1883.] 153 



After moulting, the minute dots being not so black, it appears 

 much paler coloured, more of a drab tint stowing dark sub-dorsal 

 markings, but as the larva grows, and becomes about three weeks old, 

 it is then dark olive- green on the back, a lighter green on the sides, 

 and has a sub-dorsal row of dark brown tubercles and beneath them 

 a faint stripe of yellowish, the bristly hairs blackish-brown. 



Just before it begins to hibernate about the 10th of September, 

 it has grown to a length of nearly two lines, and of very stout pro- 

 portion, the colour dark olive-green having an interrupted black 

 sub-dorsal stripe, and below this at the end of each segment is a 

 transverse oval spot of orange-yellow, the surface of the skin generally 

 is much covered with little fascicles of black hairs. 



In the following spring, after moulting, it soon is of the length 

 of three and a half lines, and its colouring is a little fresher and darker ; 

 by the time its length has come to measure from four to five lines the 

 back and sides are very dark green, and so much covered with black 

 bristly hairs radiating from tubercular eminences as to appear blackish- 

 green in comparison with the belly which is olive-greenish-yellow, the 

 dorsal marking is velvety -black, the deep yellow side-spots enlivening 

 the general darkness. 



Towards the end of June and beginning of July it has reached its 

 blackest stage, for it is then intensely and beautifully black which 

 gives additional brilliancy by force of contrast to the light greenish- 

 yellow side spots, the head is black and shining, the second segment 

 green and smooth in front, the segmental divisions when stretched out 

 show greenish and glisten a little, but all the rest of the upper surface 

 is thickly covered with black hairs. 



The full grown larva is from 7 to 8 lines in length, sometimes 

 more, and nearly 3 in breadth, of elliptical figure, but with the head 

 small and retractile within the second segment, and this also being in 

 part retractile is twice as long as any of the others and tapering in 

 front, the anal segment is slightly tapered and rounded off behind ; 

 all the segments are plump and cut extremely deep ; the head is black 

 and glossy, with green upper lip edged with black, the antennal papillae 

 whitish tipped with black, the front retractile half of the second 

 segment is green and naked, the other half and on all the other 

 segments of the body the ground colour of the back and sides is very 

 dark green, along each side is a broken velvety-black stripe interrupted 

 at the end of each segment beyond the second or third by a bright 

 yellow elliptical transverse spot, each segment bears a series of ovate 

 tubercular eminences thickly studded with short black radiating bristles 



