Authors(s)

Sowerby, J., continued by G. B. Sowerby, 1833(?) The genera of recent and fossil shells, for the use of students in conchology and geology, 39. Genera Aplysia, Fusus, Delphinula, Bulla, Solenella, class Pteropoda. London (Sowerby): 4 pp., pls 136, 137.