TIIAIS MEDES1CASTE. 
1C9 
hinder pair of wings is curved downwards as if to 
leave room for the movements of the abdomen. The 
caterpillars are short and cylindrical, covered with 
fleshy spines and short hairs, the first segment pro- 
vided with a fleshy bifurcated tentaculum. They 
live solitarily or in small groups on the Aristolochia , 
and obviously bear a considerable analogy, as well 
as the perfect insect, to 1’arnassius. The chrysalis 
is cylindrico-conic, somewhat angular in front. 
The species represented on the annexed plate may 
possibly be a variety of T. Rumina. Surface pale 
oclireous yellow, with a black marginal band divided 
on the upper wings by a series of eight or nine 
yellow spots ; along the costal margin are several 
black irregular transverse bands, some of them in- 
closing rounded red spots; inferior wings with a 
black festooned line along the exterior border ; 
towards the base are always three red spots, one 
near the abdominal margin, another in the upper 
part of the discoidal cell, and a third near the ante- 
rior edge, usually united in the form of a transverse 
band with that in the cell. Body blackish, marked 
with rows of fulvous spots. 
The caterpillar lives on the Aristolochia pistolochia. 
f''ometimes the colour is reddish-yellow, at other 
times brown or dull yellowish-green, with numerous 
rows of black lines often interrupted ; the body 
bearing six rows of fleshy spines, of an orange yel- 
low hue, and ciliated with black at the extremity. 
The insect is found in Languedoc, in the neigh- 
bourhood of Digne, &c. 
