Guernsey - noted as numerous, producing at least 3 generations, first appearing 20.iv. and fresh specimens 



around until 15.x. 1917, F.E. Lowe, 1918(8):14. 

 Alderney - noted as common, 1919-1924, W.F.K. Thompson, 1924:17. 



Jersey - noted as abundant, stated as agreeing better with French specimens than with British; St. Martin, St. 



Catherine's Bay, vi.-vii. 1922, N.D. Riley, 1925(58):150. 

 Sark - specimens seen, 25.viii.1922, W.J. Kaye, 1922(34): 175. 

 Herm - specimens seen, viii.1922, W.J. Kaye, 1922(34):175. 

 Alderney - specimens seen, viii.1922, W.J. Kaye, 1922(34):175. 



Sark - specimens taken, 9. v. & 21.vii.1931 (2nd brood), L.H. Newman, 1931(43):184 & 185; 1933(11):154; 



[Rothschild collection, BMNH] . 

 Sark - migration observed, 4.vi.l931. L.H. Newman, 1931(43):184; & 1933(11):154. 

 Sark - specimens taken (2nd brood), 21.vii.1931, L.H. Newman, 1931:185; [Rothschild collection, BMNH]. 

 Jersey - noted as generally abundant; specimens sometimes seen in early March, early appearances attributed to 



being incubated in the hot-houses, borne out by the observation of specimens flying in Mr Bree*s 



tomato houses in [parish?] at Fauvic, A.C. Halliwell, 1933([12?]):111. 

 Guernsey - specimens seen at end of v. 1942 and swarms seen in viii.1942, C.J. Shayer, 1943(13):373. 

 Guernsey - specimens seen, 18.iii.1943, noted as commoner by early iv.1943, C.J. Shayer, 1946(13):395. 

 Guernsey - specimens seen after hibernation, 27.iii.1944, C.J. Shayer, 1946a(13):398. 



Guernsey - specimens seen, 20.iii. 1 945, seen at Easter, increasing in numbers by 15.iv. 1945, C.J. Shayer, 

 1946b(13):402. 



Herm - 1 specimen seen, 29.vii.1945, C.J. Shayer, 1946b(13):405. 



Jersey - noted as a common pest on cabbages, W.J. Le Qucsne, 1946a(82):22. 



Guernsey - 1 specimen seen, l.iv.1946; first seen in large numbers, 23.V.1946, C.J. Shayer, 1948(14):12. 

 Guernsey - 1 specimen taken in house, 13.ii.1947, Mr Vernon Le Maitre; specimens seen through to early 



x.1947, C.J. Shayer, 1948a(14):123. 

 Guernsey - specimens seen, 25. & 26.iii.1948, C.J. Shayer, 1949(14):237. 



Guernsey - 1 specimen seen on l.iv.1949, noted to be present in appreciable numbers by 1 5.i v. 1 949, C.J. 

 Shayer, 1950(14):348. 



Guernsey - seen in droves in Castel, Grandes Rocques district, 24.vii.1949, C.J. Shayer, 1950(14):349. 

 Guernsey - observed in fair numbers by mid-v. 1950, C.J. Shayer, 1951(15):18. 



Guernsey - 1 specimen seen, 21. iv. 1951, 3-4 weeks later species became abundant; mentions migration of 

 whites from France in late summer, but does not state which species were involved, C.J. Shayer, 

 1952(15):96. 



Guernsey - specimens seen, 16. iv. 1952; populations increased by late vii.1952; C.J. Shayer, 1953 (15):171. 

 Guernsey - 1 specimen seen in St. Peter Port, St. Stephens Church, 24.iii.1953; noted as abundant in Vale, 



around the Portinfer, viii.1953, C.J. Shayer, 1954(15):250. 

 Guernsey - noted as abundant in St. Peter Port, lower Le Val des Terres, late viii.1953, C.J. Shayer, 



1954(15):250. 



Guernsey - noted as normally abundant in Vale, Portinfer, 15.viii.1954, C.J. Shayer, 1955(15):342. 



Guernsey - noted as common in summer of 1955, especially in [parish?], the Caledonia Nursery on l.vii.1955, 



C.J. Shayer, 1956(16): 18. 

 Guernsey - 1 specimen seen, 1 0.iv. 1 956, C.J. Shayer, 1957(16):126. 



Guernsey - noted as fairly common in Vale, Portinfer, 8.viii.l956, C.J. Shayer, 1956(16):126. 



Guernsey - [although referred to only as White butterflies, it is here assumed that rapae was the dominant 



species involved] specimens seen, 22.iii.1957, increasing in numbers two weeks later and eventually 



becoming abundant, C.J. Shayer, 1958(16):201. 

 Guernsey - 1 specimen seen, 19. iv. 1958, becoming plentiful by the end of the month, C.J. Shayer, 



1959a(16):320. 



Guernsey - specimens seen, 3.iv.l959; by July a marked abundance was observed and extremely large swarms 

 were seen in Castel, Grandes Rocques Common in company with napi, 19. vii. 1 959, C.J. Shayer, 

 1960(16):396. 



Guernsey - noted as appearing later than usual in 1960, C.J. Shayer, 1961(17):17. 

 Guernsey - earliest specimens seen, 4.iii.l961, C.J. Shayer, 1962(17):100. 

 Alderney - 1 specimen taken at Essex Hill, 24. vii. 1962, M. Shaffer; [BMNH]. 

 Guernsey Bailiwick - noted as common in all islands, C.J. Shayer, 1967a(18):28 & 29. 



Guernsey - first sighting of the year on 9.W.1969; 1 specimen observed in Vale, Portinfer, 24.ix.1969, it was 

 noted that the left hindwing was yellow [possibly a gynandromorph], C.J. Shayer, 1970(18):354. 



Channel Islands - noted as very common in all the islands; specimens in greenhouses suggesting a reason for 

 recorded early appearances, R. Long, 1970(21 ):244. 



Guernsey - noted as being abundant in early ix.1971, C.J. Shayer, 1972(19): 17. 



316 



