V. MERETRIX. _Cun._ subcordatus glaber, labris gibbis, nymphis apice hiantibus. _C. vulgatus_ was the name originally designed. V. CASTRENSIS. Cun. suborbiculatus glaber, characteribus scriptus. V. MEROE. _Cun._ sutura postica hians. V. FIMBRIATA. _Cun._ subrotundus decussatus rugosus, longitudinaliter striatus. D'Argenville was not referred to. V. RETICULATA. _Cun._ subcordatus, striis crenatis decussatis, ano cordato. V. tigerina. Cun. suborbiculatus, striis crenatis decussatis, ano ovato. The name was an error, having been derived from the "Lingua tigerina" of Rumphius (his figure G., not H.): _fuliginosus_ was the one originally intended. V. PROSTRATA. _Pho._ orbiculata, transverse striata, labiis scabro-membranaceis. The unpublished details had been previously referred to in the 'Systema.' V. PENNSYLVANICA. _Pho._ glabra, rugosa, antice sulco longitudinali. "Habitat in Pennsylvania," and "subdiaphana," were the unprinted additions. The "margo interne crenatus," "nates sub-recurvatæ," and "color intus versus marginem violaceus," were not in the copy. The last character (so utterly inappropriate to the features of _Lucina P._) was, I suspect, intended for _punctata_ on the page opposite. V. INCRUSTATA. _Pho._ glaberrima lævissima, punctis excavata. The details were referred to in the 'Systema' before their publication. V. PUNCTATA. _Pho._ longitudinaliter sulcata. The G in the reference to Rumphius was a misprint for the written D, from which figure ("Chama pectinata") our author had proposed to borrow the specific name, but subsequently had preferred the published designation. "Klein, 147. Actinobolos æquilatera" has been added to the MS. by Linnæus. V. EXOLETA. _Pho._ decussatim striata. The original synonymy and details have been so transmuted in the press, that it is manifest that the amended (!) species was perfectly distinct from the shell originally designed. The name of the latter was _clathrata_, and the declared sculpture was not merely "transversim," but "et longitudinaliter" likewise (in place of "striis retrorsis"). The reference (added by Linnæus) was not to Gualtieri, but to Lister, 335, f. 172, and its copy in Klein (t. 10. f. 52), both which would have more appropriately been assigned to _V. reticulata_. The _V. exoleta_ having been previously defined in the 'Systema,' this confusion becomes of little importance. V. ZICZAC. _Pho._ striis transversis membranaceis erectis.