Epitoniidae Berry, 1910 (1812)

Cylindriscala humerosa

(Schepman, 1909)

Description:

Dimensions range from 15 mm - 30 mm high.
Width to height ratio: 00:1 ~ 00:1

Shell: elongately pyramidal; moderately thin; small to moderately small. About 17 whorls, convex; teleoconch with 11-17 whorls. Suture deep. Imperforate. Approximately 13 costae on the body whorl. Costae are angular at the shoulder, crossed by the ridges. Intercostal spaces with fine, hairlike, elevated striae. Columella margin reflected over the umbilical region. Aperture subcircular, slightly angular above.

Distribution:

East Banda Sea; Loyalty Ridge; Marquesas Islands; Polynesia [Lima & Christoffersen, 2012]

Habitat:

dark sand with small stones, 416-1570 m [Brown & Neville, 2015]

Type Material:

Type not indicated in text for Cylindriscala humerosa (Schepman, 1909) - Type Locality: East Banda Sea, in 1570 m.. [Garcia, E.F., 2003]
Holotype: ZMA [as Scala (Opalia) humerosa Schepman, 1909] - Type Locality: Station 241, Banda Sea, 2º 24.3´S, 129º 49.3´E, 1570 m, dark sand with small stones. [Brown, L. & Neville, B.D., 2015]

SpeciesImage

Schepman, M.M. (1909). Plate XIV. Fig. 7.

Distribution

as listed in source literature

Schepman, M.M. (1909).

Shown in text as Scala (Opalia) humerosa Schepman, 1909

Species Image

Plate XIV. Fig. 7.

Species Image

pp: 227.

Garcia, E.F. (2003).

Species Image

pp: 17. Fig. 50.

. 50: Cylindriscala humerosa (Schepman, 1909) Loyalty Ridge, 20°23'S, 166°20'E, 780 m,.
[MUSORSTOM 6: sta. CP438], length 30 mm. 5

Synonymy:

Scala (Opalia) humerosa Schepman, 1909 [in Brown, L. & Neville, B.D., 2015].
Scala (Opalia) humerosa Schepman, 1909 [in Schepman, M.M., 1909].

Source Literature:

Brown, L. & Neville, B.D. (2015). Catalog of the recent taxa of the families Epitoniidae and Nystiellidae (Mollusca: Gastropoda) with a bibliography of the descriptive and systematic literature. Zootaxa. 3907(1). Magnolia Press Auckland, New Zealand. http://dx.doi.org/10.11646/zootaxa.3907.1.1 [Accessed 22 October 2023]
Garcia, E.F. (2003). New records of Indo-Pacific Epitoniidae (Mollusca: Gastropoda) with the description of nineteen new specie. Novapex. 4 (Hors-série 1). http://biodiversitylibrary.org/page/42322472 [Accessed 26 August 2023]
Lima, S. F. B & Christoffersen, M. L. (2012). Checklist of Recent Cyllindriscala [Caenogastropoda: Epitoniidae] of the World. Check List. 8[4]. DOI:10.15560/8.4.740 [Accessed 27 August 2025]
Schepman, M.M. (1909). The Prosobranchia of the Siboga Expedition. Part 2. Taenioglossa and Ptenoglossa. E.J. Brill,Leyden. https://www.biodiversitylibrary.org/page/34314807 [Accessed 27 July 2025]
Weil, A., Brown, L. & Neville, B. (1999). The Wentletrap Book. Evolver
WoRMS Editorial Board (2025). World Register of Marine Species. https://www.marinespecies.org [Accessed 8 November 2025]

WoRMS direct page link: Open WoRMS record