58 THE ENTOMOLOGIST. 



comfort, that if the leaf, on the under side of which it has 

 constructed its cocoon, be turned over and exposed to the 

 light, the larva becomes uneasy, and if kept in that position 

 for any length of time refuses to remain in its cocoon, and 

 wanders away to some other locality that offers it the necessary 

 privacy, and spins another cocoon ; but if the leaf is at 

 once replaced and allowed to remain undisturbed in its 

 original position, the larva is pacified, and will remain inside 

 its cocoon. After a few days residence in its cocoon its body 

 becomes much shrunken, and at the proper period it slowly 

 passes into the pupal form, that is to sa}-, supposing it is not 

 infested by a parasite. The pupa, which is about four lines 

 long, is at first quite white, its whole outer surface after a 

 little lime becoming suffused with a pale brown tinge ; each of 

 the eyes has a small circular-shaped central black speck ac- 

 companied by a little darkish coloured dash, a slight distance 

 beyond ; the last two abdominal segments turn pale pinkish, 

 deepening by degrees to dull pink ; the anal segment, which is 

 narrow and somewhat pointed, is covered at its extremity 

 with some half dozen little hooked bristles. On each side 

 of the ventral surface of the penultimate segment is situate 

 a small tubercle or spur, and near the centre of the same 

 segment two minute, dark brown-coloured spots make their 

 appearance. As the pupa slowly waves its abdomen about, 

 the tips of the wings appear edged with pinkish-coloured 

 pigment, its head, thorax, wing-sheaths and abdomen turning 

 to a somewhat darker brownish tint; the dorsal vessel then 

 becomes visible along the abdominal segments; its eyes first 

 turn brown, but afterwards deepen into a jet-black ; the base 

 of the abdominal segments, from the fourth to the seventh in- 

 clusive, become encircled with a narrow brown-coloured band, 

 and the centre of the dorsal surface of the first and second 

 abdominal segments then have a clouded look : a day or two 

 afterwards the antennae turn darkish, the head, thorax and 

 wing-sheaths assuming another and a darker shade of brownish 

 tint, the head and thorax particularly so; the dark cloud pre- 

 viously noticeable on the back of the two anterior segments 

 of the abdomen has, by the time this stage of the coloration 

 is reached, sunk down to the region of the fourth, fifth, sixth 

 and seventh segments ; the head becomes much blotched 



