180 SCOPULA. DECREPITALIS. 



through, together with the green internal organs along 

 the sides, still form the prevailing colour of the dorsal 

 area; the dorsal stripe is broadly bordered on each 

 side with pale greenish- white ; the spiracles are black ; 

 the head is pale yellow, with blackish ocelli, and brown 

 mandibles, as before. 



When about to moult, from abstinence from food 

 the dark green colouring is lost, and the larva appears 

 almost uniformly bright pale yellow. 



On and about the 31st of July they were moulting 

 for the last time, and on the 5th of August I described 

 them as follows : 



Five-eighths to three-quarters of an inch in length, 

 and rather slender ; head polished, rather broader 

 than the second, but about the same width as the 

 third segment ; body cylindrical, and of almost uni- 

 form width throughout its entire length ; skin semi- 

 translucent. 



Ground colour pale yellow, but the green internal 

 parts at first sight make it appear to be of that 

 colour ; head pale straw-colour ; mandibles brown, 

 and the ocelli still darker brown ; dorsal stripe a 

 median shade of green, edged on each side with a 

 broad whitish stripe; subdorsal stripes also of the 

 same green colour, followed by a pale whitish line 

 above the spiracles, and then by a waved whitish 

 stripe along the spiracular region. Ventral surface, 

 legs, and prolegs of the same median shade of green 

 as the stripes of the dorsal area. Dr. Chapman says 

 the prolegs are terminated by a circlet of two very 

 fine nooks, though on the anal prolegs one side of the 

 circlet is hardly developed ; anterior legs terminated 

 by a very fine brown claw. 



After ceasing to feed, and before spinning up, the 

 colour (as is the case with others in the genus) 

 changed considerably. The ground became bright 

 brownish-yellow, and the dorsal stripe still browner, 

 and the former whitish stripes lemon-yellow ; the 

 green colouring of the earlier stages had entirely dis- 



