The fellow has actually taken it upon himself to deliver a lecture on malacology!
In malacology, a class of aquatic mollusca, having no apparent head, but a mouth between the folds of their mantle.
These have been described and figured by the writer in the 'Journal of malacology,' vol.
malacology, mal-a-kol′o-ji, n. the branch of natural history which treats of the structure and habits of molluscs.
The days of conchology were then doomed; and the study of the mollusc, or malacology, took its place.