330 . Transactions. 
The Cocoon. (Plate 26, fig. 2.) 
his is constructed in rather a peculiar way. The larva, having 
moulted as above between two applied leaves, makes a transverse cut of 
about mm. in the outer (under) cuticle of the inner leaf, and, working 
upwards, insinuates itself under the cuticle; then, turning, it repeats 
the performance downwards, forming a shallow somewhat elliptical-shaped 
cavity between the cuticle and remainder of the leaf. The transverse 
eut extending across its middle is now repaired with silk on the inside, 
d in the completed cocoon is difficult to find. The thin outer cuticle 
to one another, the leaf on the outside of the cocoon receives a hollow 
depression. The pupal stage lasts six to seven months, from February 
till mid-August. 
The Pupa. (Plate 31, figs. 1-3.) 
The pupa lies in the cocoon in an upright position, its ventral surface 
innermost. Colour at first pale creamy white, becoming later light brown, - 
darker on dorsum, to black with pale markings on wings prior to emergence. 
It is somewhat compressed dorso-ventrally, the ventral surface being more 
or less keeled or prominent along the mid-line, so that a transverse section 
about the fourth abdominal segment would be broadly triangular in shape. 
The shape of the pupa is frequently influenced and even slightly deformed 
by external pressure caused while the cocoon is still in the bulb. 
ale. The head as seen in profile from before or behind is square- 
shaped, due to the lateral prominence of the basis of the antennae; viewed. 
from the side it is bluntly rounded. Ventral view: Front broad, roughened ; 
fronto-clypeal suture represented by a shallow transverse depression ; 
labrum small, on either side of it a small rounded area possibly representing 
the mandible; eyes relatively large, soon become dark brown to black, 
the eye-cap, that portion of the antenna covering the hinder part of the 
eye, rather prominent and roughened with small transverse rugae ; labial 
palpi ill-developed, short, constricted at 1, slightly bulbous caudad, only 
about two-thirds the length of maxillae; maxillae short and broad, do not 
quite reach antennae laterad, they meet in the mid-line below labial palpi; _ 
сохае have a narrow origin above between maxilla and antenna and first - 
leg, otherwise about one-fourth as broad as long ; the first legs meet in mid- 
line for their lower third; the second legs together with antennae extend 
to about mid-point of pupa; appearing from beneath the former are tne 
i тіло 
all three structures terminate about the level of junction of segments 4 
and 5 sal view : vertex is narrow in its mid-third, being some- 
what expanded laterad against antennae; the front is broad and head 
devoid of cutting-plate or other specialized structure of like nature; the 
prothorax is much expanded against antennae, but in its mid-third is very 
