Tomella Swainson, 1840 Tomellana is a genus of sea snail marine gastropod mollusks in the family Clavatulidae.

[2] Tomellana is a replacement name for Tomella Swainson, 1840, a junior homonym of Tomella Robineau-Desvoidy, 1830 (order Diptera) The smooth and shining shell has a fusiform shape.

The whorls are separated by a simple suture.

The inner lip shows a thick callosity at the top.

The siphonal canal is short and wide.