CECHENENA. 491 



Egg. — Broadly ovoid, surface smooth and shining, colour 

 pale ivory. 



Larva : — 



1st instar. Honey-yellow with a long, straight black horn. 

 2nd instar. Head yellow, body green, long and thin, segments 4 

 and 5 tumid, surface shining ; horn brown turning black 

 towards the tip, which is white. 3rd instar. Head and body, 

 except segment 5, green ; 5 very swollen, crimson, ocellus 

 with a green pupil edged with first white, then black ; claspers 

 and venter pale crimson ; horn purple. 4th instar. Head 

 green ; body, except 5 and claspers, a curious shade of yellowish- 

 green ; a narrow dorsal stripe from 2 to base of horn, a dorso- 

 lateral stripe on 2 to 4 and oblique stripes on 6 to 10, all brick- 

 red, the dorso-lateral sometimes continuing to base of horn 

 as a series of dots ; segment 5 and claspers crimson, ocellus 

 with pupil blue in front, reddish dotted with yellow behind, 

 the whole edged with first white and then black ; surface of 

 body and horn smooth and dull : horn long, thick at base, 

 tapering gently to a point, flattened laterally, yellow speckled 

 closely with black. 



5th instar. Head dull and smooth. Body dull and smooth 

 except for the ocelli, which are shining as though enamelled ; 

 segment 5 much swollen, and both 4 and 5 somewhat dilated 

 ventro-laterally. Horn of medium length ; when seen in side- 

 view first increasing in depth, then decreasing, distal third 

 tapering very slightly to a blunt tip ; in dorsal view, laterally 

 flattened, first increasing in breadth, then decreasing, then 

 again increasing to form a slightly bulbous tip ; basal third 

 rising at an angle of about 45° to the body, distal two- thirds 

 then bent sharply downwards, or the horn down-curved 

 throughout its length ; the dorsal and ventral surfaces covered 

 with small rounded tubercles, and the sides longitudinally 

 grooved. 



Coloration. — Head brown with a darker stripe separating 

 face from cheek. Body brown or reddish-brown above the 

 dorso-lateral stripe, with numerous short dark stripes across 

 the secondary rings ; reddish with darker spots below the 

 dorso-lateral stripe ; a pink or reddish dorso-lateral stripe, 

 edged above with dark brown, from 2 to base of horn, broken 

 by the ocellus on 5 and waved dor sally on each segment ; 

 a narrow pale subspiracular stripe on 2 to 4 ; ocellus on 5 

 obliquely oval, pupil dark brown dotted with minute white 

 dots in front half and with large yellow dots in posterior half, 

 the whole edged with bright blue in front, yellow behind, 

 and then narrowly with dark brown ; *a round whitish sub- 

 dorsal spot in the posterior half of each of segments 6 to 11, 

 and the spiracles on the same segments surrounded by an 

 ochreous patch bounded in front by the dark brown oblique 



