SUSPENSION OF PUP^. 281 



the manner of the leaf-rollers, another most unusual 

 and remarkable circumstance.* 



Another caterpillar of the same family, that of 

 the awaliow-tailed butterfly (Papilio Machaon, 

 Linn.), one of our finest but local native insects, 

 having a body less pliable than the preceding, has 

 recourse to a still different method of forming a 

 cincture. The proceedings of this beautiful cater- 

 pillar, distinguished by two retractile horns, like 

 those of a snail, may be illustrated by the mode in 

 which a skein of silk is wound from the hand. The 

 insect first attaches the end of his thread to the spot 

 selected for hanging up the chrysalis, such as the 

 bend of a branch of fennel or wild carrot, on which 

 he has been feeding ; and extends it outwards by the 

 hooks on his claws, by which means he keeps it 

 stretched till he fixes it on the other side, forming a 



ffl, Caterpillar of the swallow-tailed butterfly, weaving its sus- 

 pensory cincture, b, the caterpillar suspended, for its change, o, 

 the chrysalis suspended in a similar manner. 



* J. li. 



r3 



