PUOCEBDINGS. 191S. H/ 



eacli side, makiiiij five lines altogether. Head yellowi.sh green, somewhat 

 transparent. Position at rest much the same as at first, i.e., clasping 

 with the two pairs of legs next the anal claspers and with Ixxly raised. 

 Fed on sallow leaves freely. 



In the next instar the s])iracular while lines are liroader and nicire 

 conspicuous than any of tiie others, otherwise the ajjpearance of the 

 larva is much the same. ( )n 1st May, lar\'a 1*' nnn. long; mi change in 

 general appearance except that white dots are apparent on each seg- 

 ment, two on each side of the central line, placed diagonally, and others, 

 inconspicuous and variable, between the spiracular and subdorsal lines. 

 The larva mils up into a ring when disturbed, but the whole of the body 

 is not on the same plane. On 10th May, when (piiescent for moulting, 

 the larvae were 27 mm. long, of a soft watery green color, and the only 

 markings noticeable were the fi\'e longitudinal white lines, of which the 

 most pronounced were the spiracular, then the medindorsal. and finally 

 the two intermediate lines the most indistinct. The regular white dots 

 pre\iousl}' noted have now disappeared and the whole surface of the 

 larva (except the belly) seems to be occupied by obscure whitish llecks 

 only distinguishable under a hand lens. .\fter casting the skin just 

 described, the larva undergoes a complete change. The head becomes 

 very broad, slightly broader than the body, and the color of the bod}- is 

 a soft, velvety light brown, with darker brown markings ddwn the hack 

 with the exception of the first segment behind the head, whicli is plain 

 like the head and divided from it by a dark brown line, 'i'he spiracular 

 lines are \ery plain, being white tinged with brown. .\.ll tlie bellv lie- 

 low the spiracular lines, a lighter l)ruwn than above. Length of larva 

 36 mm. innnediately after moult. The darker dorsal markings are 

 arrow-head shaped, the point of the arrow starting at the fold of each 

 segment and extending obliquely forward across the segment and half- 

 way into the next towards the head. These \'-shaped markings start 

 from and are connected by a central dorsal line of the same color. 



By the 21st May most of the lar\'ae had disappeared for pupation in 

 soil placed in bottom of breeding jar. The full-fed lar\a is 40 mm. long 

 and 7 mm. wide. Just before pupation the colors become more dull and 

 the V-shaped marks not so conspicuous. It is a plump, healthy-looking 

 lar\a of a russet-brown color, with a double dorsal line under which 

 runs a vein which can be seen to pulsate, almost causing the line to dis- 

 appear when contraction of the \ein takes place. 



