PHOLAS.
The Pholas of the manuscript is perfectly dissimilar to that of the 'Systema.' Our author had evidently, when he first wrote the 'Museum Ulricæ,' not appreciated the remarkably striking characteristics of this group, having located the only species he then knew (for P. candidus seems a subsequent discovery) with the Solens.
P. candidus. Not mentioned in the manuscript.
P. crispatus. Sol. ovatus, obtusissimus, cardinis dente depresso rotundato.
The Appendix to Lister was not cited; "Habitat in Anglia, Suecia," was appended to the description, which in many respects was inferior to the published one. The account of the hinge was merely "Cardo dente dilatato rotundato extus excavato."