original descriptionBouchet, P. & Warén, A. (1985). Revision of the Northeast Atlantic bathyal and abyssal Neogastropoda excluding Turridae (Mollusca, Gastropoda). <em>Bollettino Malacologico.</em> supplement 1: 121-296., available online athttps://www.biodiversitylibrary.org/bibliography/140763 page(s): 147-148, fig. 348-350 [details]
context source (Deepsea)Gofas, S.; Luque, Á. A.; Templado, J.; Salas, C. (2017). A national checklist of marine Mollusca in Spanish waters. <em>Scientia Marina.</em> 81(2) : 241-254, and supplementary online material., available online athttps://doi.org/10.3989/scimar.04543.21a[details]
basis of recordGofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. <em>Patrimoines Naturels.</em> 50: 180-213., available online athttp://www.vliz.be/imisdocs/publications/ocrd/254404.pdf[details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Biology Type of larval development: direct (non-planktotrophic) inferred from paucispiral protoconch. [details] Diagnosis Shell up to 35 mm, with a moderately high spire. Protoconch small, formed by one smooth whorl. Teleoconch with conspicuous, large foliaceous varices which start on the first postlarval whorl and extend over the protoconch; on the later whorls there are 3-4 varices per whorl, each one abutting on the corresponding varix of the preceding whorl so as to build up large, oblique axial lamellae; the intervening spaces betwen the varixes are swollen, forming axially aligned nodes. Spiral sculpture of faint cords, which become more marked over the varices. Aperture small, regularly oval. Siphonal canal relatively narrow and curved, open along its whole length by a narrow slit, flanked by remnants of previous instances of the canal remaining from former growth stages. Colour white, specimens from the Azores reported to have a few brownish blotches on the varices or the nodes.
The West African Pterynotus leucas (Fischer, 1897) differs in having a larger protoconch and in lacking the swell and nodes in between varices. [details] Distribution The Azores; Great Meteor, Hyères and Irving seamounts, uncommon in 295-450 m. [details] Type locality The Azores, 37º51'N, 25º40'W, 370-455 m. [details] Type locality off Azores (37º51'N, 25º40'W, 370-455 m) [details]