682 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. If. 



that the young larva may have plenty of soft leaf tissue near at hand* 

 Fig. VIII. shows an egg on the back of a leaflet of Millingtonia 

 hortensis. 



11. Larva. — On emerging from the egg, the larva is pale-reddish or 

 greenish -yellow in colour with a black head and dorsal black mark on 

 the first somite. It is then y^th of an inch long and is active from 

 the first. The colour of the dorsal surface gradually darkens and 

 becomes greyish-green, the under surface being paler, the head and 

 dorsal band on the first somite being jet black. 



12. When about a week old, a change of skin takes place, after 

 which the appearance of the larva entirely changes, the colouring now 

 being practically that of the mature larva, which then remains but little 

 changed until the end of the larval existence. The general colour is 

 now dark purple-grey to black above and bright yellow to greyish-green 

 below. The larva taken as the type, in Hampson's Moths, is described 

 as follows : " With a few short hairs ; dark purple-grey above, olive- 

 green below, with dorsal and lateral white lines, a subdorsal series of 

 minute white dots and rings, a series of black dots on lateral line ; head 

 and first somite black." Fig. V. shows the dorsal view and Fig. VI. 

 the side view of the larva which appears to have been taken as the type. 



13. A reference to the illustration (Fig. V.) will show that a pale, in- 

 distinct line runs along the centre of the back, which I will designate (a) 

 and that there are two clear white dorsal lines, one on each side 

 of the central line (a) which we will call (ce). Below these dorsal lines 

 there is a clear white lateral line, running along each side of the larva, 

 just above the junction of the upper grey and lower yellow colour as 

 shown in Fig. VI. These lateral lines may be called (dd). The spaces 

 between the central line (a) and dorsal lines (cc), which I will call (66), 

 are practically the same colour as that portion of the sides between the 

 lines (cc) and (dd). This upper part of the sides I have called (ee). 



As might have been expected in the case of an insect the imago of 

 which is so variable, the colour of the larva also exhibits great variety* 

 These variations are most marked in the case of the central dorsal lino 

 (a) and the adjacent spaces (66). In some cases, line (a) instead of being 

 pale-grey or smoky is orange or flesh-coloured, the spaces (66) being well 

 marked and as dark as the upper part of the sides (ee). The flesh- 

 coloured or orange line, in other specimens, gets gradually wider until, 

 finally, it occupies the whole of the space covered by the central line 



