no 



at that time of the year, and to follow the brood through. Thus in 

 1 89 1 I arrived on the scene on August ist, but it was not until the 

 13th that any A. marginepimdata appeared, one being taken on that 

 day, four on the following, and so on in increasing numbers to the 

 23rd, when the species was exceedingly common ; but from that day 

 gradually diminished in numbers, until only a few wasted examples 

 remained when I left on the 30th. This year I did not reach East- 

 bourne until August 1 5th, and on that day found a couple of the 

 moths. The species gradually became more and more common 

 until the 24th, on which day 102 specimens were counted ; on the 

 25th fifty-seven ; on the 26th twenty, and by the end of the month 

 only two or three washed-out stragglers could be found. My attempts 

 to rear the larvae resulting from this brood, which, had they proved 

 successful, would 110 doubt have set the matter at rest, have thus far 

 been only partially so ; but, as will be seen from the following, they 

 point very clearly to a June emergence. Ova deposited on August 

 19th, 1 89 1, hatched September 5th, and the young larvae fed slowly 

 on knot-grass {Polygonum) until October 17th, when they were 

 moved to a lot of mixed herbage growing in a flower-pot. During 

 the winter they occasionally nibbled their food when the weather 

 was mild, but by May 23rd, 1892, only eight survivors could be 

 found. By June 13th these had spun cocoons for pupation, but 

 unfortunately all died without changing. 



[n considering these dates it must be borne in mind that these 

 larvae throughout their existence would have much less warmth than 

 they would have had in their natural habitat, where whatever sun- 

 shine there is falls directly upon the banks where they feed ; and 

 this would doubtless enable them to feed up quicker after hyberna- 

 tion, and would so curtail that period as to allow of the moth being 

 on the wing by the middle of June, thus giving ample time, just in 

 the hottest part of the summer, for another brood to feed up and 

 produce imagines by the dates on which I have found them ; and 

 there can be, I think, no doubt that, on the south coast at any rate, 

 the species is regularly double-brooded. 



Notes on the Earlier Stages of the Second Brood of 

 Cyaniris (Lyc^na) argiolus. 



On the afternoon of August 17th, one of the few sunny days that 

 fell to my lot during my stay at Eastbourne, I was wending my way 

 along the sea-front, towards the downs near Beachy Head, when a 

 blue butterfly, flitting leisurely over the tamarisk-covered banks, 

 attracted my attention. Blue butterflies, of one sort and another, 

 may be seen there frequently enough, but something in the colour 

 and flight of this particular one suggested to my mind that it was 

 not one of the species ordinarily met with. Consequently I kept it 

 in sight, not having my net fitted up at the time, in the hope that it 



