15 Gall of Cecidomyia species on nettle, Urtica gracilis, 



adult unknown 

 i6 Gall of Cecidomyia u r n i c o 1 a O. S. on Urtica 



gracilis, adult unknown 



1 7 Peculiar adherent type of gall, potentially a bud deformation, 



on solidago from which has been reared both the nun midge, 

 A s p h o n d y 1 i a m o n a c h a O. S. and Camptoneur- 

 o m y i a a d h e s a Felt 



1 8 Gall on leaf stem of V i t i s 1 a b r u s c a produced by S c h i z - 



m }' i a p e t i 1 i c o 1 a Felt 



19 Swelling at base of leaf stalk of wild cherry produced by 



Cecidomyia species, adult unknown 



20 Another type of the same deformity 



219 



