INTRODUCTION. 
Whew describing British Moths and Hawkmoths 
in a former volume of this series, such a consider- 
able space was devoted to the general history of 
these tribes, that it is not necessary again to enter 
into it, at any length, on the present occasion ; 
while, at the same time, the peculiarities of the 
order Lepidoptera, of which they form a part, have 
been amply detailed in the two other volumes 
which treat of that subject. 
Exotic moths compose by far the most extensive 
portion of the lepidopterous order; and notwith- 
standing the immense number with which we are 
already acquainted, there is every reason to believe 
that a large proportion still remains unknown to us, 
especially of the smaller species, which travellers in 
foreign lands have for the most part wanted either 
the opportunity or inclination to investigate. When 
compared with those of our own country, as strongly 
marked a contrast in regard to size is observable, as 
we had formerly occasion to point out between our 
native and foreign butterflies. The Atlas Moth of 
