Following the discovery of two letters from Jules-René Bourguignat to Crosse, another letter from Bourguignat shows the disdain he felt for the French malacologist Jean-Baptiste Gassies (1816–1883).
An overview is given of the malacological papers published by the Frenchman Jules-René Bourguignat (29.viii.1829 – 3.iv.1892). Because of the Principle of Priority, special attention is given to publication dates, as Bourguignat introduced > 2500 taxa in the ‘Golden Age’, a period in malacology in which many new species were discovered. Five portraits of Bourguignat are reproduced, and reproductions are provided of the rare plates 13-15 of the 1880 fascicule of his Matériaux sur les Acéphales. Publication dates are given for the three journals published by the Société Malacologique de France.