An account of the Crustacea of Norway Christiania, A. Cammermeyer, 1895-1928, Crustacea, Norway, Crustaceans, An educational illustration showcasing various species of isopods, labeled with scientific nomenclature. The diagram includes detailed depictions of different anatomical features such as the carapace, legs, and appendages. Examples include Haploplonthalmus Mengii, with annotations highlighting key characteristics, alongside other related isopod species. The meticulous linework emphasizes the diversity and complexity of these crustaceans, providing insights into their morphology for study and reference.