HIPPOTION. 423 



Hob. E. Himalayas, S. India, Ceylon and Burma to 

 Malaya and S. China. We have bred it in the E. Himalayas 

 (Khasi Hills) and in S. India and Burma. It is very common 

 in the Khasi Hills at an elevation of about 5,000 feet, and 

 seems to prefer wet forest areas to dry open country. 



Larva : — 



1st instar. Yellow, with a straight black horn of medium 

 length. 2nd instar. Green, with small ocelli on segments 5 

 and 6. 3rd instar. Head and segments 2 and 3 green, rest 

 of body green dotted with white ; an ocellus on 5, yellow 

 edged above and below with black ; a slightly smaller ocellus 

 on 6. white edged above and below with black ; a white 

 dorso-lateral stripe from 4 to base of horn ; horn straight, 

 brown with red base. 4JJi instar. Head and body pale green, 

 dotted with white except on head, segment 2 and anal flap ; 

 ocellus on 5 longitudinally oval, pupil yellow edged broadly 

 above with black, below by two black lines ; on 6 the pupil 

 pale pink, edged below b}^ a single line ; horn long, slightly 

 up-curved, tip truncate, black with the tip livid white. 



5th ■ instar. Head round ; clypeus equilaterally triangular, 

 basal angles slightly rounded, one-half length of clypeus ; 

 apex of false clypeus widely arched, reaching to two-thirds 

 length of head ; labrum one-half as long as clypeus, tapering 

 slightly frontad ; ligula as long as labrum and nearly as broad 

 as long, kidney-shaped, with the lobes narrowly rounded ; 

 mandible with cutting-edge toothed ; eyes 1 and 2 at right 

 angles to the straight line joining 3, 4 and 6 ; 1 rather more than 

 one eye -diameter from 2 ; 2, 3 and 4 about one diameter apart ; 

 6 as far from 4 as 1 from 2 ; 5 and 4 at right angles to 4 ; 6 and 5 

 as far from 4 as 4 is from 6 ; 3 and 4 larger than the rest. 

 Surface of head dull and smooth. Body dull and smooth, 

 with segments 4 and 5 not much swollen. Horn straight, 

 of medium length, thin, tapering evenly -do a blunt point ; 

 minutely tuber culate. 



Green form (PI. V, fig. 7) : head and body grass-green ; a dorso- 

 lateral line of small ochreous spots on segments 3 and 4 ; a large 

 semicircular ocellus on 5, the chord dorsad, the pupil black 

 with a pure white band along the top, edged broadly above, 

 narrowly elsewhere with yellow, the whole enclosed by a black 

 fine ; a smaller similarly shaped ocellus on 6, pupil maroon-red 

 edged with yellow above, the whole enclosed by a black line ; 

 a dorso-lateral stripe from the hind edge of this ocellus to 

 base of horn, ochreous on the front half of each segment, 

 pale yellowish on the hinder half ; above and below this, 

 down to the supra-spiracular line, a number of short, narrow, 

 dark green stripes across each secondary ring ; just above the 

 stripe there are two blue dots near the front margins of 7 to 11; 

 a narrow white subspiracular stripe with some white dots round 



