300 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XX. 



variegated. Head quardrate, square in front with a flattened, spirally 

 twisted process proceeding from the front of each eye, diverging one from 

 the other at first, then converging towards the tips ; they are not very long 

 and are widely separated at their bases, they are toothed on the outer 

 edge and have some small tubercles on the somewhat thickened extremities. 

 Segment 2 is oval in shape (the dorsal visible portion, that is,) is convex 

 transversely and is nearly 2/3 as broad as long. The sides of head and 

 segment 2 are parallel, the shoulders have each a small, flattened, short, 

 double-toothed process. The wings are suddenly expanded behind the 

 shoulders into a short flat process which as suddenly ceases about segment 

 4 : this expansion is also double-toothed at extremity. The thorax "hump" 

 is hemisphere-shaped and is highly carinated in dorsal line from the front 

 margin to apex. The constriction behind the thorax is wide and slight 

 dorsally and laterally. Abdomen is circular in transverse section, decreas- 

 ing in diameter from the stoutish segment 7 to the thick, broad, hexagonal, 

 not very long cremaster which is hollowed out above and below. The wings 

 are slightly curved in their ventral line of junction with each other ; the 

 ventral line of abdomen is nearly straight. The whole aspect of the pupa 

 is slight for its length. On segments 2-12 is a subdorsal, longish, pointed 

 tubercle, those on segments 6-9 and segments 11 and 12 have a thin, flat 

 wing to each side of them, the plane of this wing being parallel to the dorso- 

 ventral plane of pupa, the wings of the tubercles of segment 7 being excep- 

 tionaly large, those of segment 8 half the size, those of the other small. 

 Segments 6-11 have a lateral pointed tubercle, segments 8-11 a subspira- 

 cular one also. There are paired ventral tubercles on the ventrum as also 

 one at base of proboscis. Spiracles longly oval, dark in colour, of ordinary 

 size. Surface of body finely rugose, transversely aciculate. Colour of pupa 

 is brown marbled with white and grey and black, with a subdorsal gold 

 patch on segments 2, 4, 5. L : 29 mm. ; B at broadest part which is at the 

 expansion of wings : 9*5 mm. ; H at segment 7 : 9'5 mm. ; L of head 

 process : 2 mm. 



The figure is that of the male and is good although, as usual, not bright 

 enough. 



Habits. — The eggs are laid in groups of 15 to 20 and more on 

 the undersides of leaves, generally of fairly fresh leaves. The little 

 larvae emerging, live gregariously there and continue the same 

 mode of life up to the end, feeding in rows along the edge of a leaf. 

 These larvae are very active, eat voraciously and, consequently, 

 grow fast ; they are not very subject to insect parasitism ; perhaps 

 the vivid colouring makes them look rather dangerous. The 

 pupation takes place, in rows very often, along and from a twig or 

 stem, not necessarily of the food-plant. The pupa hangs loosely but 



