70 



SPHINGID^l. 



oblique slightly bent postmedial lines, the outer one obsolescent ; 

 another postmedial line, curved from the costa to vein 2, then 

 recurved upwards and inwards and enclosing a red-brown spot 

 surrounded by an indistinct line ; two curved submarginal lines. 



Fig. 42. — Polyptychus dyras, S . \. 



Hind wing red-brown, the area at anal angle paler, with two red- 

 brown spots on it. Underside of fore wing with only the lines 

 on the outer half present ; hind wing with two postmedial straight 

 lines and two submarginal curved lines. 



The darkest form is cristata from Sikhim, in which both wings 

 are suffused with brown and the lines on the fore wing are 

 straighter and more oblique, the uppermost of the anal spots on 

 the hind wing is obsolete, as also is the outermost of the two 

 postmedial lines on the underside of both wings ; in piceipennis, 

 from Japan, the fore wdngs have an olive tinge and the lines are 

 more bent, the hind wing is dark, but both anal spots are present 

 as also traces of the outer postmedial hue ; rectilinea is a small 

 dark form with the spots at anal angle conjoined ; ceylanka = 

 fuscescens = oriens = silJietensis is larger than the last and rather 

 paler ; in sperchius, from Japan, the fore wing is clouded in parts ; 

 gigcis is a large form, the fore wing pale, the hind wing dark ; 

 dyras = sinensis = javanica is again rather paler and smaller ; 

 indieus is a small pale starved specimen ; the palest form albicans, 

 from the N.W. Himalayas, has the spots at the anal angle, and in 

 some specimens the lines, almost obsolete. 



Exp. 94-114 millim., (gigas) 150 millim., (indieus) 60 millim. 



Larva blue-green with short white granular spines ; lateral 

 oblique streaks on 5th-10th somites ; 4th somite with a black- 

 ringed white ocellus ; horn yellow. 



