292 sphinghxe. 



grey submarginal band from SC 5 to tip. of SM 2 , nearly straight, 

 not undulate. Expanse : <£$, 86-112 mm. 



$. Antenna long. Tenth sternite with parallel sides. 

 Process of harpe (fig. 74 A) rather acute distally, resembling 

 a hand with the thumb lying against the forefinger and the 

 other fingers curved back and upwards. Penis-sheath 

 (fig. 74 B) : left lobe shorter than in all the other species. 



$. Vaginal plate resembling that of anceus subdentata. 



Hob. W. and E. Himalayas, China and Japan. We have 

 bred it in both W. and E. Himalayas, where the larvae are 

 common during the monsoon months. 



Egg. — Spherical ; surface smooth and shining ; colour deep 

 rich green, turning whitish before hatching. 



Larva : — 



1st instar. Horn long and straight ; head and body green, 

 horn black. 2nd instar. Segment 2 as narrow as head, body 



Fig. 75. — Acosmeryx naga (Moore). 



tapering sharply from 5 to 3 ; horn long and straight ; head 

 and anal segments yellow, body green dotted with white ; 

 the spiracle on 5 lying in a small black spot ; a yellow sub- 

 dorsal stripe from 2 to base of horn ; horn reddish at base, 

 then black with white tip. 3rd and 4:th instar s. A ventro- 

 lateral flange develops on segments 4 and 5 ; a yellow sub- 

 spiracular stripe from 2 to just behind the spiracle on 5. 



5th instar. Shape of head and body as in others of the genus ; 

 horn stout, down- curved, of medium length, tapering evenly 

 to near tip, where it tapers sharply to a point. Surface of head 

 moderately shining and smooth ; body dull and smooth ; 

 horn shining and smooth. 



Coloration. — Green form (PI. IV, fig. 1). Head grass-green, 

 with a narrow pale yellowish subdorsal stripe and a broader 

 stripe of the same colour separating face from cheek. Body : 

 segments 2 and 3 grass-green with short darker stripes ; 

 rest of body bluish-green, mottled with yellow above the 



