336 JOURNAL, BOMBAY NATURAL HLST. SOCIETY, Vol. XXII. 



however, that it is " a slightly differentiated form scarcely established, even 

 as a local race, as yet." 



The insect existing in North Kanara District of the Bombay Presidency 

 is not taprobana, but hijypo ; many hundreds of specimens have been bred, 

 the majority of them approaching very close to taprobana, but not quite 

 agreeing with the description. Specimens bred from larvse fed on fairly 

 old leaves have the veins on underside of hindwing concolorous with the 

 ground-colour. The males can always be distinguished from the females 

 by the sharp apex to forewing. 



Egg. — Cylindrical from base to three-quarters the way up, whence it 

 narrows gradually to the truncated end, 11 or 12 longitudinal ribs which 

 are finely transversely striated ; half the number reaching the top where 

 they appear as small teeth, forming a crown ; the interspaces between the 

 ribs are also striated transversely and very finely. The colour of the egg 

 is very light green when laid but quickly changes to orange. L : l"2mm ; 

 B: 0-6mm. 



Larva. — (PI. 1, fig. 18). — The body is subcylindrical, narrowing more to 

 anal end than to head ; the anal end overhangs the anal claspers and is 

 narrowly and shortly bifid, the points thus formed being conical and 

 covered with conical, colourless, translucent tubercles. Head round, 

 rather thick, somewhat narrower than segment 2 when the larva is fully 

 grown ; studded with shiny, black, pointed, conical, tubercles, each sur- 

 mounted by a short seta or hair, these set«, or some of them, often 

 carrying a single globule of transparent liquid at the point ; some fine, 

 white, longer hairs at base round jaws ; colour yellow-green. Surface of 

 body thinly impressed-lined transversely, 7 parallel lines to each segment, 

 the interspaces between each two being occupied by a single row of shiny 

 black tubercles, each row reaching down each side as far as the subspira- 

 cular yellow line or narrow band ; the tubercles on head, segments 2, 3, 4 

 being larger than the rest ; the body is, besides, covered somewhat 

 profusely with minute, erect, fine hairs, longest in subspiracular region 

 where they are less numerous and lighter in colour. Spiracles rather large, 

 oval, white, situated on the upper margin of the subspiracular yellow 

 band. Colour is dark yellowish-green ; there is a yellow, dorsal line 

 and subspiracular, yellow, narrow band ; ventrum light watery green. 

 L: 30 mm. ; B : 4 mm. 



Pupa. (PI. 1, fig. 18a.) — -Of the type of Ilupliina ; head tucked under 

 segment 2, that is, nearly quite hidden under it from above ; with a long,, 

 laterally compressed snout, which is much turned up and attenuated at 

 tip. Segment 2 is triangular seen from above, convex and carinated in the 

 dorsal line ; the dorsal line produced into two short points anteriorly, 

 these points close together and produced over the base of the snout ; the 

 lateral posterior corners of the segment produced into, each, a tonguelike 

 process of circular transverse section which embraces the shoulder and 

 lies along it : this is very characteristic. Thorax high, convex, humped, 

 carinated in middle along dorsal line, the side view thus being triangular, 

 and this apex is situated just behind a line joining the shoulder-points ; 

 this carination. extends to segment 4, but not beyond it ; the shoulders 

 are slightly angled and the pupa is broadest at them ; segment 5 dorsally 

 somewhat convex, segment 6 dorsally flat and this flat part is produced 

 out laterally into a narrow ledge overhanging the wing-surfaces and em- 

 bracing segment 5 slightly with its lateral corners, segment 7 is similar, 

 the ledge being produced out at front margin into a triangular, slightly 

 up-curved tooth of which the base extends, broadened, to the middle of 

 the segment, the end of the tooth being narrowed and conical. The ledge of 

 segments 7 and 8 looses itself in addomen at hinder margin of segment 8. 



