Benthonellania agastachys Bouchet & Waren 1993
- Dataset
- The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Mollusca
- class
- Gastropoda
- order
- Littorinimorpha
- family
- Rissoidae
- genus
- Benthonellania
- species
- Benthonellania agastachys
discussion
REMARK Hernández et al. (2011) reported Benthonellania oligostigma Bouchet & Warén, 1993 from the Canaries, and illustrated a specimen (from the private collection of Winfried Engl, Germany) collected in 330 m depth off Fuerteventura. However B. oligostigma, originally described from off Madeira in 990 m depth, has a much more conical, not cyrtoconoid spire, has about half as many axial ribs as the species found in the Canaries, does not have a thickened outer lip and has a much more blurry spiral sculpture. Conversely, both our specimens and that illustrated by Hernández et al. adjust to Benthonellania agastachys, described from a single juvenile specimen collected in 500 m between Fuerteventura and Cape Juby, Morocco (actually in Moroccan waters but very close to the divide). Benthonellania agastachys was abundant in DW 130 and a fully adult shell, with well-developed outer lip, is here figured.
materials_examined
MATERIAL EXAMINED. — 84 sh., DW 130.