380 SPHINGIDiE. 



distally and dilated basad at hind margin ; first and second 

 discal lines curved costad in front, concave between R 1 and 

 hind margin, the first thin, the second heavier, interspace 

 not quite filled in, the lines remaining quite distinct, the 

 second dilated distad behind R 1 till reaching post-discal 

 line, this spot-like dilation prominent ; R 1 in front of it 

 grey, bordering a sharply defined post-discal costal grey 

 patch ; subapical spot SC^-R 1 prominent, while the space 

 SC 4 -SC 5 in front of it is more or less grey. Black border 

 of hind wing convex, more or less angulated near M 1 . Under- 

 side of palpus, middle of breast, and a mesial patch on first 

 abdominal sternites greyish- white, rest of abdomen dull 

 burrt-umber brown ; tail rather darker ; wings like abdomen, 

 basal central area of fore wing darker, distal border duller, 

 darker brown ; bases shaded with yellowish -buff, yellow 

 abdominal area sharply defined, about 1*5 mm. short of tip 

 of SM 2 . Expanse : $ 50-58 mm., $ 60 mm. 



$. Tenth tergite rather broad, rounded- truncate, flattened 

 at end ; sternite spatulate, upperside elevated in mesial 

 line, apical margin acuminate. Clasper with friction-scales ; 

 harpe incrassate distally, obtuse, often with a subapical 

 lateral tuber culate hump. 



Hab. S. India to China, Malaya and the Philippines. We 

 have bred the species in S. India, where larvae are found in 

 evergreen forests, above 1,000 feet elevation. 



Egg. — Nearly spherical ; surface smooth and shining ; 

 colour pale yellow. Length 1*5 mm. ; breadth 1*4 mm. 



Larva : — 



1st instar. Horn long, straight, bifid ; head, segment 2 and 

 anal segments behind base of horn honey-yellow ; rest of body 

 blood-red ; horn shining black. 2nd instar. Head yellowish, 

 segment 2 and anal segments pale yellow ; rest of body dark 

 maroon-red ; horn shining black. 3rd instar. Similar to 

 above, but paler ; body dotted with white ; a dark dorsal 

 stripe and a narrow whitish spiracular stripe. 4zth instar. 

 Horn very long ; head opaque pale green ; body translucent 

 pale green, dorsum suffused with yellow and in some cases 

 with touches of maroon-red, the whole dotted with white ; 

 a dull olive-green dorsal stripe ; horn with basal half shining 

 black, distal half green with black tip, the whole covered 

 with black tubercles ; legs shining black, prolegs with a shining 

 black band. 



5th instar. Head round ; clypeus with apex acute, not quite 

 one-half length of head ; false clypeus with apex acute, 

 reaching a little more than one-half length of head ; labrum 

 one -half length of clypeus ; ligula as long as labrum but 

 narrower, kidney-shaped ; cutting-edge of mandible strongly 

 toothed ; eyes with 3, 4 and 6 in a straight line, the line 

 joining 1 and 2 forming an angle of 105° with that line ; 



