MELANARGIA LACHESIS. 305 



few segments, but is right in that line farther back on the larva, whilst 

 i also touches that line towards the end of the body ; iii is near the 

 lower edge of the supraspiracular line, on an intermediate subsegment. 

 The spiracle is a small, shiny brown button ; iv and v are well below it, 

 near together on the flange. On abdominal segment 1, v is to the fore 

 of iv, and only a little lower ; on segments 2 and 3, v is brought nearer 

 to and more under iv. On segment 4 it is almost under iv. Then it 

 comes forward again until segment 8 is reached, when it is again nearly 

 under iv. The bases of these two tubercles are in contact with one 

 another ; vi and vii are on the swelling below the flange, but one of 

 them seems to be often absent, or very hard to detect. On segment 8 

 the spiracle is in the supraspiracular stripe, with which the spiracular 

 line merges at this point. It is a large, pale wart, with a light brown 

 chitinous circle on top. The 9th and terminal segments make 

 practically one, there being only a very slight separating incision. 

 Each prong of the fork is formed by a large, elongated tubercle 

 placed horizontally, and continued in a long, colourless hair. In front 

 and a little lower, is the tubercle on the supraspiracular stripe bearing 

 a long hair. Another long-haired tubercle stands in front of the base 

 of the prong on the dorsal side, inclined strongly backwards. These 

 tubercles correspond respectively with ii, iii, and i ('?). The anal clasper 

 has two medium length, and three or four short, thick hairs. The hairs 

 arising from the tubercles on this larva are worthy of notice. They are 

 mostly long, and the curious way in which they are bent, or kinked, is 

 remarkable (pi. xiv., fig. 1). All those on the prothorax incline forwards, 

 being only slightly curved, except the hair from iv, which is straight and 

 lies back, and those from ix and x, which diverge. On the meso- and 

 metathorax, the hairs from i and ii are somewhat enlarged, about 

 i up, and abruptly bent forward at this point, leaving a more or less 

 spurred elbow, but the projection is not very prominent. Below the 

 elbow, the hair is thicker than above it. The other hairs on these seg- 

 ments are bent forwards, but not elbowed. On the abdominal segments, 

 the hair from i, and that from ii, are bent backwards, but whilst the one 

 arising from i is curved gradually back, rarely showing a trace of 

 " elbow," the second hair is abruptly kinked, almost to a right angle, 

 and shows a sharp elbow with more or less of a spur. The lower part 

 of this hair (below the elbow) is inclined slightly forwards. It is a 

 shorter hair than the first one. In contrast with the arrangement on i 

 and ii, the hair from iii is kinked forwards, but it is rarely spurred at 

 the bend ; iv and v have their respective hairs bent gently backwards. 

 On the 9th abdominal segment the hair from iii is bent backwards 

 (pi. xiv., fig. 2). 



Description of Plate XIV. 



1. ilelanargia lachesis, first instar, showing bent hairs and position of tubercles 



on tlioracic and first three abdominal segments X 32 

 apioroximately. 



2. „ „ first instar, showing hairs, tubercles, and lines of the 



6th, 7th, 8th, and 9th abdominal segments X 32 

 approximately. 



3. ,, „ first instar, showing position assumed by larvse when 



disturbed x 4 approximately. 



4. Daphnis nerii, first instar : thoracic segments and 1st abdominal, showing 



positions of dorsal tubercles X 20 approximately. 



5. ,, „ lateral view. 



