Nearly half of the “Schemata” (engravings) in Robert Hooke’s seminal work of science Micrographia (1665) show either entire invertebrates or their body parts, and a similar proportion of the “Observations” (descriptions and conjectures) either discuss such organisms at length or refer to them in some other way. Here, taxonomically accurate identifications are attempted for the full array of the book’s marine and terrestrial non-insectan invertebrate taxa (a similar treatment of its insects having recently been published). Those animals belong to the following five phyla: Porifera, Ectoprocta, Nemata, Mollusca, Arthropoda, and to the following species: Flustra foliacea, Turbatrix aceti, Cornu aspersum, Chelifer cancroides, Phauloppia lucorum, Leiobunum rotundum, Tyrophagus longior. Hooke also wrote about a spider which was very probably Salticus scenicus, and he mentions the scabies mite Sarcoptes scabei. The non-insectan invertebrate Observations are examined with a view to evaluating their scientific con...