RHAGASTIS. 479 



band speckled with black ; the inner edge not sharply defined ; 

 a large black stigma and large brown dots beyond cell. Hind 

 wing blackish, the distal halves of the veins and an ill-defined 

 patch near anal angle ochreous. Underside : the dots beyond 

 cell of fore wing large. Hind wing with a conspicuous stigma. 



Antennal scaling pinkish- white, not brown or black on 

 anterior side from near base to near hook as it is in the 

 preceding species, the black distal patch rather long ; basal 

 cilia slightly prolonged in $. Second segment of palpus 

 not narrowed to base ; cavity of first distinct. External 

 row of spines of first protarsal segment simple, with or without 

 a very few additional spines at the base. Expanse : ^76- 

 86 mm., $ 87 mm. 



£. Clasper very broadly rounded at end ; process of harpe 

 slender (fig. 120 G). Penis-sheath (fig. 120 H) with a short 

 paucidentate right process, and a more proximal left process 

 dentate at the proximal and apical edges and bearing also one 

 or two teeth at distal edge, the right process or both sometimes 

 absent. 



Hab. E. Himalayas (Sikkim ; Khasi Hills). We have bred 

 the subspecies in the Khasi Hills at an elevation of about 

 5,000 feet. Larvae and moths are extremely common in the 

 station of Shillong, but we did not find any away from the 

 station itself. 



Egg. — Pale yellowish. 



Larva : — 



1st instar. Pale honey-yellow, with a short straight black 

 horn ; surface of body very smooth and shining. 2nd. instar. 

 Head pale blue ; body green, with a shining and translucent 

 appearance ; segment 5 tumid ; an ocellus on 5 black edged 

 with white ; horn pale blue. 3rd instar. Body dotted with 

 yellow ; a dorso-lateral and a subspiracular stripe on 2 to 4, 

 and oblique stripes on 6 to 11, pale blue ; an ocellus on 5, 

 which is very tumid, pupil pale blue edged broadly with white 

 and narrowly with black ; ocellus shining and conical ; horn 

 dark blue. 4th instar. A dark blue dorsal stripe ; horn down- 

 curved, smooth and shining, clubbed at the tip. 



5th instar. Shape the same as others of the genus. Head 

 dull and smooth. Body shining as though enamelled, in- 

 cluding the ocelli and horn. Horn of medium length, thick 

 at base, proximal half tapering sharply, then cylindrical to 

 near the slightly bulbous tip, bent slightly downwards in the 

 middle. 



Coloration. — Head pale blue. Body pale yellowish in dorsal 

 area, lateral area pale grass-green or bluish-green with a number 

 of short, longitudinal, dark green lines across the secondary 

 rings, turning to bluish dots below the spiracles and on venter ; 

 a narrow, broken, dark green dorsal stripe from 2 to base of 



