Scaphander willetti Dall, 1919

Siegwald, Justine & Malaquias, Manuel António E., 2025, Bringing light into deep-sea biodiversity: a systematic revision and molecular phylogeny of the genus Scaphander Montfort, 1810 (Gastropoda: Cephalaspidea), with a focus on the Indo-Pacific, Zoological Journal of the Linnean Society 203, pp. 1-60 : 54

Scaphander willetti Dall, 1919

Remarks: Dall (1919) described Scaphander willetti based on a broken empty shell of 12 mm height from Forrester Island, Southern Alaska ( Fig. 38D ). This taxonomic assignment was corroborated by Valdés (2019), but in our opinion, despite the presence of a sculpture made of faint spiral lines of oval pits, the features of this shell do not entirely fit Scaphander . The sharp pyriform outline, wide anterior aperture, and flat spire and shoulder are together characters absent in Scaphander . However, we feel unable at this stage to ascribe this broken shell confidently to any known genus; therefore, until additional evidence is available, we follow the assessment by Valdés (2019).

Figures

Figure 38.Shells of taxa previously assigned to Scaphander. A, Sabatia takedai, Hawaii, Oahu Island, off Honolulu (paratype, Nipponoscaphander takedai, NSMT Mo-58234, H = 6 mm). B, Cslichna boshirensis, Persian Gulf, Bushire (syntype, NHMUK 1901.12.9.55, H = 9 mm). C, Cslichna ceslanica, [illustration by Annandale and Stewart (1909) of the original material for Scaphander ceslanica collected on the Investigator, H = 9 mm]. D, Cslichniom willeti, Alaska, Forrester Island (holotype, Scaphander willeti, USNM 216405, H = 12.5 mm).