2 [June, 



care to let the empty shell remain with it, and supplied it also with 

 some birch as well as lime leaves ; next day, however, it was looking 

 very miserable, unable to stand, and rolling about helplessly, and so 

 lingered till its death on the third morning, having, as far as I could 

 see, eaten nothing whatever since its hatching. 



Why I failed so totally I cannot explain, and can only hope that 

 further experiments with the egg may prove more successful. 



Fortunately, however, Mr. Thomas, on September 10th, 1S75, had 

 found a nearly full-grown larva on lime, and lent it to me on condition 

 of my sending back the imago, if reared ; and this I am happy to say 

 I was able to do. I received the larva September 13th ; it became 

 full-fed by the 21st ; next day began to spin, and the day after was 

 covered-in so as to be hidden, and the moth — a male, and quite 

 perfect — appeared during the evening of 12th June, 1876 — the first 

 British specimen reared in captivity. 



The egg in shape is roundish oval, the surface very finely pitted ; 

 its colour when first laid is pale straw-yellow, changing in four days 

 to pink at one end and a little round the circumferent margin, the 

 centre remaining straw-colour ; on the fifth day, the pink parts turn 

 to the rich red of a ripening strawberry, and on the ninth the whole 

 surface becomes purplish-brown. 



The newly-hatched larva shows a little of the peculiarity of the 

 adult form, as very slight rudiments of tubercles on the fourth 

 segment can just be detected, and the hinder segment bears no legs 

 and is carried at a slight elevation ; the colour is a reddish chocolate- 

 brown, with a darker brown spot on each lobe of the head. After 

 this point I can say nothing till the larva is nearlj^ full-grown ; at that 

 time I noticed that it sj^un many silken threads to keep its food 

 steady, and to secure its own foothold, and that its manner of eating 

 was to take large pieces out from the edges of the lime leaves : at 

 times it rested with the head and both the anterior and the posterior 

 segments of the body elevated, holding on to the leaf only by the 

 ventral legs, but when walking the whole of the segments are carried 

 in a tolerably level line, merely undulating a little in its progress, 

 though the anal one always has a slight upward turn. 



The full-grown larva measures one inch in length, and is in 

 proportion moderately slender, with fourteen legs, the anal segment 

 not having legs but much prolonged to a tapering point curving a 

 little upward, the head much larger tKan the second segment and 

 broadest near the mouth, the crown and lobes erect and deeply cleft, 

 and ilattcned in front as is the whole face ; on the back of the fourth 



