Vexillum (Protoelongata) species 1

(Figs 69–71)

Vexillum semicostatum (ANTON, 1838) 12.6 mm. Madagascar – Robin & Martin (2004), plate C–28, fig. 2 nd row, left [non (ANTON, 1838)]

Comments: This species so far is only known from Madagascar. Bob Abela took a photo of a live specimen during the Atimo Vatae expedition, organized by the MNHN to the south of Madagascar in 2010. The animal shows the typical colouration of the new subgenus Protoelongata . The shell is pictured in Robin & Martin (2004) and there are two worn specimens in the collection of the second author. Further investigation is necessary to verify the protoconch characteristics.