322 SPHINGIDJE. 



Larva : — 



1st instar. Head broad and round ; body nearly cylindrical 

 and of smaller diameter than head ; horn very long, straight, 

 bifid, the two arms short, conical, diverging at right angles to 

 each other, each arm bearing a small hair ; surface of the 

 head and body smooth and dull, horn shining, smooth for the 

 distal half, the rest tuberculate ; the usual main hairs present, 

 and horn covered densely with minute hairs with two or three 

 branches ; colour of head and body very pale honey- colour, 

 horn black. 2nd instar. Shape as in the first instar ; surface 

 of head and body dull ; head and body, in addition to the main 

 hairs, closely covered with forked hairs ; head dark green; 

 body pale green dotted with white ; a large black dot on front 

 margin of segment 6, and small dots on front margins of 

 5, 7 and 8, all on the dorsal line ; a very sharply defined 

 dorso-lateral white stripe from middle of 2 to base of horn ; 

 horn black, the sides of base green. 3rd instar. Body of greater 

 diameter than head ; horn of medium length, slightly up- 

 curved, bifid ; surface of head and body dull and smooth ; 

 forked hairs as in the 2nd instar ; colour of head dark green ; 

 body paler green dotted with white ; black dorsal spots as in 

 the 2nd instar ; the dorso-lateral stripe narrow and faint on 

 the anterior segments, broad and well defined on the posterior 

 segments ; a dark, narrow dorsal stripe from segment 7 to 

 base of horn ; basal half of horn fuscous-green, distal half 

 first pale yellow, then black The spiracle on 5 larger than the 

 rest and surrounded by a narrow black circle. 4dh instar: 

 Head small and round ; body tapering sharply frontad from 

 segment 5 ; horn straight, minutely bifid ; colour as in 3rd 

 instar except that the dots are yellow instead of white ; 

 dorso-lateral stripe yellow on 11 and 12 ; some indistinct 

 darkish oblique stripes ; spiracles white edged with black 

 on each side, that on 5 larger than the rest and surrounded 

 by bluish, outside which is a narrow circle of black ; horn 

 green, base paler and tip black. 



5th instar. Head round ; true clypeus over one-third 

 length of head, equilaterally triangular ; false clypeus 

 reaching to one-half length of head, apex very broadly 

 rounded ; labrum half as long as clypeus ; ligula rather 

 longer than labrum and not quite so broad, kidney- shaped, 

 with narrow lobes ; eyes with 1 and 2 forming an angle of 

 100° with 3, 4 and 6, which are in a straight line ; 1, 2 and 3 

 closer together than 3, 4 and 6 ; 5 twice as far from 6 as 4 is 

 from 6 and three-quarters this distance from 4. Surface 

 of head dull, covered with minute, shining, conical tubercles ; 

 labrum longitudinally furrowed. Body tapering sharply 

 frontad from segments 5 to 2, the latter being of about the same 



