PAPILIO. 
95 
many of the Sphingides ; others are short and thick, 
and furnished with numerous rather short fleshy 
points ; finally, there are some ( Podalirius , Ajax, 
Antiphates) which somewhat resemble snails in 
shape. The caterpillars of Papilio may he distin- 
guished from those of other genera belonging to the 
same tribe by the following characters : — They differ 
from those of Ornithoptera in their retractile tenta- 
culum not being enclosed in two exterior cases ; 
from those of Thais, in the projections which they 
sometimes present being never hispid at the extre- 
mity ; and from those of Pamassius, in the body 
being always free from pubescence ; but it is more 
particularly from the characters drawn from the 
chrysalis and perfect insect that this last genus is 
distinguished from Papilio*.’' 
The perfect insects are characterised by very short 
palpi not passing beyond the eyes, all the joints 
very indistinct, the third quite invisible ; antennae 
pretty long, the club slightly curved upwards ; ab- 
domen pretty large, the anal valves in the male of 
moderate size ; wings rather strong, the inferior pair 
having the abdominal margin folded upwards and 
leaving the abdomen free, their exterior border 
more or less denfatcd, and often prolonged poste- 
riorly into a tail. 
According to the above definition, the genus com- 
prehends rather upwards of 220 species. They are 
distributed over almost every quarter of the globe, 
Species general dcs Lcpidoptercs, vol. i. p. 184. 
