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II. New Species of Hvmenoptera in the British Museum. 

 By EowLAND E. Turner, F.Z.S., F.E.S. 



[Read December 6th, 1916.] 



Family BETHYLIDAE. 



Genus Dicrogenium, Stadelm. 



Dicrogenium, Stadelm., Entom. Nachricht, xx, p. 201, 



1894. 

 Nomineia, Kieff., Ann. Soc. Ent. France, Ixxx, p. 453, 



1911. 



I consider that these are identical, and that Ashmead's 

 action in transferring the genus from the BetJiylidae to 

 his Cosilidae was entirely unjustifiable. 



Dicrogenium maximum, sp. n. 



Q. Niger; mandibulis apice fusco-ferrugineis ; alis fuscis, apice; 

 fusco-hyalinis. 



Long. 18 mm. 



o- Mandibles strongly bidentate at the apex, the outer tooth the 

 longest; clypeus short, transverse, with a strong median carina. 

 Flagellum punctured, hairy, becoming slender towards the apex, 

 scape smooth and shining, the antennae as long as the thorax 

 and median segment combined. Head very large, broader than 

 the thorax, broadly emarginate posteriorly, closely and coarsely 

 punctured-reticulate ; eyes very near to the base of the mandibles, 

 separated from the posterior margin of the head by a distance 

 exceeding their own breadth; the cheeks broader than the eyes, 

 sparsely but deeply punctured, bearing a stout, acute, sjiine. Prono- 

 tum short, strongly narrowed anteriorly, the anterior margin raised, 

 a deep groove along the ^^osterior margin. Mesonotum coarsely 

 punctured, more sparsely on the middle than on the sides, the 

 parapsidal furrows shallow ; scutellum very sparsely punctured ; 

 mesopleurae closely and coarsely punctured, with a shining, almost 

 smooth, area behind the wings. Median segment irregularly 

 rugulose, with two longitudinal carinae close together, the narrow 

 space between the carinae transversely striated, the sides of the 

 segment strongly horizontally striated, the apical slope more finely 



TRANS. ENT. SOC. LOND. 1917. — PART I. (NOV.) 



