184 THE ENTOMOLOGIST. 



etc., by Haliday and Walker. My dates are May 27th to- 

 October 27th, excepting July, by general sweeping and on reeds, 

 on leaves of oak and lime, and house windows ; at Foxhall, 

 Hulver, Ipswich, Monks Soham, Wherstead, Bramford, Wang- 

 ford, Covehithe, South Cove and Soutbwold in Suffolk. New 

 Forest in May and September (Lyle) ; Lambley, Southwell and 

 Nuttall in Notts (Carr) ; Oxshott (Newbery), Eeigate (Saunders) 

 and Kew (Sich) in Surrey. That it more likely preys upon 

 some subterranean beetle than upon the above gnats is evidenced 

 by KeyB, who bred it at Plymouth in Devon on May 10th, 1909, 

 from a mole's nest. 



8. EXALLONYX LAEVIVENTRIS, Kief. 



Exallonyx leviventris, Andre, Spp. Hym. Europ., x, p. 330, 



England (P. Cameron) ; Austria (Trieste), Kieffer, I.e. I 

 have seen no specimen of this subfamily with smooth second 

 segmental base, though my search has been comprehensive. 



9. Exallonyx Wasmanni, Kief. 

 Exallonyx Wasmanni, Andre, Spp. Hym. Europ., x, p. 328, 



The type form was taken with Myrmica ruginodis in Germany, 

 and has not hitherto been known in Britain. The var. socialis, 

 Kieff. {I.e.), differs in having the legs flavescent, and the radial 

 cell one-third shorter than the stigma. This variety was dis- 

 covered near London with the ant, Lasius fuliginosus, by Donis- 

 thorpe during September. The typical form is, however, found 

 with us, for Chitty captured a male in the Faversham district of 

 Kent on May 19th, 1906 ; but I have no doubt that it is rare, 

 and probably confined to chalky places, since two females alone 

 have fallen to my net, one during the following August at King- 

 stead Downs in West Norfolk, and the other on August 14th, 

 1908, as it was flying about the face of the sandy Corton cliff at 

 Lowestoft on the Suffolk coast. 



PABACODRUS, Kieff er. 



Andre, Spp. Hym. Europ., x, 1907, p. 273. 



This genus has usually been regarded as distinct from the 

 broad genus Proctotrypes under the name Codrus, Jurine, which 

 was restricted to it by Thomson in 1857 ; but, since it is really 

 synonymous, the erection of Paracodrus must be accepted. The 

 only other species of this genus, P. albipennis, Thorns., has been 

 erroneously synonymised with the first, not known as British. 



