35 



specimens were captured near the last named place, by a person residing in 

 that town." 



In 1829, John Curtis wrote in his "British Entomology:" "This rare 

 insect is generally found near the coast, especially of Suffolk, Kent, and 

 Sussex, from the beginning of August to the first week in September." 



In 1831, the Rev. W. T. Bree writes in the " Magazine of Natural History " 

 " Colias hyale appears to be a maritime fly, occurring almost exclusively near 

 the sea coast. Mr. Le Plastrier possesses a beautiful series of specimens of 

 this rare insect, taken chiefly, if not entirely, near Dover. 1 ' 



In 1835, it was quite common in the South-Eastern counties, and a single 

 specimen was taken near Ross in Herefordshire, which appears to have been 

 the first observed west of Surrey. Edusa was also common in 1835. 



In 1842, the Rev. W. T. Bree writes in the "Zoologist" : "The summer 

 of 1842 was one of the finest we have had for many years, and therefore 

 favourable to the production of insects ; but what strikes me as strange is, 

 that the same season which produced Hyale in more than usual numbers, 

 should not have been equally productive of the allied species, Edusa." 



In 1842, Hyale occurred abundantly in the Eastern and Southern coun- 

 ties, and specimens were taken as far North as York, and as far West as 

 Wilton in Wiltshire, and the Isle of Wight. 



In the "Entomologist" for 1842, J. F. Stephens writes, "Of Colias hyale, 

 which seems to prefer chalky districts, and to make its appearance after a 

 fine and hot summer; I saw seven specimens in a deep chalk -pit on the 

 Southern side of the down, near Guildford." 



In the same volume, Mr. Thomas Desvignes writes, " You may safely state 

 that it only appears every seven years (perhaps one or two may be seen in 

 the interim.) Ever since I took them near Brighton in 1835, I foretold 

 that it would taken in 1842, which turns out to be true. The time of its 

 appearance is from the 15th of August, to the middle of September, but I 

 recollect seeing some specimens that were taken in June, by Le Plastrier at 

 Dover. They are very much pursued by Pieris brassica, which appear to be 

 continually tormenting them, seldom allowing them to settle; and should 

 they survive the day, the following day they are very much worn, and the 

 wings chipped. I have watched two males fighting and soaring in the air 

 till nearly out of sight. They invariably settle on the flower of the lucerne, 

 on which I should say they deposit their eggs, and which have been intro- 

 duced into this country with the seed orginally imported from Switzerland. 

 In 1835, I took fifty specimens in several fields near Brighton, and this year 

 twenty-two in fields in Northamptonshire, probably the most inland county 

 in England where Hyale has been captured." 



