"Lanceolata" and "ovato-oblongus" have been additions. The observation
that it was difficult to distinguish this shell (which was not named
in the MS.) from the following, would mislead one, since the remark
referred to two unpublished species, which it originally preceded.
V. MERETRIX. _Cun._ subcordatus glaber, labris gibbis, nymphis apice
hiantibus.
_C. vulgatus_ was the name originally designed.