T. rostrata. T. oblonga, antice angulato-rostrata.
The T. rostrata of the final edition of the 'Systema' was assuredly the T. Spengleri, and with that shell solely will the printed account in the 'Museum Ulricæ' accord. But the five earlier lines of the description (save "et albus"), and the detailed dentition (except "fossula distinctus"), with the varieties a, b, g, and the same synonyms as in the tenth edition of the 'Systema,' appear in the MS. with the name T. petasunculus attached. Whether designedly or not, there was a pictorial definition of T. vulsella in the earlier 'Systema;' and if an author be not allowed to amend his description, T. vulsella is better entitled than T. Spengleri to the name rostrata. "Margo exterior parum repandum est" was written in the MS.
T. remies. T. rugosa, suborbiculata.
The expressions "hians," "primores," "remoti," and the last five words of the details were absent; "utrinque" followed "duo": "non" in place of "vix" was the earlier reading.
T. scobinata. T. scabra orbiculata.
"Primores," and "in altera testa profunda fossula distinctus," were not in the copy.
CARDIUM.
Cardo dentibus baseos binis, marginis solitariis remotis acutis. Valvulæ gibbæ, hinc figura cordis.
Bucardium was the epithet applied in the written copy to the members of this genus, to which the Solen bullatus of the 'Systema' was correctly referred. Mactra had not then been separated.
C. costatum. Buc. sulcis costis elevatis membranaceis.