Note the existence of two nominal species, originally introduced as Vermetus panamensis Rousseau in Chenu, 1844, and Serpula panamensis Chenu, 1846. Both are now recognized as gastropods.
Bieler, R.; Petit, R. E. (2011). Catalogue of Recent and fossil “worm-snail” taxa of the families Vermetidae, Siliquariidae, and Turritellidae (Mollusca: Caenogastropoda). Zootaxa. 2948, 1-103. available online athttp://www.mapress.com/zootaxa/2011/f/zt02948p103.pdf