226 SPHINGIDiE. 



Hah. E. Himalayas (Khasi Hills), where we obtained eggs 

 and larvae in forests with heavy rainfall at an elevation of about 

 ■5,000 feet. Larvae were plentiful locally in the rainy season. 



Egg. — Elongate-oval in shape, surface smooth and mode- 

 rately shining, colour pale bluish-green when first laid, reddish- 

 brown markings developing later. These markings take the 

 form of a narrow reddish -brown stripe running round the 

 lower portion of the egg roughly parallel with the line of 

 attachment to the leaf, and broken at each end of the egg ; 

 a broad irregular stripe, of a paler reddish-brown, across the 

 top, parallel with the long axis but slightly on one side of the 

 centre line ; a short, broad stripe, of the same colour as and 

 parallel with, the longer stripe, on the opposite side of the 

 centre line. 



Larva : — 



1st instar. Head round, very large, pale ochreous in colour ; 

 body cylindrical, rather long for its diameter, the anterior 

 half orange-red, posterior half ochreous ; horn of medium 

 length, curved downwards, black, tip bifid, with a bristle on 

 each point. 2nd to 4th instar s. Very similar in shape and 

 colouring to full-fed larva, but head relatively shorter, with 

 short processes, and horn bifid but not flattened. 



5th instar. Head elongate-triangular, the apex of each lobe 

 produced upwards, these upward extensions closely appressed 

 and together forming a blunt point ; the processes of the 

 earlier instar s represented by a minute, smooth tubercle 

 on the apex of each lobe ; true clypeus one -quarter length 

 of head, apex acute, basal angles rounded and tumid ; false 

 clypeus a narrow strip on each side of true clypeus, not 

 reaching apex of true clypeus ; labrum short, arched strongly 

 backwards between basal tumidities of clypeus ; ligula con- 

 sisting of two long lobes broadening distad, completely covering 

 mandibles ; eyes with line joining 1 and 2 at right angles to 

 the straight line joining 3, 4 and 6 ; all these eyes nearly 

 equidistant; 5 forming an equilateral triangle with 4 and 6 ; 

 1, 2 and 5 smaller than 3, 4 and 6. Surface of head dull, 

 covered with small tubercles. Body long and thin, diameter 

 of segments 2 and 3 only half length of head, hind segments 

 increasing gradually to 8, then decreasing slightly to 12. 

 Horn long, gently down-curved, flattened laterally, bifid, 

 the arms long and thin ; anal flap and points of claspers 

 much produced backwards. Surface of body dull ; a trans- 

 verse row of small, pointed tubercles along each secondary 

 ring. Horn with a fringe of pointed tubercles on upper and 

 lower edge, those on lower edge spine -like ; small tubercles 

 on prolegs, anal flap and claspers. 



Coloration. — Head pale green, apex of each lobe reddish ; 

 a broad stripe, formed of small black tubercles, from near apex 



