254 SPHJNGIDiE. 



with dispersed yellow hair-scales ; disc of wings violet -purple, 

 with little gloss. In specimens from S. India, thorax yellow, 

 with the edges of scales of pronotum black, forming a black 

 collar ; first abdominal tergite black, second black, sometimes 

 with yellow scales, remaining abdominal tergites yellow except 

 for the black anal tuft. The fore wing upper side fades to 

 brownish soon after death. Hind wing underside with a white 

 patch at base. Expanse : ^$, 56-70 mm. 



Hab. E. Himalayas ; S. India ; Burma and China. We 

 have bred it in S. India, where it is not uncommon in Sept- 

 ember and October at the foot of the Western Ghats and in 

 hills with heavy rainfall. 



Egg. — Shortly oval in shape ; surface smooth and shining ; 

 colour pale green. Length 1-2 mm. ; breadth 1 mm. ; height 



1 mm. 

 Larva : — 



]st inslar. Head round, body cylindrical, horn straight and 

 minutely bifid ; head covered with hairs, some simple and some 

 forked ; body with a transverse row of small tubercles on each 

 secondary ring, each tubercle with a forked hair ; colour of 

 head yellowish, body pale green, horn black. 2nd instar. 

 Head triangular, with a short process rising from apex of each 

 lobe ; tubercles and hairs as in 1st instar ; colour of head 

 green, the processes rusty-pink, and a narrow yellow cheek- 

 stripe ; body green with faint oblique stripes. 3rd and 4th 

 instar s. Little change. 



5th instar. Head large, triangular, with rounded vertex, no 

 processes ; clypeus between one-third and one-half length of 

 head, apex acute, basal angles tumid ; false clypeus chevron- 

 shaped ; labrum about half the length of clypeus and slightly 

 broader than clypeus ; ligula kidne}^- shaped, the lobes broadly 

 rounded at ends ; eyes 1 and 2 nearly touching and lying at 

 right angles to 3, 4 and 6, which are nearly in a straight line ; 

 2, 3 and 4 about one eye-diameter apart, 6 about three diameters 

 from 4 ; 5 about one diameter from 4 and three from 6 ; 

 eyes 3 and 4 larger than the rest. Surface of head shining, 

 shallowly rugose, the cheek -stripe set into small tubercles. 

 Body tapering gently from segment 8 to 2 and from 8 to 12, 



2 about as broad as head. Horn short and stout, slightly 

 down-curved, tapering evenly to a sharp point. Surface of 

 body dull ; a transverse row of tubercles along each secondary 

 ring, very minute except on segments 2 to 4 and on the anterior 

 dorsal portion of remaining segments, where they are slightly 

 larger ; supra- and subspiracular hairs visible, the latter having 

 a short stem dividing into nine branches spread fan -wise 

 horizontally. 



Coloration. — Head pale green on face, darker green on rest 

 of head, the two colours separated by a broad white cheek- 



