102 [October, 



The full-growu larva is from six-eighths to seven-eighths of an inch in length, 

 moderately stout and cylindrical, tapering just a little at the two last segments, and 

 also in front from the tliird segment to the head, which is smaller than the second 

 segment, and globular. 



The ground colour is a dull brownish-grey, finely freckled with a darker tint, 

 both of which below the spiracles become rather paler ; on the second segment is a 

 darker dull plate, and the head is darker still ; the blackisli-grey dorsal line is some- 

 what interrupted on the middle of each segment ; the greyish paler brown sub- 

 dorsal line, which is continuous on the thoracic segments, is indicated only by a 

 short dash at the beginning of each of the others, and below this dash there comes 

 lower down the side a thick, short, blackish streak, bifurcated a little at its hinder 

 end ; the spiracles are black ; the tubercular dots are blackish, each in a ring a little 

 paler than the ground colour ; the skin is without any gloss, but covered with an 

 exceedingly fine pearly pubescence, best seen on the parts retiring fi-om view. 



The pupa is a little more than half an inch in length, of moderate stoutness, the 

 abdomen very slightly tapered off towards the tip, which terminates in a spike of 

 two diverging recui-ved spines, the base encircled with six others of shorter lengths. 

 Its colour is dark brown with but little gloss, the surface being very minutely pitted, 

 excepting the abdominal divisions, which are rather shining. — W. B. 



Heemi]s^ia deritalis. 



On August 5th, 1872, Bome eggs of tliis species were most kindly 

 sent to me (W. B.) by Mr. W. H. Harwood, who has devoted much 

 time and attention in elucidating its history. 



Some of the young larvae hatched on the 6th, and devoured their 

 egg-shells, — and at first I gave them fallen leaves of sallow and 

 bramble, which probably became too dry, for, on the 26th, most of 

 them were dead, but the survivors looked healthy. 



The newly-hatched larva is about one-sixteenth of an inch long, with a large 

 pale brown head, tlie body whitish and pellucid, its internal broad vessel of dark 

 brown shows through the skin to the full width of the thoracic segments, and from 

 thence tapers to a blunt point within the tenth segment ; the usual dots are blackish 

 and shining, and bear each a long pale hair. 



By August 26th their colour had become rather browner, and a narrow brown 

 plate was visible on the second segment. On October loth Mr. Harwood kindly 

 added to my stock several more of tlie brood, which had been fed on withered oak 

 leaves. By the time the larva was a quarter of an inch in length, the skin was no 

 longer transparent, but opaque rusty-brown, assimilating in appearance to the fallen 

 leaves which formed its food : this dress was retained till after hibernation, but in 

 May, after a movdt, the skin became more velvety, and the colour darker brown. 



Cold weather coming on, I noticed on the 14th of November that they were 

 inhabiting little nooks and corners of the leaves, which they had formed by turning 

 down the edges, and securing by three or four stout silk threads, or else by joining 

 a part of one leaf against another by similar means. Following the directions I had 

 received with them, I had them all together with a plentiful supply of fallen oak 

 leaves sewn up in a bag of calico, and tied to a branch of a tree three feet from the 



