Lepidoptera of Devon and Corimall. 
115 
natural following, and consequence of the geological formations 
found in the two westernmost counties. The varied levels of 
country and the consequent temperatures lead in turn to the 
growth of a peculiar flora, and an abundance of insect life is 
the result. 
Beside those enumerated in this Catalogue, there are a few 
other species of Noctum supposed to be inhabitants of the area 
under observation, but the evidence supporting their claims to be 
considered natives of the West requires further elucidation. 
An appendix will follow in due course, when, with more know- 
ledge, the list will probably be extended. 
London, October, 1865. 
END OF VOLUME T. 
