360 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, 1890. 



the tail and by a moderately long band ; the abdominal segments are 

 round, but the thorax is much compressed, the wing-cases uniting to 

 form a deep, sharp keel. The head-case terminates in a short pointed 

 snout. Ordinarily the pupa is solitary and green ; but about the end 

 of last September a boy brought us a dry twig, with fourteen pupaa 

 on it so close together that they almost touched each other, and quite 

 black. We are inclined to think that the withering of their food 

 plant had caused these fourteen larvae, which would ordinarily have 

 suspended themselves singly among the leaves on which they were 

 feeding, to migrate in a body in search of a place where they might 

 safely pass the pupa state. Many Pierince and other larva3 seek each 

 other's company at that time. Having selected a dead branch of some 

 neighbouring bush, they acquired the colour of their surroundings, 

 as nearly all Pierince and Papilionince pupae do to a greater or less 

 extent. A curious circumstance in this case was that all the 

 butterflies which emerged from those fourteen pupae had a large, 

 rust-coloured patch on the underside of the apex of the forewing. 

 Terms hecabe was very common at that time, but we met few with 

 this mark well developed. The favourite food of this species is 

 Sesbania aculeata, a monsoon annual, already mentioned as the food 

 of Tarucus ptinius. It also feeds readily on Cassia tora. 



61. Cafopsilia py rant he, Linnaeus. 

 Larva long, somewhat depressed, rough, green, with a white lateral 

 line, and above it a black line, more or less conspicuous, formed by 

 minute, flat, shining, black tubercles. Tn short, this larva is very 

 like a big specimen of the last. The pupa is much stouter, and the 

 keel formed by the wing-cases is much less pronounced. The 

 normal colour is pale green, with a yellow lateral line. We have 

 never found it on any plant except Cassia occidental is. It habitually 

 rests on the upperside, along the midrib, like almost all Picri/uB 

 larvae. 



62. Catopsilia crocale, Cramer. 



The larva is not easily distinguishable from that of the last ; but 



in their choice of food the two species differ. We have found this on 



several species of Cassia, all arboreal, such as fistula and sumatrana ; 



but never on the humble and ill-smelling occidentalis. The larva has 



