— 142 — 



Third Larval Stage. — Head as before, mouth and ixilpi 

 yellowish, eyes black. Body yellowish green, darker below, annu- 

 lated and covered with little paler dots. A faint subdorsal line is 

 visible. The horn is minutely spinose as before, pale whitish green, 

 8 mm. long. Length of larva 20 mm. 



Fourth Larval Stage. — Head yellowish green, palpi and 

 mouth paler; eyes black. A pale band before the eyes containing 

 the sub-dorsal line of the body. Width of head about 3.5 mm. 

 Body yellowish green, with many small, round, paler spots. Sub- 

 dorsal line pale, edged above with blackish anteriorly. Horn spinose, 

 pale greenish yellow, 10 mm. long. Spiracles whitish, with a brown 

 spot across the middle. Concealed in the fold on the anterior part 

 of joint 4 is a black, circular, bisected spot, surrounded by a white 

 shade to the subdorsal line, which, as the stage progresses, becomes 

 a round black spot with a white cross in it, surrounded by creamy 

 white and a reddish shade anteriorly. Length of larva 40 mm. 



Fifth Larval Stage. — Mature larva. Head slightly with- 

 drawn below the skin of joint 2, whitish green, obsoletely shagreened. 

 A vertical, pale white band just before the eyes. Eyelets four, in a 

 semicircle, partly brown. Mouth and palpi whitish. Width of 

 head about 5 mm. The body is folded dorsally on the anterior 

 parts of joints 3 and 5. , Each joint, e.xcept 2, 12 and 13, has eight 

 annulets. Caudal horn thick and curved, 5 mm. long, concolorous 

 with the body, but having a slight purple shade at the base. Body 

 light green, thickly covered over the dorsum with short longitudinal 

 ditiuse brow^n streaks, about one on each annulet. These streaks 

 are less numerous on joints 2, 3 and 4, and show a tendency to 

 segregate on these segments into dorsal and sub-dorsal lines. On 

 joints 12 and 13 they are nearly absent. The small round spots of 

 the preceding stage are much reduced in size or obsolete. In the 

 fold of joint 3 is a pale white, or purplish shade, and on joint 4 con- 

 cealed in the fold when the insect is at rest is a round black patch 

 containing a bluish white linear cross, surrounded by a reddish ring 

 and a purplish shade to the sub-dorsal lines. In some specimens 

 there is a faint purplish sub-dorsal line e.xtending to the caudal horn. 

 Spiracles white, nearly co^'ered by a central pale brown spot. Tho- 

 racic feet whitish, abdominal concolorous with the body, the three 

 anterior pair less well developed than the rest. Venter mottled with 

 whitish. Length of larva about 75 mm. 



When not eating, the larva rests on the back of a leaf of its 

 food-plant on one of the large ribs, which it much resembles in color. 

 Its length and slimness also serve to conceal it, as it might be mis- 



