THAIS. 
11 
every case from a prepared specimen lie received tlirougli Kiiider- 
man from the coasts of the Sea of Marmora), who says ‘ the 
caterpillar varies extraordinarily,’ hut only describes the specimen 
figured, which is very dazzling yellow, striped with black, and has 
red prickles. The only prepared specimen of a real Cerisiji which 
I possess bears a single clear black dorsal stripe, laterally only 
detached black marks. 
“ The caterpillars of the var. Beyrollei vary very much. I saw 
between five or six hundred specimens without any black longi- 
tudinal stripes; many were bright greenish yellow or reddish, 
with sharp black short lines and dots. On the dorsal aspect of 
every segment are four of these, two in front of the prickles and 
two behind, the posterior being most widely separated ; two short 
unbroken lines are placed laterally between the segments ; the 
stigmata are black, with a black longitudinal streak in front. The 
wart-prickles {tvarzendonien) are smaller than the red prickles of 
the larva of Cerisiji or Gaucasica, and always yellowish green, even 
in the quite dark and almost black form Two cater- 
pillars of the var. Gaucasica which I have before me are dark, with 
reddish prickles, and two quite black stripes on the dorsal aspect 
in front of the prickles. We found the caterpillars of T. Deyrullei 
in crowds on the Aristolocliia hastata from the middle of May. 
They grow but slowly, and take from six to eight weeks from the 
egg to the chrysalis. Before changing the otherwise sluggish 
caterpillar crawls about restlessly during one or two days, often 
disturbing, in the breeding-cage, the suspended caterpillars, which, 
like all other Thais larvae, spin themselves fast with a thread round 
the head and by the tail.” 
2. T. Polyxena, Schiff. S. V. 162 (1776); Hub. 392-3.— 
Hypsijnjle, F. Gen. 265 (1777); H.-S. 557-8. — Rumina 
alba, Esp. 105, 1, 2. — Aristolochice, Schu. (1787). — 
Cassandra, Mann. Stett. E. Z. (1844), 348. 
Expands 2 to 2*75 in. Wings ochre-yellow. Fore wings with 
the hind margin black, the black border being divided throughout 
its length with yellow. Five black transverse bands reaching from 
the costa and not passing the median nervure ; beneath this two 
