128 THE ENTOMOLOGIST. 



Leeds, with those of Exetastes cinctipes and E. illusor ; he said 

 that in all probability they had emanated from Mamestra 

 brassicce or Iladena oleracea. Of the thirteen I can only find 

 that six (all males) emerged between May 28th, 1900, when one 

 was out at 10 a.m. since midnight, and June 18th, 1900, when 

 three had emerged since 6th. The last emerged between 2 p.m. 

 on June 3rd and 11 p.m. the preceding night. On October 31st, 



1900, he sent me twenty more cocoons similarly obtained, and 

 from these but five imagines emerged ; both sexes on May 26th, 



1901, between midnight and 11 a.m., a male on 29th, and both 

 sexes on June 2nd between midnight and 10 a.m. Clutten has 

 bred it at Burnley ; Blair as early as May 10th ; and Bignell in 

 Devon from Hadena suasa. On May 13th, 1904, Blair bred a 

 single female from a " whole batch" of New Forest Tceniocampa 

 miniosa, among a number of Meniscus murinus {cf. my ' Ichneu- 

 mons of Britain,' vol. iii.). He particularly informs me that the 

 cocoon is spun underground. Marshall could cite no specified 

 hosts. 



2. caligatus. — This appears to me to differ from M. deceptor 

 only in the faintly defined dividing nervure. It is restricted to 

 Britain. I have only three males, taken by Miss Chawner in 

 the New Forest ; Dr. Capron about Shere, in Surrey ; and myself 

 by beating Prunus spinosa at Barham Green (William Kirby's 

 parish) on May 27th, 1899. 



3. chrysophthalmus. — Both sexes bred on May 20th, 1903, 

 from Nephopteryx hostilis, taken in South Essex during the pre- 

 ceding autumn (Thurnall) ; one female bred from Phlyetenodes 

 turhidalis at La Granja, in Spain (Chapman). In the latter 

 case the parasite had emerged from the larva after the latter had 

 constructed its cocoon and spun its own within that of the host ; 

 the former is pure white, dull, subcylindrical, and not very 

 rough ; from it the imago emerged at the smaller apex, which 

 was entirely cut round, but held i7i situ by the wool. Unlike the 

 foregoing species, this is abroad in the autumn as well as the 

 spring, since I swept a female at Freston, in Suffolk, on Septem- 

 ber 7th, 1896. It has also occurred to me at Bentley and 

 Brandon in the same county in late May and early June, to 

 Miss Chawner in the New Forest, and to Charbonnier at Bristol 

 in July. 



4. deceptor. — A common species, whose larva spins its cocoon 

 within that of its host ; the former is pure white and similar in 

 consistency to that of the last species, but a great deal more 

 attenuate at one end. Tonge, however, tells me that he found a 

 cocoon free on Scotch fir in a Reigate garden in October, from 

 which this species emerged on 5th of the following July. It has 

 also been bred by Porritt in Yorkshire, and Clutten at Burnley ; 

 Felden, in Herts (Piffard) ; Tuddenham Fen, in Suffolk (E. G. J. 

 Sparke) ; New Forest, at the end of May (Adams) ; and Guestling 



