OXYAMBULYX. 123 



brown, paler on wing-cases and on the front bevels of segments 

 9 to 11, the spiracles black. Length 52 mm. ; breadth 13 mm. 

 Habits. — Food-plant : Xylia xylocarpa Taub., family Legu- 

 minosae. We have never found the eggs. The larva feeds 

 chiefly at night ; it rests in the same position as others of the 

 genus, but sometimes with the head thrown back. The 

 moths have never been caught at light nor seen feeding on 

 flowers. We did not succeed in attracting wild males to 

 bred females. 



22. Oxyambulyx lahora (Butler). (Fig. 23 J-L, genitalia ; 

 fig. 25, g holotype). 



Ambulyx lahora, Butler, 1875, p. 251 (N.W. Himalayas) ; id., 1877 A,. 



p. 580, pi. xciii, fig. 9. 

 Oxyambulyx lahora, Roths. & Jord., 1903, p. 198; Seitz, 1928, 



p. 533. 

 Ambulyx semifervens, Hampson, 1892, p. 78 (non Walk.). 



Imago. — $. Resembling maculifera, more reddish in tint. 

 Abdomen with dorsal line, which is dilated to a patch on the 



Fig. 



-Oxyambulyx lahora (Butl.), <$ holotype. 



eighth tergite. Fore wing above with large sub basal costal 

 patch, submarginal line vestigial, with grey border ; hind wing- 

 more distinctly dentate, margin chestnut, not black, few 

 speckles. Underside of body and wings rufous-tawny like the 

 upperside of the hind wing, lines on disc of fore and hind wing 

 slightly deeper in tint, no distinct speckles, no submarginal 

 line on fore wing, grev marginal area broad. Expanse : 

 ^98-108 mm., $ 108 mm. 



Eighth abdominal sternite rounded. Tenth tergite (fig. 23 J) 

 with dorsal apical surface more slanting than in maculifera. 

 Harpe (fig. 23 K) similar to that of sericeipennis in the sub- 

 mesial ridge, consisting of two dentate lamellae which are 

 together produced into a cone of which the tip curves ventrad ; 

 distal process spoon-shaped as in maculifera, liturata and 

 substrigilis substrigilis, the process less broad than in these 



