THE OENUS ACRONYCTA AND TT8 ALLIES. 251 



Its fashion of living between spun leaves is by no means 

 that of an Acronycta, even if it be not characteristic oi Liparis. 

 This habit is, however, very characteristic of the young larva 

 of Leuconia sdlicis. 



The pupa (PL IX.) is nearly black, with paler mem- 

 brane at the incisions of 9 and 10. It is broad and full at 6.7 

 and 8, narrow at 4 and 5, and tapers rapidly; 12, 13 and 14 

 finely tapered. The anal armature is a fairly tapering process, 

 longitudinally ribbed, ending in an irregularly ribbed or pitted 

 bulb, slightly flattened above, and terminated by a bunch of 

 hooks, all arising together and lying in the same horizontal 

 plane, and consisting of four larger ones, two spreading to 

 either side, and three or four very small ones on each side 

 crowded at the base of the others. 



Diloha ccendeocephala. — The egg (PI. VIII., figs. 11, iia, lib) 

 is a dome of rather less than a hemisphere, I'oo mm. in dia- 

 meter, with 14 or 15 ribs, the top is rather flattened over an 

 area of about 0*30 mm. in diameter, making a very large micro- 

 pylar area. The ribs are rather high, but not sharp, and the 

 secondary ribs are numerous and pass continuously over the 

 primary ones. The primary ribs pass smoothly into the micro- 

 pylar area without any irregularity or any meeting or division, 

 whilst the secondary ribs form a network of small cells. 



In the NocTUA (and Acronycta) egg the cells around the 

 microp3dar area seem as they pass outwards so to arrange 

 themselves that their radiating dissepiments form the primary 

 ribs, and the others the secondary ones. Here the cells seem 

 to arrange themselves into the secondary ribs, but the 14 or 15 

 primary ribs seem to be flutings underlying altogether these 

 cells, and consequently the ribs into which they arrange them- 

 selves. They are laid in groups of fifty or more, nearly touch- 

 ing each other, but not overlapping, or always in very orderly 

 arrangement, and are coated with abundant scales of the moth. 

 The winter is passed in this state. 



The newly-hatched larva (PL IX.), 2*50 mm. in length, 

 is of a grey sooty colour, nearly cylindrical, head large and 

 black, the nth segment presents no difference from the others. 

 The tubercles each carry one long hair, dark at the base, pale 

 at the tip and of a length nearly twice that of the larva. The 

 skin between the tubercles is covered with fine rough points, 

 almost hairs. The 2nd segment has a black dorsal plate 

 carrying six strong hairs and two tubercles in front of spiracle ; 

 on 3 and 4 the conjoined trapezoidal tubercles have each two 



