First edition of a very rare catalogue of the molluscs in the collection of Pietro Paolo Scali (dates unknown). The work mentions hundreds of different specimens, each with a short description. The specimens are divided in three classes, namely turbinate univalves, non-turbinate univalves, and bivalves. The taxonomic term Bivalvia was first used by Carl Linnaeus (1707-1778) in 1758 to refer to animals with shells composed of two valves. However, it appears that Scali already used it 12 years prior.
The edges of the first few leaves are somewhat soiled, the last three leaves show a small water stain in the outer margin, the work is slightly browned and foxed throughout. Otherwise in good condition. Not BMC(NH).