In my former communication to the Geological Magazine on Galerites albogalerus, I gave the results of the examination of the specimens in the British Museum and of many others, and stated that the species was edentulous, and that a true fifth basal (posterior generative plate) was never present. I explained that the so-called jaws were ten buccal plates, that the so-called auricles were raised surfaces in casts, and therefore depressions in the real, and that Cotteau, who had noticed a fifth plate, stated it was exceptional. This fifth plate is absolutely a part of basal plate No. 4 (left posterior generative), and is not a true basal plate.