[2][4] Recently, Ramírez (2004)[5] reported it from Cerro Pasamayo and Salinas de Huacho in Lima Region.

[2] She also refers to unpublished data by Weyrauch, who collected the species at Cerro Campana, 14 km north of Trujillo 07°58’54’S 079°06’24’W (selected as type locality by Ramírez) and near Chilete in Cajamarca Region.

[2] According to Haas (1955)[4] – reporting a locality at 1360 m – his shells ‘are slightly more slender than the typical form’.

[2] It is possible that this variation can also be found in the populations at the localities in La Libertad, in which case Bostryx turritus tamboensis should be considered a synonym of the nominate taxon.

[2] Living animal are whitish-grey throughout, the black eye-retractors are shining through the tentacles and the dorsal side of the body.