.172 THE entomologist's record. 



post-spiracular contrasts with the manner in which this 

 tubercle dwindles in some species. They are especially large 

 on 2.3 and 4, that on 2 almost suggesting a forward tuft as in 

 Orgvin. On 3 and 4 is a dorsal lozenge of bright yellow, as 

 also on II (the three pale segments), on the former it includes 

 half the trapezoidal tubercles, on the latter it is a large 

 escutcheon and includes both trapezoidals. The whitish lateral 

 marblings are so much more pronounced on 11 as to make 

 that segment still very pale. 



In the 4th skin, the larva presents some resemblance to the 

 full-grown larva, and in the 5th, there is little difference from 

 the 6th skin, except that the colours are rather brighter. The 

 difference in colouring is, in 4th and 5th skin, much greater 

 between individuals than between the skins. One, even in 3rd 

 skin, has a yellow escutcheon on 3, 4, 6, 7, 8, g and 10, including 

 the anterior trapezoidals, with a small patch in front of it and 

 nearly all the tubercles yellow, but the majority have them 

 black. 



In the 4th skin, 10-15 n^n^- i'"' length, some have the trape- 

 zoidals yellow, some brown, very few black. The finest 

 coloured have the trapezoidals yellow, with a little yellow 

 patch in front, except 5, which is dark, larger on 3 and 4, and 

 on II forming the characteristic large escutcheon. The sides 

 and dorsum black, covered with minute black hairs, the base 

 of each surrounded by a greenish yellow ring (much modifying 

 the general effect of the black ground colour), this coloration 

 tends to run laterally into lines, with the post-spiracular and 

 sub-spiracular tubercles, and, being more abundant and pro- 

 nounced, make the sides paler than the back. The escutcheon 

 is free from these. The post-spiracular carry many long hairs, 

 some larger than diameter of larva, nearly white and forming 

 a deep fringe on each side. The sub-spiracular and marginal 

 tubercles also contribute to this fringe. The head is black, 

 but usually with white line and patches similar to adult larva. 



In the 5th skin, this is about the same as in adult. The 

 trapezoidals are yellow, each with one erect black hair, about 

 as long as thickness of larva, the supra-spiracular very small, 

 yellow, with one hair, the post-spiracular large, orange above, 

 greenish-yellow below, with 10 to 20 long whitish hairs 

 forming a lateral fringe, sub-spiracular and marginal smaller, 

 pale-greenish and with numerous pale hairs, dorsal tubercles 

 of 13 and 14 pale yellowish, of ii yellow, like escutcheon. 

 The back is nearly black, changing on the sides to very light 



I 



