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."