The invertebrate collections held by the Leeds City Museum, in numerical terms, comprise about two thirds of the natural history department's holdings of over 300,000 specimens. The following paper describes some of these collections, the people who assembled them, and some of the staff, researchers, outside specialists and others who subsequently worked on them. The paper also discusses some aspects of their scientific and historical significance, and their importance both to Leeds, and to the charge-payers who finance their existence.