SWALLOW-TAIL BUTTERFLY. 95 



a series of imperfectly defined blue spots, and a row 

 of six large yellow crescents externally ; the outer 

 edge is also yellow, interrupted with black at the 

 nervures. On the hinder angle of each of the un- 

 der wings there is a large round spot of red, streaked 

 with light blue anteriorly, and nearly surrounded by 

 a black ring. The under side resembles the upper, 

 the most considerable differences being in the yellow 

 outer border of the upper wings, and the presence of 

 two or three faint red spots behind the discoidal cell, 

 and another on the outer edge of the under wings. 

 The body is black above, and clothed with yellow 

 hairs, the latter forming a line on each side of the 

 thorax ; the under parts are chiefly yellow. 



The caterpillar is not of large size compared with 

 the perfect insect. It is smooth, of a greenish co- 

 lour, with the incisures and a band on each seg- 

 ment deep black, spotted with red ; the retractile 

 organ on the neck of the latter colour.* (Plate III. 

 fig. 1.) It is a solitary feeder, and usually fre- 

 quents umbelliferous plants, preferring fennel, and 

 the wild carrot. It also feeds on the latter plant in 

 a cultivated state, and sometimes occasions consi- 

 derable injury to it in France, where the insect is 

 very common, and hence known in certain districts 

 by the name of Grand Carottier. The chrysalis is 

 green, with a streak of yellow along each side, and 

 an irregular row of yellow spots on the back. 



* For an accurate and more detailed description, re- 

 ference may be made to Ray's Hist. Insect, p. 111. 1. 



