNOPTERA FROM BELGIAN CONGO 

 IN THE CONGO MUSEUM, TERVUEREN 



by P. C a ni • r o n 



D r H. Schouteden having sent me for examinatioti the Parasitic 

 Hymenoptera and the Phytophaga from the région of the Congo in 

 the Congo-Muséum, Tervueren, I give hère a Catalogue of ail the 

 species sent to me, with descriptions of those which appear to he 

 undescribed. Our knowledge of the Hymenoptera of vvest Tropical 

 Africa, as a whole, is notât ail so extensive as it is of East Tropical 

 or of South Africa. 



PHYTOPHAGA 



ORYSSINI 



Chalinus purpureiventris sp. n. — Green, the front dark 

 purple, the 2 na and following segments of the abdomen bright 

 purple, the purple on the middle segments running into blue, the 

 keel between the antennee dark purple, almost black, inaudibles 

 black, shilling; antennae black, the scape dark purple in the 

 middle; the flagellum shilling, biack, slightly tinged with purple, 

 the lower side densely fringed with long white hair; legs dark 

 green, the anterior tibiëe and tarsi dark testaceous, the 4 hinder 

 tibias and tarsi darker coloured than the femora; wings fuscous- 

 violaceous, the stigma and nervures black; the apices of both wings 

 hâve a narrow, almost hyaline border cf. 



Length 11 mill. 



Dima, 22 nd September (A. Koller). 



Antennal scape broad, about twice longer than wide, roundly 

 curved inwardly, the upper, inner part strongly,. sparsely punctu- 

 red; the 2 nd joint about as long as it is wide at the apex; on the 

 outer side it becomes gradually widened from the base to the apex. 

 Head strongly, irregularly punctured, the cheeks more closely 

 than the front and thickly covered with long white hair; on the 

 vertex is a raised smooth, roundly curved, black keel; below its 

 outer edge, on the sides, in a row, are 3 stout tubercles, bluntly 

 triangular, the upper two nearer to each other than they are to 

 the lower; between, and below the antennee, is a roundly curved 

 keel, its apex in the middle projecting into a minute tooth ; on the 

 lower half of the front are 2 fine keels which converge und unité 



