m JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XIX. 



dorsally from segment 7 to end, transverse section of the part circular The 

 pupa decreases gradually in diameter from segment 7 to end ; ventral 

 line straight, cremaster inclined to it, triangular, truncated, slightly bifid at ex- 

 tremity, stout, with two strong, rugose, ventral extensor ridges, each ridge 

 knobbed at both ends ; suspensory hairs at extremity in a dense tuft. 

 Spiracles oval, of moderate size, colour of the body with a linearly oval white 

 centre. Body surface shiny, finely and irregularly rugose under lens. Colour 

 when formed among green leaves is a rich shiny green with the head-points, 

 cremaster and dorsal wing-margin orange-yellow. When formed among dry 

 leaves the colour is that of a clean fresh bone : pinkish dirty white with a faint 

 dorsal flesh-coloured line ; wing-veins also flesh-coloured ; some blurred dirty 

 blotches laterally on thorax and first abdominal segments ; dorsal wing-margin 

 light yellow-brown, head process pinkish yellow ; the whole with minute black 

 spots. L. 4lram., of which head-process 6mm. r B. 13"5mm. at segment 7 where 

 the H. is 12-5mm. 



Habits. — The eggs are laid along the midrib of the blade on 

 the underside in rows when more than four or five : sometimes 

 as many as 1 5 together. The little larvse emerge and live together, 

 looking like a patch of whitish woolly hair ; and they live like 

 this until the last moult, when each goes its own way. Then 

 each larva lives on top of a bamboo-leaf, coating it all over with 

 silk and drawing one or two others over it, thus forming a 

 cell ; sometimes among a collection of dead leaves, amongst the 

 iireen ones or along the stems of the bamboos. The larva is rest- 

 less, wanders a good deal, making several cells during its life-time : 

 and wanders often a long way before pupating. The position 

 chosen for the change is generally somewhere right in the interior 

 of a bamboo-clump fairly near the ground, or among dead leaves 

 or rubbish where the larva often fixes its tail in a pad made on a 

 perpendicular stalk or stem, lying with its head up stem ; it becomes 

 dirty-whitish in colour, falls over backwards and in that position 

 changes to a pupa, which is a proceeding known only besides in 

 the genus Orsotriwna of the Satynnoe. Ten young larvte were 

 found on the 17th of May. They moulted on the 22nd ; again on the 

 26th and for the 5th time on the 1st of June ; they began to pupate 

 on the 11th and the first butterfly came out on the 22nd. This 

 would mean that the larva at this particular time of year requires 

 one month to complete its growth and that the pupa stage lasts 

 about 11 days, most probably 10*5 days or a week and a half. The 

 places where the eggs are laid are generally the beds of cool 



