CONTRIBUTION TO THE LIFE-HISTOKY OF HELIOTHIS PELTIGERA. 287 



abdominal segment at the base of the anal claspers. Ground colour 

 of the body light green, with a yellow tinge. Mediodorsal stripe dark 

 greyish-green, bordered by large, pale, whitish spots, most conspicuous 

 at the junctions of the segments. Subdorsal line composed of five or 

 six pale, yellowdsh-white, oblong spots ; this line is bent up at an angle 

 on the 8th abdominal segment, forming a conspicuous whitish spot 

 just below tubercle ii. Below this line the lateral area is dark greyish- 

 green, becoming lighter green as the flange is approached. There are 

 here, on each segment, one or two conspicuous pale spots, but their 

 position is not constant. The spiracles are black-ringed. Below the 

 flange is a subventral stripe, conspicuous as an oblique stripe running, 

 over the anterior position of each segment, upwards to the base of the 

 claspers. On the 1st and 2nd abdominal segments is a pale, rather 

 faint, medioventral line. The tubercles, and secondary hair-clothing, 

 are very similar to those of the fourth instar, except that the white 

 points are much more numerous, and many of them reach a length of 

 nearly 0'08mm. I think it was in this instar that I first noticed the 

 presence, on the larva, of those peculiar, very small, tubercles, which often 

 occur in larvee in front of the spiracle and on the anterior portion of 

 the segments. Sixth instar : Length 27mm. The larva is of the same 

 shape, and proportions, as in the fifth instar. Ground colour pale 

 green, with a slightly mealy appearance, on account of the numerous 

 white points. The mediodorsal stripe, which runs uninterruptedly 

 from the anterior of the mesothorax to the centre of the 1st abdominal 

 segment, is black, but, owing to the numerous pale points contained in 

 it, it looks olive to the unaided eye. On the abdominal segments this 

 stripe is interrupted, being quite absent on the 2nd and 3rd sub- 

 segments. It is altogether absent on the 9th and 10th abdominal 

 segments. The pale subdorsal line is traceable on the 1st, 2nd, and 

 3rd subsegmeuts, but conspicuous on the 4th and 5th. The very dark 

 broad stripe below this is constant on all the subsegments. The 

 flange is, comparatively, not nearly so heavy as in the fifth instar, nor 

 is it so white, as it becomes pinkish on the 7th, 8th and 9th abdominal 

 segments. The space between the mediodorsal stripe and the flange is 

 occupied alternately by transverse bands of green and rich umber with 

 a pinkish hue, though on the 7th, 8th and 9th abdominal segments, 

 this space is almost entirely umber. The spiracles, which are brownish- 

 grey, with a black ring, are surrounded by a pale space. Beneath the 

 flange the larva is green, but the flange is bordered below, at the 

 centre of each segment, where tubercle v arises, with umber, and there 

 is a patch of the same colour lower down. The prothoracic shield is 

 brownish-green, not well marked, and there are still only four hairs on 

 the anterior and posterior borders. Below the shield is a tubercle of 

 ordinary size, with a very small tubercle below. Then follows the 

 large, oval, black-ringed spiracle, with a very small, dark, hair in front 

 of it, and a large tubercle further in front. Below the flange are two 

 moderate-sized tubercles. The mesothorax has five subsegments ; all the 

 tubercles are on the large 3rd subsegment ; i, ii, and iii are close 

 together, in a transverse line, iv is rather further back. Between iii 

 and iv is a small accessory tubercle; v is w^ell forward on the flange, 

 and just above v is a large accessory tubercle with a white hair. 

 Further down is another large tubercle. The metathorax agrees with 

 the mesothorax. 



