tHAIS. 243 



of Arisfolochia, either singly, or in small companies. The 

 pupa is cylindrico-conical, somewhat angular in front. 



The species are all found in spring and early summer in 

 the Mediterranean Region. The type is T. polyxena (Denis 

 and Schiffermiiller), which is found in South France, Italy, 

 Austria, and South-eastern Europe and Western Asia generally. 

 It is a longer-winged insect than the species figured, and has 

 only one red spot (if any) on the costa of the fore-wings. The 

 larva is yellowish, with a brown dorsal band, six rows of 

 reddish-yellow spines tipped with black, and black dots on the 

 sides. It feeds on Aristolochia deiiiatidis in August^ and the 

 Butterfly appears in early spring. 



THAIS MEDESICASTE. 

 {Plate LXIII. Fig. i.) 



Papilio medesicaste^ Fabricius in Illiger's Mag. Insckt. ii. p. iSi 



(1803); Hiibner, Eur. Schmett. i. fig. 632 (1818). 

 Thais medesicaste^ Godart, Enc. Meth. ix. p. 84 (18 19); Bois- 



duval. Spec. Gen. Lepid. i. p. 388 (1836); Kirby, Eur. 



Butterflies and Moths, p. 3 (1878). 

 Fapilio runiina, Iliibner, Eur. Schmett. i. figs. 394, 395 



(1803?). 

 Fapilio riwiifta Eitropce austfaiis^ Esper, Schmett. i. (2) p. 



115, pi. 72, fig. 4 (1782?). 

 Thais ruf?ii?ia, var. riiedesicaste^ Lang, Butterflies Eur. p. 24^ 



pi. 3, fig. 4 (1881). 



Var. Thais hoiinoratii, 



Var. Thais honnoratii, Boisduval, Icones, p. 18, pi. 3, figs. 3-5,. 



(1832). 

 Thais 7nedesicasfe, var. honnoratii, Boisduval, Spec. Gen. Lepid. 



i. p. 389, pi. 5, fig. 4 (1836). 



R 2 



