252 BRITISH LEPIDOPTERA. 



sides of the anal legs are pale olive-greenish yellow ; the ventral 

 prolegs are blackish on the outside, with greenish inner side, the 

 anterior legs olivaceous-yellow and shining, by the fourth day their 

 colouring had become dingy blackish-olive, with the mouth orange- 

 ochreous, a blackish dorsal line, black tubercular spots, a conical hump 

 on the twelfth segment, a faintly paler spiracular ridge on the thoracic 

 region, and the anterior legs pale-orange, with black bases. After 

 the first moult, the ground colour was of a subdued green, thickly 

 freckled with black atoms ; the head and plate on second segment 

 paler, of sober greenish -yellow, as were also the spiracular ridge 

 on the thoracic segments, and a green backward-slanting stripe on 

 the side of each of the others, and this was still paler and yellower 

 on the eleventh and twelfth, on which last a stripe began at the top 

 of the blunt eminence \ the anal flap was margined with the same 

 colour ; the head was marked with two black stripes on either 

 side j a black dorsal line divided the front plate and continued 

 throughout over the hump as far as the anal flap. After 

 the second moult they were an inch long, the colour of the 

 back was much lighter green, the dorsal line dark green, except 

 at the apex of the hump, where it was black ; the sides were of a 

 fuller green, finely dotted with black. On the back the dots showed 

 greenish, though they had become nearly obsolete there ; the stripes 

 on the head were alternately whitish-yellow and dark green, on the 

 thoracic segments the whitish spiracular ridge was conspicuous, as 

 also, on the other segments, were the side stripes of yellowish-white 

 bordered above with deep green, and these also now not only reached 

 the segmental division in their downward slant, but crossed it, and 

 were thence continued narrowly and obscurely below on the segment 

 following. After the third moult their growth was quick ; two days' 

 feeding increased the length from i inch 3 lines to 1 inch 4^- lines, 

 with greater stoutness also in proportion, the thoracic segments 

 decidedly tapering to the small head ; the relative colouring much as 

 before, paler whitish-yellow-green on the back, with deeper green 

 dorsal line, black at top of the prolonged hump, which was now seen 

 to be slightly divided into two blunt points ; the yellowish side 

 stripes, margined both above and below with deep green, and the 

 sides below them of still deeper green, irro rated with fine black 

 dots, except just where the attenuated continuations of the side stripes 

 could be traced; the bases of the anterior legs black. After the fourth 

 and last moult % by the 26th of June, some were 2 inches 3 lines in 

 length, others, later, as much as 2 inches 7 lines, and bulky in 

 proportion ; the head very small, with the thoracic segments rapidly 

 tapering to it, and retractile, as in Eumorpha (Choerocampa), though 

 to a less extent. The middle of the body is rather the thickest, and 

 the twelfth segment, with its humped elevation, bluntly pointed and 

 slightly divided, slopes backward at an angle to the anal flap ; the 

 ventral and anal prolegs are developed much after the fashion of 

 Smerinthus ; the other segments are lightly subdivided into four nearly 

 equal portions by slight wrinkles, the segmental divisions more 

 strongly denned, especially on the belly. The skin is soft and 

 smooth, glistening on the head, which is green, and has two whitish 

 or yellowish-white stripes beginning on either side, and continuing to 

 the end of the thoracic segments, the uppermost as a subdorsal, and 

 the lower as an inflated, spiracular stripe ; the back is pale opaque 



