252 THE entomologist's recokd. 



white patch, oval in shape and rather swollen in front. This patch has a 

 broad edging of lilue, suffusing the Avhite with light blue to some extent. 

 The outer edge is purplish-blue. Subdorsal line relatively narrower and 

 much more clearly defined. It now begins on the 1st abdominal seg- 

 ment, where it is, however, very faint. It is white with a light yellowish 

 suffusion on the 1st, 2nd, 8rd, 6th, and 7th abdominals. Its upper edge 

 is also slightly suffused with yellow, this colour tinging the green of the 

 dorsum above for some distance. Centrally the dorsum is pale green. 

 The thoracic segments are green, tinged with yellow. The white 

 raised spots are now very distinct. Dorsally each has a narrow ring 

 of dark green around it, and a small dark depression in the centre, 

 from which arises, apparently, a very minute hair, but I could not 

 make quite sure of it. From the middle of the 3rd abdominal seg- 

 ment to the end of the 7th is, immediately below the subdorsal line, a 

 shading of blue, becoming pale lilac-blue as the larva ages. It is very 

 faint on the 8th abdominal. On the 2nd abdominal and first half of 

 the 3rd abdominal segments the white spots below the hne are tinged 

 with blue, and those on the succeeding segments are half swamped in 

 the lilac-blue, particularly towards the end of the body. They are 

 ringed with dark blue. The narrow, yellowish, spiracular line, seen in 

 the previous stage, has almost entirely died out. A trace of it remains 

 on the first three abdominals, and a slight dash of it before the 

 spiracle on the other abdominals. Spiracles very distinct. They are 

 narrow, upright slits, with black edges, beyond which are light borders. 

 Ventral surface light green. True legs pinkish-brown externally, lighter 

 inside. Claspers green, with a weak yellow tinge, their hooks and 

 terminal pads greyish ; no light line along their bases. A consider- 

 able change has taken place in the caudal horn. Its total length is 

 now 7'8mm. For the first 4mm. it is fairly thick, greenish-yellow, and 

 waxy-looking. This part is sprinkled with tubercles inclined back- 

 wards and a little darker in colour (greyish). Minute colourless hairs 

 grow from them. The upper surface at the base has a roughly 

 triangular black patch, and the colour here is richer yellow. 3-2mm. 

 up is a black circle bearing black warts, one or two of which have long 

 hairs. After the black circle there is a slight downAvard bend and an 

 abrupt contraction, the tail being continued as a tapering spike ending 

 in a sharp point. The spike is blue-green and almost transparent ; 

 tip black. It has a few very small colourless warts, or tubercles, laid 

 back. The horn is still fairly mobile. When the larva is at rest 

 along the midrib of a leaf (back) it is carried horizontally, but when 

 walking or feeding it is raised, and can be brought almost upright. 



About midday, on October 2nd, the larva developed rather suddenly 

 the "stiff neck " preceding a moult. It had no trace of this at 11 a.m. 

 The length at the end of the fourth stage, when lying up for the fourth 

 moult, is 46mm. (not including the length of the caudal horn). The fifth 

 and final stage reached on October 3rd. The larva in its final instar 

 was so excellently described and figured by Mr. Dollman, for Tutt's 

 Natural History of the Brituli Lepidoptera (vol. iv., pp. 489-491, pi. ii) 

 that there can be no possible need for a further description, and I 

 therefore confine my notes to the earlier stadia, as being supplementary 

 to those that I wrote for the same work {op cit., pp. 488-489), and will 

 only add that these notes should be read with Mr. Dollman's figure 

 before the reader. [We would suggest that this account might be 



