Four new species of Pyramidellid gastropods, Turbonilla nanseni, T. willasseni, T. halanychi and T. hoeisaeteri are described from the Gulf of Guinea, West Africa, based on shell morphology. The descriptions are a part of an ongoing project describing the pyramidellid fauna of the area, and it is clear that the region hosts a large pyramidellid diversity and additional species of pyramidellids are to be expected. The recent usage of the genus Turbonilla is discussed.

To cite this paper: Lygre, F., Kongsrud, J.A. & Schander, Ch. 2011. Four new species of Turbonilla (Gastropoda, Pyramidellimorpha, Turbonillidae) from the Gulf of Guinea, West Africa. African Invertebrates 52 (2): 243-254.