INTRODUCTION. 
The chief object in preparing the present Catalogue has been to give at one view 
a complete list of all the species of the Lepidopterous Insects of the family Papi- 
lionidse now in the British Museum Collection, and a reference to those species 
known to exist in other collections, but which are at present desiderata in the 
Museum Collection, to enable travellers, collectors and others to assist in completing 
the national collection. 
An indication of the separate locality of each species is given, and in most cases 
the sex is also noticed. 
Great care has been taken to adapt the generic and specific names first used to the 
genera or species, and a reference has been made to the works in which the species 
have been described and figured. 
In those cases where the two sexes of the same species, or any particular individual 
state or variety belonging to it, have been differently named, the name or figure ex- 
clusively appertaining to the state or individual is placed after the indication of the 
specimen to which it applies. 
Mr. George Robert Gray has taken great care in the determination of the species, 
the verification of the synonyms, in arranging them in accordance with the present 
state of the science, and in describing the species and varieties which appear not 
to have been previously recorded. 
Pigures of the new species and varieties contained in the Museum Collection have 
been appended, from drawings on stone by Miss Elizabeth and Mr. William Wing, 
and coloured by Mr. Standish. 
JOHN EDWARD GRAY. 
British Museum, T '“ cember I, 1852. 
