EUPITHECIA EXTENSARIA. 41 



reared some hundreds of them, and a few notes, 

 supplementary to Mr. Barrett's (Ent. Mo. Mag., 

 April, 1889, XXV, 258) will probably be not without 

 interest. The larvas collected at large produced 

 moths freely the following June, and I had no dif- 

 ficulty in pairing a number of them over a growing 

 potted plant of Artemisia maritima, which I had had 

 for some time awaiting their advent. Soon eggs were 

 deposited in considerable numbers ; they were placed 

 singly, but often a number in close proximity, on the 

 slender leaves of the food-plant, and each moth, after 

 laying three or four eggs or so, would usually fly up 

 from the plant to the gauze covering, to fly down 

 again almost immediately to some other sprig, and 

 continually repeat the same performance. No doubt 

 its habit in the natural habitat would be to fly from 

 sprig to sprig, and from plant to plant, in which case 

 eggs from one moth might extend over a considerable 

 area. The wonder, then, is that its habitat should be 

 so exceedingly restricted, as it appears to be, on 

 the Norfolk coast (see Ent. Mo. Mag., April, 1889, 

 XXV, 258 and 398). 



The egg is of fair size, oblong-oval, bright glistening 

 orange-yellow. Those first deposited, about the 17th 

 of June, hatched out in numbers on the 29th and 

 30th, and by the 4th of July all of them seemed to be 

 out. 



The minute newly-emerged larvas were yellow, 

 tinged with green. By the 14th July they were 

 nearly a quarter of an inch long, pale yellow or 

 greenish, and having faint indications of darker 

 dorsal and subdorsal lines. A fortnight later, on the 

 28th, many of them had attained to five-eighths of an 

 inch, were slender, and tapered a little towards the 

 head. The colour was now bright green, a little 

 freckled with white dots, the subdorsal and spiracular 

 stripes clear white, but as yet with no indication of 

 the pink colouring on the spiracular region which 

 was so noticeable in the parent larvae ; head bright 



