RHYNCHOLABA. 463 



localities in India and in Burma. Very common and widely 

 spread. 



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

 bright green. 



Larva : — 



1st instar. Yellow with a straight black horn. 2nd instar. 

 Head yellow, body bluish-green ; a dorso-lateral ocellus on 

 5 blue above, black below ; horn long, straight, shining black 

 with base orange, tip white and translucent. 3rd instar. 

 Segment 5 tumid, ocellus blue with black pupil, the whole 

 edged with black ; smaller ocelli on 6 to 11, white edged with 

 black ; horn straight, long and tapering, translucent green 

 with base orange, a black ring near tip, tip white. 4:th instar. 

 Green form : head yellowish-green, body pale green, suffused 

 with yellow above the spiracles, dotted with white below 

 them ; ocellus on 5 large, obliquely oval, the long axis running 

 up and back, pupil black in front shading to deep blue and then 

 mustard-yellow, the yellow obscurely dotted with white ; 

 the pupil edged narrowly with white, olive -green and dull 

 yellow ; ocelli on 6 to 11 much smaller, obliquely elongate- 

 oval, blue edged narrowly with dark green. Horn long, gently 

 up-curved, basal third black with reddish-orange base, central 

 third translucent greenish- white, end third black with the tip 

 greenish-white ; the orange base smooth and shining, rest 

 minutely tuber culate and shining. In the dark- coloured 

 form (PI. VI, fig. 8) the green is replaced by ochreous- 

 chocolate, markings the same as in the green form. 



5th instar. Head dull and smooth, small, nearly round, 

 slightly higher than broad ; true clypeus about one -half length 

 of head, equilaterally triangular ; false clypeus with acute 

 apex reaching to two-thirds length of head ; labrum one-half 

 as long as clypeus, longitudinally corrugate ; ligula kidney - 

 shaped ; mandible with cutting-edge strongly toothed ; eyes 

 1 to 4 equidistant in a gentle curve, 6 in line with 3 and 

 4, and slightly further from 4 than 4 is from 3 ; eye 5 forming 

 an isosceles triangle with 4 and 6, about twice as far from both 

 as 4 is from 3. Body dull and smooth, of the same shape 

 as those of the genus Theretra, segments 4 and 5 swollen. 

 Horn very short, stout at base, tapering sharply to a point, 

 slightly down- curved, surface shining, covered with minute 

 tubercles. 



Green form (PL VI, fig. 9) : head rich grass-green ; labrum 

 green, ligula whitish ; basal segment of antenna green, other 

 segments honey-yellow ; mandible green, tip dark reddish- 

 brown ; eyes brown. Body with segments 2 to 5 pale bluish- 

 green, rest of body rich pale grass-green above the dorso-lateral 

 stripe, pale bluish-green with short, dark green or brown 

 longitudinal stripes across the secondary rings below it ; 



