SCOPULA UECREPITALIS. 179 



aud again produced little change in the appearance of 

 the larva. When about to moult, the eye-spots present 

 a curious aspect, as black spots on the second segment. 

 The disposition of the tubercles and hairs can now be 

 determined with some difficulty ; the dorsal tubercles 

 are placed nearly squarely rather than in the usual 

 trapezoidal manner ; the bristles of the anterior pair 

 are directed forwards and inwards, of the posterior 

 backwards and outwards, and of the lateral or super- 

 spiracular, forwards and downwards ; all looking 

 depressed to the larva instead of standing off perpen- 

 dicularly to the surface. 



The third moult occurred about the 15th, one as 

 late as the 18th of July. 



My larvae reached me on the 17th of July, and were 

 then about a quarter of an inch long, transparent, 

 pale yellow, but- the dark green alimentary canal, with 

 the green internal organs generally, gave it a strong 

 green appearance ; head very pale yellow tinged with 

 pink; eye-spots black; jaws pale brown. 



The fourth moult occurred on the 20th of July. 



By the 28th of July a length of about five-eighths 

 of an inch had been attained ; it was slender, and of 

 nearly uniform width ; the skin of the same glossy 

 transparent texture as before. The dorsal, subdorsal, 

 and lateral tubercles are raised bosses, surrounded by 

 radiating lines or plaits which encroach on the dorsal 

 bosses, but not on the subdorsal ; in some respects the 

 tubercles from these plaits remind one of the summit 

 of a Noctua egg ; the hairs of the anterior pair of 

 dorsal tubercles are directed forwards and inwards, of 

 the others outwards and a little backwards ; the 

 tubercles of the third and fourth segments are the 

 same as the others, but the second pairs are very 

 small ; the sub-spiracular tubercle is a compound one 

 of some length, and carries two bristles, one directed 

 forwards, and one backwards, both rather downwards. 



The ground colour is pale yellow, but the very 

 conspicuous dark green alimentary vessel showing 



