PyracmoTi] 



BRITISH ICHNEUMONS. 



123 



Thorns.) in grass}- places infrequently throughout Sweden, and Dahlbom 

 found the female; Sclini. adds that it ranges to central Euroi)e, and 

 Gaulle records it from France ; but Tosquinet failed to find the genus in 

 Belgium. This species has not been noticed in Britain before; I possess 

 three females, of which a typical one (though having one wing utterly 

 without areolet) was bred by Thornhill on gth July from — ? Sesia 

 hanhtcifoimis in — osiers at Cambridge and two more with basalh" whitish 



hind tibiae were captured, one on 14th June, 1907, at the Wilvi'rlv Inclosure 

 and one a few days later at Holiday Hill in the New Forest. Mr. C. W. 

 Williams of The John Innes Horticultural Institution, Merton, Surrey, 

 has confirmed the introduction of this as a British insect (Entom. 19 13, 

 p. 8) by breeding an entirely typical female there during 1912 from a 

 larva of the neuropterous genus Raphidia ; the parasitic grub emerged 

 from a circular hole on one side of the anus of its host's empty larval 

 skin and spun for itself a cylindrical, i)ure white and somewhat dull 

 cocoon of bimm., whence the imago emerged through an equallv circular 

 hole on one side of its capital extremity. 



1 took tlio female here figured in my Monks Soham garden on zaiid July, 

 190.S, wliicli siciiis 111 icprc^ciil this species, flying about a dead wilk)W 

 tree. 



