364 Messrs. R. S. Bagnall and J. W. H. Harrison's 



Perrisia Rondani, 1846, p. 371. 



*90. P. abietiperda Henschel, 1880, p. 371 {Cecidomyia) ; 

 Kiefter, 1913-2, p. 73. 



Gall on Picea excelsa. Hoiiard, 100. 



Northumberland, near Hexham. Durham, Gibside 

 and Eastgate. Lancashire, Grange-over-Sands, rare. 

 Yorkshire, Nunthorpe. 



*91. P. acercrispans Kieffer. 1888-2, p. 266 (Cecidomyia); 

 1913-2, p. 73. 



On sycamore. Houard, 3984. 

 Durham, dene near Fencehouses. 



*92. P. acercris'pcms var. rubella Kiefter, 1896-2, p. 37. 



On Acer campcstre. Houard, 4025. 



Recorded by Mr. Burkill from Monmouthshire. 



93. P. acrophila Winnertz, 1853, p. 233 [Cecidomyia) ; 



Kiefter, 1913-2, p. 73. 



On Fraxinus. Swanton, 681 ; Houard, 4643. 

 Local ; records from all counties excepting Lancashire 

 and Cheshire. 



94. P. afflnis Kiefter, 1886, p. 330 {Cecidomyia) ; 1913-2, 



p. 73. 



On Viola spp. Swanton, (532, 634, 635 and 637 ; Houard, 

 4281, 4283, 4284 and 4290. 



Local ; records from all counties excepting Cheshire. 



*95. P. alni F, Loew, 1877, p. 2 {Cecidomyia) ; Kiefter, 

 1913-2, p. 73. 



On Alnus. Houard, 1127; known throughout Europe. 

 Northumberland, Ninebaidvs, once only. 



96. P. alpina F. Loew, 1885, p. 110 {Cecidomyia); Kieft'er, 



1913-2, p. 73. 



On Silene acaulis. Swanton, 344 ; Houard, 2274. 



97. P. anglica Kiefter, 1909, p. 31 (gall and larva); 



1913-2, p. 73. 



On Vaccinium ViLis-idaea, =■ Cecidomyid sp. Swanton, 

 676, and Houard, 4571. 



