This book serves as a comprehensive guide to the grasshoppers and bush-crickets found within the British Isles. It aims to provide detailed information for identification, ecology, and distribution of these Orthopteran insects, catering to both amateur naturalists and professional entomologists.

This work is recognized as a foundational text for the study of British Orthoptera. Its detailed keys and distribution data are considered authoritative for identification purposes. The book is valued for its thoroughness in covering the subject matter, making it an essential reference for entomologists and naturalists interested in the insect fauna of the British Isles.