16 BRITISH GALL-INSECTS. 



Lasioptera, Meigen. 



67. rubi, Schranck. 

 On Ruhus ccBsius. 



I may here notice two more species of Cecidomyidw, 

 which I have bred from their galls, but which I cannot refer 

 to any described species. I therefore have called them 

 provisionally — 



68. C. campanulcu (nov. spec). 



From axillary galls and the inflated seed-vessels of Cayn- 

 pallida roiundifoUa, sent to me by Mr. J. W. H. Traill, of 

 Old Aberdeen. (See Proc. Ent. Soc. Lond. 1871, p. 8.) 



69. C. Pteridis (nov. spec). 



From small rolls on the underside of the fronds o^ Pteris 

 aquiUna. (See Ent. M. Mag. viii. p. 99). 



When lean get fresh materials, I hope to furnish accurate 

 descriptions of these flies, and to refer them to their proper 

 subgenera. 



I consider the preceding list as a mere sample of what 

 Britain really harbours in gall-producing midges. But 

 this sample is all I can at present give for certain. Extensive 

 materials for the life-histories of the species enumerated are 

 in my hands, and so is more or less complete evidence of the 

 existence in Britain of at least double the number here given, 

 but I wish to breed the flies first before admitting them to 

 the list. 



MYCETOPHILID.^. 



SCIARA. 



70. tilicola, Loew, (C. Tilics? Walker, Dipt. Brit. iii. 



p. 130). 

 It produces oblong or rounded red and green, polythala- 

 mous galls on the young shoots and on the leaves of the 



