THAIS. 
9 
be acceptable: — “ Differt a Pap. MacJiaone ; 1°, Larva spinosa 
aliterque picta ; 2° fasciis discoidalibns in siiperiori alarum pagina 
angustioribus ; 3° angiili anali macula tantum semilmiari picto. 
Marem Cisto Monspelliensi insideutem reperi iii viciniis di Fortoli 
die 20 m. maii. Foeminam legi in Barhagia Ollolai prope Gavoi 
ineunte junio.” PI. V., 4. 
Obs. — The Corsican specimens seem to be larger than those 
from Sardinia. Mine, which are from Corsica, are quite as large 
as P. Machaon, though in most figures the species appears much 
smaller. 
Genus II. — THAIS, Fab.; Lat. ; Boisd. 
Medium-sized butterflies having the head and eyes of mode- 
rate size, palpi straight, passing beyond the head. Clubs of 
antemiEe curved. Wings not semi-transparent. All the known 
species have black spots on the costa of fore wings ; the hind 
wings are more or less dentated and decorated along their hind 
margin with red and black dots. The prevailing colour of the 
wings is yellow, more or less intense. 
The Larvae are cylindrical, rather short, and armed with 
spines, which are set at the extremity of tubercular elevations. 
A small y-like process posterior to the head. They feed on 
various species of Aristolochia. 
The species of this beautiful genus are not numerous, and all 
belong to the Mediterranean division of our Fauna, being peculiar 
to the South of Europe, North Africa, and Asia Minor. 
The design of the wings is so unlike that of any other tribe of 
Lepidoptera, especially as regards the dentate pattern of the hind 
margins, that it is not difficult to recognise a Thais at the first 
glance. 
1. T. Cerisyi, B. ; Htib. Eur. Schmet. i. 890-1. 
Expands 2 to 2-25 in. Wings yellowish white, black at the 
base. Fore wings with a row of black streaks running from the 
costa ; hind margin black, with a row of black spots placed parallel 
to it. Hind wings tailed as in Papilio ; a row of black V-shaped 
c 
