Gibbula galbina Hedley & May, 1908 Nanula galbina is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails[1] The height of the species' shell attains 5.5 mm, its diameter 7 mm.

The broadly perforate, translucent, glossy shell has a depressed-turbinate shape.

The 4½ whorls are rounded on the base, angled at the periphery, flattened above and impressed at the suture.

The sculpture of the protoconch is smooth, the next whorl shows a couple of spiral keels, which by intercalation multiply in number, but decrease in relative importance as the whorls advance.

The body whorl carries close fine spiral threads, of which every fourth or fifth predominates.