""Hawaiian and Other Pacific Echini: The Salenidae, Arbaciadae, Aspidodiadematidae, and Diadematidae"" is a book written by Alexander Agassiz in 1908. The book is a detailed study of the echinoderms found in the Pacific region, specifically the families Salenidae, Arbaciadae, Aspidodiadematidae, and Diadematidae. It includes descriptions of the physical characteristics, habitat, and behavior of each species within these families, as well as illustrations...