PR0CRIS STATIOES. 89 



young leaves and their stems. They are at present on 

 a growing plant of sorrel in a large flower-pot covered 

 with leno, and I have no difficulty in getting a sight of 

 some of them whenever the sun shines warm upon 

 their dwelling. They have passed several moults, of 

 which, however, I have not been able to keep an 

 accurate account ; they are now about 8 mm. in 

 length. As far as I have been able to make observa- 

 tion, the moulting is effected in the usual way through 

 an opening in the front of the old skin near the head. 

 I may add that I have taken a feeding larva from off 

 his sorrel leaf, and shut him up with a spray of rock- 

 rose, Helianthemum vulgare, but he would not touch 

 it for food. 



The little batch contained four rows of eggs, five or 

 six in a row, arranged not very regularly on their flat 

 sides ; the egg is in form oblong and flattened, being 

 about *85 mm. long, *5 mm. wide, and '25 mm. deep, 

 with the ends rather rounded, and the upper side 

 somewhat sunken ; the shell is wrinkled longitudinally 

 and rather shining ; the colour at first is light yellow ; 

 this becomes paler, and at last the head of the larva 

 shows at one end as a dusky spot. The larva frees 

 itself by eating out one end, but leaves the empty 

 shell otherwise untouched. When first hatched it is 

 barely over 1 mm. in length, of a fat, stumpy, even 

 figure ; the trapezoidal dots can be seen both placed on 

 a slanting raised tubercle, each dot bearing one long 

 stiff hair ; the colour a full yellow, the small head 

 looks as if yellow beneath with a glossy black tinge 

 over. In a week's time they are 1^ mm. long, and 

 show an orange dorsal line, with pale back and 

 yellow sides ; in two weeks just 2 mm. long, and have 

 got through a moult, and instead of being yellow have 

 the back now of a semi-translucent pale brownish tint, 

 with darker interrupted dorsal line, and outside the 

 dorsal tubercles a warm brown stripe ; the hairs have 

 become a little longer. In another fortnight another 

 moult is passed ; at the end of seven weeks they 



