| Cingula, Crisilla, Rissoidae, Rissoa, Alvania|
Boreocingula castanea is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Boreocingula castanea Wikipedia
The maximum recorded shell length is 4.8 mm.
Minimum recorded depth is 2 m. Maximum recorded depth is 150 m.