III. Subgenus Sinuina Jung, 1989.
Morphologic Description: protoconch 3 volutions; outer lip protoconch sigmoid; sculpture on early teleoconch present; axial sculpture predominant in later teleoconch; dorsal hump absent; hump to the left of aperture absent; thickness outer lip moderate; outer lip strongly extended adapically.
Species:Return to taxonomic listing of subgenera for Sincola.