188 [January, 



noticed its occurrence in great abundance in this neighbourhood in 1877 (Ent. Mo. 

 Mag. xiv, p. 111.). The mines were equally abundant in the two following years, 

 then they seemed almost to disappear, and it is only by knowing on what particular 

 trees to look for them that here and there one or two mines can now be found, 

 whereas, during those 3 years of their abundance, 20 or 30 in a leaf was the average 

 number. Perhaps other Neptictdce are subject to the same yariation. Last avitumn 

 the larvjE of Nep. uhnivora were quite plentiful along one small elm-hedge, before 

 which time I had never been fortunate enough to obtain more than an odd one here 

 and there. This year a cai'eful search on three separate days only resulted in half-a- 

 dozen mines. I do not think it has been recorded that, apart from the distinctness of 

 their mines, the larvae of uhnivora may always be distinguished from those of 

 viscerella by their hlue-green colour. 



I have mentioned above the great plentifulness oi suhhimaculella, but numerous 

 as they have been, their numbers have been nothing compared with ruhivora ; and 

 that not only in this immediate neighbourhood, and in Essex, but on the Lincolnshire 

 Coast, where Mr. W. H. B. Fletcher found them in the greatest profusion. This is 

 the third year I have taken them commonly ; before 1881 they do not seem to have 

 been noticed or recorded in England. It may be that, like quinqueJla, they too are 

 periodic in their appearance, and will presently again become rare. — W. Warren, 

 Merton Cottage, Cambridge, November 20th, 1883. 



Douhle-broodedness of ScoparicB. — I am much surprised to read Mr. Sang's note 

 in this month's Ent. Mo. Mag., p. 167, where, writing of double-broodedness in the 

 ScoparicB he says, " one can hardly imagine such a thing in that genus." I thought 

 it was thoroughly well known to all who have taken any interest in the group, that 

 Scoparia muralis is always double-brooded. I have myself reared the second brood 

 in Augiist from eggs obtained from a June moth, and the habits of the species are 

 precisely the same outdoors. Full-grown larvae can always be found in abundance 

 under and among moss on our old walls from February to April, and the images are 

 plentiful at the end of May and early in June ; but after about the middle of June 

 not an imago can be seen for some weeks, but the larvse are again feeding, which 

 produce a still more numerous brood of moths at the beginning of August. And 

 although there is certainly not the clear distinction between the appearance of the 

 broods of amhigualis that there is in muralis, I have little doubt that it also is to a 

 great extent double-brooded. It is always common in June, and although it occurs 

 on the wing all through the summer, it becomes, especially about our moors, very 

 plentiful again in August, and the specimens then are very fine and large. Conspicualia 

 has never been looked for in June, but this year one was accidentally taken in that 

 month, but the species not detected until it was too late to look for more. It is always 

 in good condition at the beginning of August, hence I think it is not unreasonable to 

 suppose there may be two broods of it also. — Geo. T. Pokbitt, Huddersfield, 

 December \st, 1883. 



Lepidoptera hred from larva on Myrica gale in Norfolk, with notes. — During 

 this and last year I collected a number of larvse from Myrica gale (Bog-Myrtle), 

 which produced imagines of Tortrix Lafauryana, and those of the following : 



