""On A Collection Of Sierra Leone Lepidoptera"" is a book written by William Schaus in 1893. The book is a comprehensive study of the butterflies and moths found in Sierra Leone, a country located in West Africa. Schaus was an American entomologist who traveled to Sierra Leone to collect specimens of lepidoptera, which he then studied and described in detail in this book. The book includes a detailed introduction to the geography and climate of Sierra...