Fam. 1.— PAPILIONID^. 
Larva cyliiiclrical, not spiny, furnished with two retractile 
tentacles on the second segment. Imago with the abdominal or 
inner margin of the wings concave. Anterior legs fully developed. 
AntemiEe distinctly clubbed. 
Four genera of European butterflies belong to this family — 
Papilio, Thais, Doeitis, and Paenassius. 
Genus 1. — PAPILIO, Linn. Syst. Nat. i. 2, p. 744 (1767). 
Clubs of antenme curved upwards. Head large ; eyes pro- 
minent ; palpi very short, scarcely reaching beyond the eyes. 
Abdomen moderately thick and long. Wings tolerably thick, with 
prominent nervures, the inferior pair generally provided with a 
long tail as an elongation of the hind margin. 
This is a very numerously represented genus, species of it 
being found almost in every part of the globe. Its head-quarters, 
however, are the inter-tropical regions of both hemispheres. Only 
four species occur in Europe, and of these one is confined to 
certain islands of the Mediterranean, and has not been recorded 
as inhabiting any other region of the world. 
1. P. Podalirius, Mus. Ulr. p. 208 (1764); Hiib. Eur. Schmet. 
I. f. 388, 389 ; Boisd. Sp. Gen. i. 245 (1836). 
Expands 2*50 to 3’25 in. Wings pale yellow. Eore wings 
with hind margins black ; three or four black streaks running 
from the costa nearly to the inner margin, the costal end being 
