Calliotropis bucina is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.
Description The shell can grow to be 5.5 mm in length.
Distribution This marine species occurs in the Mozambique Channel and off the French island of Réunion.
References
Vilvens C. (2007) New records and new species of Calliotropis from Indo-Pacific. Novapex 8 (Hors Série 5): 1–72