Genitalia of the Group Noctuidae of the Lepidoptera of the British Islands

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. It is therefore not without misgivings that I am induced to record the results of 20 years spent in happy investigations, made in odd hours stolen from so busy a life that often weeks would elapse, before I could sp...