82 SPHXNGID<E. 



"-$. Vaginal plate (fig. 14 B) much folded in front of the 

 large vaginal cavity ; the post Vaginal part smooth, rather 

 stronger chitinized than the proximal part " (Roths. & Jord., 

 1903, p. 99). 



Hab. E. Himalayas. One Indian species. 



9. Apocalypsis velox Butler. (Fig. 14,'^, A, imago, B, genitalia ; 

 PI. XIII, figs. 3, 4, larva). 



Apocalypsis velox, Butler, 1877 A, p. 641 (Darjeeling) ; Hampson, 

 1892, p. 107, fig. 62 (<J) ; Roths. & Jord., 1903, p. 100 ; Seitz, 

 1928, p. 530, t. 60 d. 



Imago. — <^$. Head dark brown ; thorax dark brown, with 

 pale paired lines on each side of vertex ; abdomen dark brown, 

 with a series of black dorsal streaks and black segmental lines 

 with white specks on them. Fore wing dark brown ; white 

 spots at extremities of veins, which are pale ;•,* pale obliquely 

 waved antemedian double lines ; a curved postmedian pale 

 band formed of three conjoined lines ; a yellow streak from 

 the apex continued as a very dentate line to outer angle. 

 Hind wing dark brown, with traces of lines near anal angle ; 

 inner margin yellowish ; cilia chequered yellowish and brown. 

 Underside of both wings brown, with median and postmedian 

 indistinct lines. Expanse : 136 mm. 



Hab. E. Himalayas (Sikkim ; Khasi Hills). Rare and 

 very local. 



Egg. — Shortly ovoid ; surface smooth and shining ; colour 

 pale yellowish-green. Length 2-25 mm. ; breadth 2 mm. 



Larva : — 



1st instar. Head round, body cylindrical ; horn long, 

 straight, tip broadly bifid. Surface of head and body smooth 

 and shining ; the whole horn, including the bifid tip, set 

 densely with the most minute hairs, each rising from a very 

 small tubercle ; anal flap with a pair of mid-dorsal tubercles. 

 Colour of head and body yellowish-green ; horn black. 

 2nd instar. Shape of head and body unchanged, but the long, 

 thin, bifid horn rises vertically from a shining cone, and then 

 bends downward ; long spine-like tubercles present on all 

 segments of body ; those on 3 to 11 longer than the rest, 

 and some on 2, 3, 4 and 12 bifid ; small, scattered, setiform 

 tubercles on head and horn ; surface of head, body and horn, 

 including the tubercles, smooth. Colour of head pale blue, 

 tubercles paler blue ; body pale orange, with a pale blue 

 rectangular mark above each spiracle and another behind 

 each spiracle on 5 to 11 ; subdorsal tubercles white, lateral 

 tubercles blue ; those on anal flap and claspers black. 

 True legs pale blue, prolegs pale green ; horn blue with black 

 tubercles. 3rd instar. Very little change, but the colour of 



