RONDELET, Guillaume. Libri de piscibus marinia, in quibus verae piscium effigies expressae sunt [vol. II: Universae aquatilium historiae pars altera...], Lyon: Matthias Bonhomme, 1554 [-55]. 2 parts in one volume, 2° (350 x 212mm.), printer's device on title, woodcut portrait of the author in each part, over 400 woodcuts, woodcut initials and headpieces (large marginal burnhole to first 3 leaves, repaired along outer margin, light mainly marginal worming just occasinally affecting text, some browning and spotting), later boards (old spine relaid, worn). FIRST EDITION of the most important treatise on aquatic animals and fish published up to that time. Based largely on classical authorities, in particular Aristotle, it also includes results of Rondelet's own observations through experiments and anatomical investigations. It remained the standard reference work on ichthyology for over a century. Adams R746 and R747; GM 282; Nissen ZBI 3474; Norman 1848.