Bittium alternatum (Say, 1822) Bittium nigrum (Totten, 1834) Cerithium reticulatum Totten, 1835 Cerithium sayi Gould, 1841 Diastoma alternatum (Say, 1822) Diastoma virginica Henderson & Bartsch, 1914 Pasithea nigra Totten, 1834 Turritella alternata Say, 1822 Bittiolum alternatum is a species of sea snail, a marine gastropod mollusk in the family Cerithiidae.

[1] The maximum recorded shell length is 8.3 mm.

[2] The minimum recorded depth for this species is 0 m, maximum recorded depth is 37 m.[2]

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