340 SPHINGID^]. 



half, almost pointed, longitudinally grooved along dorsal edge ; 

 harpe broad, densely beset with long spines distally, these 

 spines flat upon the harpe except some near the apex. Penis- 

 sheath without armature, or with short transverse subapical 

 ridge, bent proximad. 



Hab. E. Himalayas, China and Malaya. We have bred 

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

 The larvae are very rare in some seasons, but in one season 

 were extremely common. 



Larva : — 



Final instar. Head nearly round ; true clypeus more than 

 half length of head, apex narrowly rounded, basal angles not 

 rounded ; false clypeus forming a gothic arch over apex of 

 true clypeus, apex nearly reaching vertex of head ; labrum 

 about one-third length of true clypeus ; ligula kidney-shaped ; 

 mandible with the cutting-edge toothed ; eyes arranged in rather 

 an unusual manner, with 2, 3, 4 and 6 in a straight line, about 

 one eye- diameter apart ; 1 slightly outside this line, 5 slightly 

 further back than 4 and just over one diameter from 4, 1 being 

 the same distance from 2 as 5 is from 4. Surface of head dull 

 and smooth ; labrum minutely, longitudinally lined. Body 

 dull and smooth, nearly cylindrical, tapering very slightly 

 from segment 5 frontad. Horn short, straight, thick at base, 

 and tapering evenly and sharply to a blunt point ; covered 

 with small tubercles directed distad. 



Colour very variable. Head and body may be green, 

 yellowish-green or greyish-yellow in the pale- coloured forms ; 

 reddish, chocolate or very deep brown in the dark-coloured 

 forms ; in the pale-coloured forms the head is immaculate ; 

 body with a more or less distinct, reddish-brown dorso-lateral 

 stripe widening into dorsal patches on the posterior half of 

 the body ; a broad, well-defined, white subspiracular stripe 

 from segment 2 to 14 ; a transverse row of white dots along 

 •each secondary ring. In the dark-coloured forms the head has 

 a pale stripe from vertex to base of antenna ; the body has 

 the white subspiracular stripe and sometimes a black dorsal 

 stripe with a pale stripe on each side of it on segments 2 and 3 ; 

 venter paler. Spiracles white with a black or dark-coloured 

 band across the middle, and a narrow, raised, black rim. 

 Length 40 mm. ; breadth 6 mm. ; horn 6 mm. 



Pupa. — Stout in build, head narrowing frontad and then 

 rounded ; antenna slightly longer than fore leg ; a large 

 coxal piece. Surface shining ; head, thorax and wing-case 

 very superficially, irregularly lined ; abdomen sparsely, coarsely 

 pitted ; segment 9 with nine parallel ante-spiracular ridges. 

 Spiracle of 2 a narrow slit, the front margin of 3 slightly 

 thickened behind it; other spiracles oval, flush. Cremaster 

 a short cone with a blunt tip. Colour honey-yellow ; head 



