The reading of the MS. was not "secundum marginem insculptus," but
"secundum marginem Mytilus."
M. HYOTIS. _Ost._ subacuto-plicatum imbricatum squamis compressis, labio
utrinque glabro.
M. MARGARITIFERUS. _Ost._ semiauritum, imbricatum tunicis, basi
transversum.
"Bonan. 2. f. 1." was the omitted synonym. The description of the hinge
was not at first inserted.