28 THE ENTOMOLOGIST. 



pointed serrated bristles with pedestal bases ; these form a 

 longitudinal fringe along each side of the furrow. The sides are 

 concaved with a prominent lateral ridge, also furnished with a 

 fringe of bristles similar to those on the dorsal surface, and 

 immediately below is another series of long fine simple cream- 

 coloured hairs ; both series project laterally ; the bristles are 

 ochreous, with blackish tips. Scattered over the body are 

 numerous short bristles and circular discs resembling spiracles. 

 The head is pale ochreous and black. The fifth, sixth, and 

 seventh segments are varied in colouring, with yellowish pale 

 green and pink ; the remaining segments are purplish rose. 

 The ventral surface, claspers, and legs are greenish white. 



Seven days after the second moult it measures J in. long. 

 In shape it is similar to the previous stage. The head is shining 

 black, and while at rest is concealed under the projecting 

 flattened anterior segment. The dorsal area, excepting the 

 fifth, sixth, and seventh segments, is a deep rose colour, and a 

 beautiful rich rose tint exists on the lateral ridge of the second, 

 third, fourth, and fifth segments, becoming white on the sixth, 

 seventh, and eighth segments, and rich rose on the last four 

 segments, extending round the anal extremity. The central 

 third of the body is a pale yellowish green with darker green 

 oblique stripes. On the inner dorsal edge of the fifth, sixth, and 

 seventh segments is a deep rose crescentic mark externally 

 edged with whitish. The spiracles are pale amber-brown. The 

 whole surface is densely sprinkled with minute spines. Along 

 the dorsal and lateral ridges are clusters of much longer spines 

 on each segment, excepting the eleventh. The whole of the 

 ventral surface is of a greenish pearly white. It feeds deeply 

 into the tender shoots of its food-plant. The third and last 

 moult takes place during the last week of May. 



After third moult — fully grown — it measures, when crawling, 

 f in. long. The head is pearly white, with slight greenish 

 reflections, marked with pale olive in front. The mouth-parts 

 are red-brown and white ; eye-spots black. The first segment is 

 compressed and rounded, completely overlapping the head, and 

 indented in the centre, where there is a glazed whitish disc. 

 The body is much elevated dorsally. The second, third, and 

 fourth segments are not humped, but merely sunken in the 

 centre, forming very slight dorsal ridges. The fifth, sixth, 

 seventh, eighth, and ninth segments inclusive are strongly 

 humped, each segment rising to a point on the dorsal ridge, 

 leaving a deep central furrow ; these points have each a sub- 

 marginal crescentic rich deep purple-rose mark on the inner 

 side, and externally outlined with white on the fifth, sixth, and 

 seventh segments. The anal segment has a longitudinal dorsal 

 mark of the same rose colour and a paler rose tint blended round 

 the lateral edge. The ground colour is a clear green, with four 



