The 'decussato-rugosa' of the 'Systema', applicable to the 'Vermetus subcancellatus', the shell designed in that work, was not inserted. Gualtieri's figure is that of Vermetus glomeratus, for the colouring of which 'alba' would be a most inappropriate term.
S. lumbricalis. D. spira divaricata teretiusculum, integrum.
D'Arg. t. 29. f. 1. was an additional synonym.
S. arenaria. D. teres rectiusculum intestiniforme.
Despite the name borrowed from Rumphius, the Vermetus gigas was the object defined in the tenth edition of the 'Systema'. The absence from the manuscript of the reference to Gualtieri's drawing of that shell, and "rectiusculum" in the written diagnosis, confirms the conclusion previously arrived at, that the Septaria arenaria of authors was the species intended in the 'Museum Ulricæ': it was subsequently termed S. polythalamia by Linnæus. The delusive "subangulata" of the supposititious diagnosis was of course absent.
The V. gigas was probably intended by the following unpublished description.
D. intestiniforme. D. teres flexuosum intestiniforme.
Testa rudis crassitie digiti et ultro, flexuosa vario modo in diversis, integra, intus lævis.
S. anguina.
The two very dissimilar Siliquariæ united under this appellation in the 'Museum Ulricæ,' were originally held distinct. The prickly variety was the unpublished type, and was thus defined:—