M. Latreille on the Geographical Distributxon of Insects. S9 
of Great Britain, of the south of Sweden, of the north of France, 
as far as the inferior course of the Loire, of Prussia, of Germany 
Proper, and of the south of Russia, as far as the Crimea, ex- 
clusively. The intermediate climate, at equal distances from 
the polar and equatorial, will comprehend all the other insects 
of the south of Europe, and of a western portion of Asia. Those 
from the north of Africa, to the Equator, belong to the climates 
which I have named super-tropical, tropical, and equatorial. 
These western climates may be divided, by a meridian, in- 
to two equal parts of 48° each This meridian would 
pass under the 14° east of Paris, near Vienna would leave to 
the east, die most southern part of Italy, Turkey in Europe, 
Egypt, &c. Now, we have already observed that many insects 
of the environs of Vienna, are found also in the Levant ; and 
that those of the kingdom of Naples, of Egypt, and of the 
south-east of Europe, appear to differ, for the most part, from 
the species -of the southern and western species of that division of 
the globe ; we can then form here Sub-climates. If we cut the 
eastern band, of which the extent in longitude is 120°, into 
four equal sections of 30° each, by meridians, we shall have 
sub-climates, of which the boundaries accord with nature. Thus 
the first will comprehend Hindostan, Thibet, the Little Bucha- 
ria. Western Siberia, &c. In the second we shall find almost 
all the Philippine Islands, China Proper, and the regions to the 
north, as far as a little beyond the river Lena. The Corea, 
Japan, the country of the Mantcheus and the Tonguses, &c. will 
form the third. Lastly, the fourth will present us with Kam- 
tschatka, and the other countries which terminate the north-east 
of Asia. America could also be subdivided in the same manner, 
or in parts of 36°. 
I am sensible, that Nature, in her distribution of localities pro- 
per to the species of these animals, frequently swerves from the 
regular march which I have traced ; that her lines of habitation 
form curves and sinuosities, and that they are even interrupted 
or crossed by others. But I have simply wished to sketch out 
a sort of geographical map ; I have endeavoured to circumscribe 
* And afterwards of 24'’, 
