by William Swainson

“ A very perfect one exists in my father's collection which measures only two inches one line long: it differs slightly in wanting the lower white band and its inferior border: there is also an additional small plait between the second and third, a variation not uncommon in the Linnæan Volutes, and which lessens the importance of this character as a specific distinction. ”

“ III. Apertura angusta, linearis, suprà angulata, infrà subcontracta. Mitræ vulpecula, plicata, &c. Obs. Testa plerumque longitudinaliter plicata, æqualiter fusiformis, labio exteriore lævi leviter undulato, interiore ad apicem intrà crassato; gulâ striatâ. ”