(FISHES, etc.) Jonston, John. Historiae naturalis de piscibus et cetis libri V. 47 engraved plates of fishes and whales. 228 pages, including engraved title * Historiae naturalis de exanguibus aquaticis libri IV. 19 (of 20) engraved plates of crustaceans, molluscs, and turtles; lacks plate 18. 78, [12] pages. Together, 2 volumes in one. Folio, old mottled calf, rebacked in the early 19th-century, joints cracked at top and bottom, cover corners worn through, endpapers conspicuously renewed; occasional heavy browning of text, opening leaves of the first work dampstained in outer margins affecting several plates, remaining plates relatively clean. Frankfurt am Main: Matthaeus Merian, [1650]; 1650