158 PIEFJS NAPI. 



back of the ninth segment is a pale square spot, caused 

 by an internal organ showing through ; the trape- 

 zoidal and lateral warts are whitish, but all the other 

 points and dots are black of three or four sizes, 

 arranged on the subdivisions of the segments ; but 

 there are no black spots below the spiracular line ; all 

 the little raised points below that are white. 



This larva is much like that of rajpce, but can be 

 known from it by its lighter green, by the absence of 

 a yellow dorsal line, by the single yellow spot in each 

 segment enclosing the spiracle, and by the absence of 

 black dots below the spiracular line. 



The pupa is fastened by the anal hooks, and a belt 

 of silk round the body ; it is about 20 mm. in length, 

 angulated, the head with a single horn, the back keeled 

 throughout, the keel rising quickly to a blunt point on 

 the thorax, then falling to the level of the abdomen 

 and continued but not prominently to the anal spike, 

 where it bifurcates to form its sides; the wing-cases 

 a little angulated, from below the waist a subdorsal 

 ridge, which begins with two raised points, and goes 

 on to the tail ; the outline of the belly much straighter, 

 the tip of the tongue-case just standing free, the eyes 

 somewhat prominent; anal spike flat, nearly square, 

 the under side of the tip set with curved and clubbed 

 spines. In colour there are two chief varieties, the one 

 of a light tender green, the other of a very pale pink 

 buff; some of the green ones are almost without 

 markings, except that the prominent parts — the horn, 

 dorsal and subdorsal ridges — are dull yellow, and the 

 wing-cases tinted with yellowish ; but the greater pro- 

 portion of the green ones have the prominent parts 

 dull yellow, and a number of spots purple brown vary- 

 ing in depth of tint ; these are placed on the sides of 

 the horn, on the thoracic eminence, three or four large 

 ones on the upper edge of the wing-cases, and a row 

 of small ones at the segmental divisions on the dorsal 

 and subdorsal ridges of the abdomen. There is nearly 

 the same difference between lightly and darkly-spotted 



