168 THE MALAYAN PAPILIONIDE AS 
the anterior wings, different from that of the allied 
species and varieties of all the surrounding islands ; 
6. Tailed species in India or the Indian region become 
tailless as they spread eastward through the archi- 
pelago; 7. In Amboyna and Ceram the females of 
several species are dull-coloured, while in the adjacent 
islands they are more brilliant. 
Local variation of Size.—Having preserved the finest 
and largest specimens of Butterflies in my own col- 
lection, and having always taken for comparison the 
largest specimens of the same sex, I believe that the 
tables I now give are sufficiently exact. The differences 
of expanse of wings are in most cases very great, and 
are much more conspicuous in the specimens themselves 
than on paper. It will be seen that no less than four- 
teen Papilionidee inhabiting Celebes and the Moluccas 
are from one-third to one-half greater in extent of wing 
than the allied species representing them im Java, Su- 
matra, and Borneo. Six species inhabiting Amboyna 
are larger than the closely allied forms of the northern 
Moluccas and New Guinea by about one-sixth. These 
include almost every case in which closely allied 
species can be compared. 
Species of Papilionide of the Closely allied species of Java and 
Moluccas and Celebes (large). the Indian region (small), 
Expanse. Expanse. 
Inches. Inches. 
Ornithoptera Helena O. Pompeus ... «. «.. 5'8 
Amboyna) wee aoe 768 { O. Amphrisius ... ... 60 
Papilio Adamantius 
(Celebes) ... . « 58 
P. Lorquinianus (Mo- P. Peranthus we av OS 
luccas) sig ak Gee ATS 
