^•' 100 



^formed on local authority, existed from time immemorial, it cannot 



p accepted as a satisfactory explanation for the sudden disappearance 



t this butterfly. But even assuming that the disappearance of L. 



irion might be due to this cause on the hills, commons, and sheep- 



alks, both in the Cotswolds and in Devonshire, that would not 



jcount for the extinction of the species in the open spaces in the 



: 3ech-woods, where, of course, from the nature of the surroundings, 



I'le burning of the grass has never been practised. Other persons 



i'pe suggested that the extinction of Z. Arion is due to the rapacity 



'C collectors. This, I believe, may probably be the case where the 



necies is confined to such a limited area as in the locality which I 



:'st described ; but it seems incredible that an insect which was as 



«mmon in 1877 as I have reported it, and which was distributed over 



1^1 extent of ground nearly two miles in length, could have been 



fddenly exterminated. 



It seems more probable that the sudden and total disappearance 



( L. Arion from the locality in which I found it so plentiful in 



j,77, may have been due to an unprecedented succession of mild 



inters, ungenial springs, wet and cold Junes, and other unfavoura- 



h meteorological conditions, rather than to the burning of the grass 



-which, at least in one locality, had never been practicable— or the 



rpacity of collectors which could scarcely have been equal to the 



tik of the extermination of nearly all the " common blues " and 



C3er species, which, together with Arion, had been plentiful in the 



sue localities in 1877. 



Surbiton, Surrey : 



September 8th, 1884. 



Note on second brood of Argynnis Uuphrosyne and Selene. — As I have met with 

 t] second brood of A. Selene so early as August 13th of this year, I am now in- 

 c.ied to think that the specimen of A. Euphrosyne taken on August 1st {cf. Ent. 

 y. Mag., xxi, 88) may have been one of the second brood. Can any of your readers 

 g3 us information with respect to the second brood of the latter species ? 



The Luzula on which I found A. Selene congregating was L. campestris var. 

 c(gesta, Sm. ; how it came to be printed L. glomerata I cannot imagine.* — E. N. 

 E)0MFIELD, G-uestling: September \st, 1884!. 



DeilepTiila lineata at Dover. — A fine specimen of this insect was picked up 

 n't here by a working man yesterday morning ; it was given by him to Mr. Davis 

 ol.his town, in whose cabinet it will find a resting place. It was shown to me 

 ai e, and may be worth a record in your Magazine. — Sydney Webb, Maidstone 

 Ease, Dover: September l^th, 1884. 



* Through an unfortunate editorial lapsus.— 'Eds. 



