1878.] 63 



morning I saw it had not fed and was again torpid, and, greatly to my 

 surprise, already showed signs of contraction for pupation as it lay 

 under a small bit of moss, although its previous length had not ex- 

 ceeded five-eighths of an inch, and there on the surface of the earth 

 it became a naked pupa on the 29th, and, by the end of November, 

 had died and shrivelled up. 



The full grown larva measures seven-eighths of an inch in length, 

 and is of a slender proportion, stoutest at the 9th and 10th segments, 

 from whence it tapers gradually forward, though most from the 3rd 

 segment to the head, which is veiy small and narrow, with the mouth 

 extended in front ; it tapers also just a little towards the anal extremity : 

 the 2nd segment rather short, the others moderately well defined and 

 tolerably plump, with the usual transverse wrinkles of the genus just 

 visible : the colour of the head is very pale watery-greenish, with a 

 fleshy tinge, the thoracic segments (generally paler than the rest of 

 the body) are of a light warm pinkish yellow-green, and sometimes the 

 three or four hinder segments are similar, while those of the middle of 

 the body are deeper coloured, of rather stronger green inclining a 

 little to slaty or pinkish, or else miich the same pinkish yellow-green 

 throughout, the sides often deeply tinged with pink : conspicuous on 

 either side of the back is a whitish or faint yellowish- white opaque 

 sub-dorsal stripe, the dorsal vessel of brownish-red continuous on the 

 thoracic segments shows obscurely through the skin of the back as 

 though deep below it, in some parts pulsating between whitish threads, 

 but at the segmental divisions is strongly and clearly marked on the 

 skin as a spear point, or thick elongate spot of dai^k red, often prolonged 

 on one or two of the hinder segments : the anterior margin of the anal 

 legs is pale primrose-yellow, very fine brown trapezoidal dots are 

 sometimes noticeable on the back ; on the belly a central yellowish 

 stripe ; the small flesh-coloured spiracles are situated on the fine tra- 

 cheal whitish thread which shows distinctly through the clear skin, 

 this assimilates well with the internal pale fibres which show through 

 the stem of its food plant. 



The pupa is about seven-sixteenths of an inch in length, of a 

 plump figure, the wing covers rather prominently developed, their 

 rays distinct, the abdomen convexly tapering to a pointed tip, which ia 

 furnished with two small converging spines, the surface has a fine 

 punctate roughness, and the colour is light ochreous-brown, rather 

 shining. 



Emsworth : July I2th, 1878. 



