NOTES ON SCOPARIA ANGUSTEA. 319 



Mr. W. H. B. Fletcher, of Worthing, on the 11th of August, and 

 that these produced imagines in October; he also states that 

 Mr. Fletcher is satisfied it is only single-brooded at Worthing. 



I now come to my own experience of the species. Early 

 last February (on the 6th, I believe), I was looking at some 

 moss which covered the surface of a chalk rock in this neighbour- 

 hood, and discovered that it was full of the larvae of a Scoixiria. 

 I peeled a piece off, and found full-fed larvae; and not only these, 

 but pupae. This somewhat surprised me, and, thinking they 

 might prove something new, I collected a good many ; the spot, 

 however, on which they occurred was rather inaccessible of 

 approach, and, getting somewhat too eager, considering the 

 slippery state of the ground (it was a partial thaw), I came 

 down much faster than I went up, and in so doing upset my box 

 of pupae. I did not feel inclined to climb again that day, and 

 so, picking up myself and as many of my prizes as I could find, 

 I wended my way homewards. 



Thinking the matter over, I came to the conclusion that 

 I had got Scoparia dnhitalis, which is very common everywhere 

 here, and so placed the pill-box containing my remaining pupae 

 in my breeding-room. Happening to look into this box, on the 

 20th of March, I was much surprised to find all of them had 

 produced imagines of S. angustea, apparently some time back, 

 as they were dead. As soon as I got an opportunity I went to 

 the locality for more (on March 24th), but found that the 

 majority had emerged, and I was only able to procure about a 

 dozen : these came out by the end of the month. 



On August 13th I again visited the locality, and found full- 

 fed larvae, pupae, and one imagine. From the pupae taken on 

 that day I bred, during the month, a long and fine series. It is 

 thus conclusively proved that in this locality, at any rate, the 

 species is double-brooded. 



The variation in the time of emergence in different localities 

 is most strange. Mr. Porritt gets the single brood at Hudders- 

 field late in July and early in August, within a week of the date 

 when the second brood appears here. Mr. Fletcher gets his 

 single brood in October. Again, Mr. Barrett bred several 

 specimens of the first brood in May at Plymouth, which one 

 would expect to be as early a locality as any in the British Isles ; 

 and yet in this district, in an exposed situation facing the 



