ACOSMERYX. 293 



<lorso- lateral stripe, pale blue with short darker lines below 

 this stripe ; a dor so- lateral stripe from 2 to base of 

 horn, narrow and white on 2 and 3, broader and pale 

 yellow on 4 and 5, then white to base of horn, and edged 

 narrowly with orange above on 7 to 11 ; a narrow, white, 

 subspiracular stripe on 2 and 3, becoming broader and yellow 

 and outlining the upper edge of the flange on 4 and 5, 

 turning upwards on 5 to form an oblique stripe ; pale yellow 

 oblique stripes on 5 to 11 ; horn pale purple dotted with 

 darker purple ; legs with basal and end-segments flesh-colour, 

 median segment dark brown ; dark purple patches on the 

 body above the bases of the legs, increasing in size back- 

 wards, and extending along the lower edge of the flange on 

 4 and 5 ; prolegs bluish, ankles pale yellow, feet brown ; 

 clasper bluish ; anal flap edged broadly pale yellow. Spiracles 

 deep orange, central slit black. 



There is also a dark- coloured form of the larva in which the 

 head and segments 2 and 3 are pale brown, and the ground- 

 colour of the rest of the body pink, with markings as in the 

 green form. Length 100 mm. ; breadth 13 mm. ; horn 

 8 mm. 



Pupa. — Shape as in other Acosmeryx pupae, the hind margin 

 of segment 11 deeply undercut. Surface shining, shallowly but 

 coarsely pitted on segments 4 to 7 and 12 to 14 ; 2 finely, irregu- 

 larly, longitudinally striate ; 8 with a patch behind the spiracle, 

 finely, regularly, transversely striate ; front bevels of 9 to 

 11 finely pitted ; rest of pupa smooth. Spiracle of 2 covered 

 by a narrow transverse lobe projecting from the front margin 

 of 3, the front edge of the lobe sharply raised ; remaining 

 spiracles shortly oval, flush, the edges of the central slit raised. 

 Cremaster small, basal half bulbous, distal half a cylindrical 

 shaft ending in two small hooks ; dorsal surface of basal half 

 honeycombed, shaft smooth. Colour of dorsum dark brown, 

 sides and venter paler brown, abdomen marked with short 

 darker stripes, and pits dark brown ; a pale brown patch in 

 front of eye ; hind bevels of segments 8 to 11 dark brown ; 

 spiracles black ringed by dark brown, cremaster nearly black. 

 Length 55 mm. ; breadth 15 mm. ; cremaster 2 mm. 



Habits. — Food-plants : Vitis Linn., family Ampelidese, and 

 Saurauja, family Ternstrcemiaceaa. In the resting position 

 the larva throws back the head and anterior segments in 

 a sharp curve, the head held so that the face is in the same 

 plane as the dorsum of segment 2, the true legs pressed close 

 against the body, the flanges laterally dilated. When alarmed 

 the head and first two segments of the body are retracted into 

 segment 4, segments 4 and 5 being puffed out and the flanges 

 further dilated. The moth has not been observed except 

 when bred, and it does not appear to be attracted by light. 



