IMr. E. E. Turner on Fosaorud Ilymenoptera. 289 



cul)ital cell tliaii in natalensis. Cubitus of the hind wing 

 origiuatiug before the transverse median nervure. 



Ilab. Nvasalaud, S.W. of Lake Chilwa; January 16, 

 1914 (S. A. Neave). 



This belongs to the group of wa^a/ewm, Sm._, and effugiens, 

 Brauus, but differs much in colour. The mesonotum is 

 marked in front by four shallow grooves instead of low 

 caiinte as in tiie two species referred to. 



Arpactus fugax, sp. n. 



5 . Brunneo-ferrugiiiea ; fronte, vertice, mesonoto fascia longitudi- 

 nali, scutello basi,postscutello basi, segmento mediano area basali, 

 niesosternoqiie nigris ; prouoto, scutello postscutelloque fascia 

 apicali, segmento dorsali secundo fascia lata apicali, quarto fascia 

 apicali, quintoqiie omnino flavis ; alis hyalinis, venis fuscis, stig- 

 mate testaceo, area radiali valde infuscata. 



Long. 13 mm. 



? . Eyes slightly, but not strongly, converging towards 

 the clypeus ; second and third joints of the flagellum about 

 equal, longer than the scape; front marked with a distinct 

 longitudinal groove. Mesonotum marked anteriorly Avith 

 four short and distinct grooves ; the transverse, crenulate, 

 groove at the base of the scutellum very strongly marked ; 

 the marginal and median grooves of the minutely punctured 

 and pubescent basal area of the median segment marked 

 with distinct striae. The whole insect very minutely punc- 

 tured and clothed with very fine pubescence, more sparsely 

 punctured on the head. First abdominal segment slender, 

 gradually widened from the base ; pygidial area shining, 

 Avitli a few scattered punctures, triangular, the sides longer 

 than the base. Second abscissa of the radius as long as the 

 first. 



Hab. Makindu, British East Afiica; December 16, 1911 

 [S. L. Hinde). 



This belongs to the natalensis group, and seems to be very 

 near effuyiens, Brauus, but has shallow grooves on the meso- 

 notum, instead of low carinae, no yellow band on the third 

 dorsal segment, and the eyes can hardly be described as 

 " stark konvergent.^' In other points the description of 

 effui/iens agrees fairly well with fur/ax. 



The African species of the natalensis group (of which 

 Handlirsch gives kohlii as the type) may be separated as 

 follows : — 



1. Secoud dorsal segment ahuost entirely yellow, 

 at most with a triangular black mark on the 

 middle of the apical margin A. natalensis, Sm. 



