HYMEN OPT EROUS PARASITES OF RHYNCHOTA. 219 



24. Athysanus sordidus, Zett. 

 Mr. E. A. Butler kindly informs me that he possesses speci- 

 mens of this species containing larvae of Gonatopus. 



25. Athysanus plebeja, Fall. 

 His Chalcid, Eupelmus cicada, is said by Giraud (Ann. Soc. 

 France, 1871, p. 413) to be parasitic within the eggs cf Cicada 

 plebeja. Cf. also Beamur, Mem. Hist. Nat. Ins. v. 4. 



26. Thamnotettix maritimns, Perr.* 

 M. Perris gives an interesting account of the ektoparasitism 

 of the above species upon this Jassid in his " Nouvelles Excur- 

 sions dans les Grandes Landes " (Ann. Soc. Linn. Lyon, 1857, 

 p. 172). 



27. Thamnotettix quadrinotatns, Fabr. 

 Mr. Butler informs me that he possesses this species, para- 

 sitized by larvae of Gonatopus. 



28. Deltocephalus assimilis, Fall. (=xanthoneums, Fieb.).* 

 A long account is given of the habits of Gonatopus pilosus. 

 Thorns., from larva to imago, by J. Mik (Wien. Ent. Zeit. 1882, 

 pp. 215-221) ; especially interesting is the observation that the 

 hybernated larva strengthened its cocoon immediately before 

 assuming the pupal state in the middle of May, showing a very 

 late active period. 



29. Deltocephalus maculiceps, Boh. 

 Specimens of this species in Mr. Butler's collection bear 

 larvae of Gonatopus. 



30. Eupteryx vittata, Linn. 

 I swept a specimen of this species from reeds on the bank of 

 the Orwell near Ipswich on Sept. 15th, 1904, which contained a 

 larval parasite, probably Hymenopterous. 



31. Cicadula septemnotata y Fall. 32. C. sexnotata, Fall. 

 Both these species have been noted by Mr. Butler to bear 

 larvae of the Proctotrypid genus Gonatopus. 



lanio, and Mimesa (Psen) unicolor with various "Cicadelles" (Gaulle, Cat. 

 130) ; while M. bicolor attacks a species of Tettigonia (Smith, Cat. Brit. 

 Hym. 181, et Shuck. Trans. Ent. Soc. 1836, p. 57), probably T. viridis, 

 Linn, 



