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Epitoniidae Berry, 1910 (1812)

Epitonium skoglundae

DuShane, 1974

Description:

Dimensions range from 5 mm - 16.2 mm high and 3 mm wide.
Width to height ratio: 0.6:1 ~ 0.19:1

Shell: ovate-conical, rissoiform; minute to small. About 6.5 whorls, rounded; protoconch with ~1.5 whorls opaque, showing minute riblets under maginfication; teleoconch with ~5 whorls. Suture distinct. Approximately 25 - 32 costae on the body whorl. Costae are sharp, thin edged, but heavier where they join the whoi, curved to follow the contour of the whorl, with a small pit at the suture before joining the next costa above. Costae very slightly reflected; continuous from whorl to whorl, with a small pit at the suture before joining the costa above. Intercostal spaces smooth, without spiral threads. Fasciole strong, wrinkled anteriorly. Aperture round, lip heavy. Operculum unknown.


Distribution:

west Mexico to Panama [Dushane, 1974]


Habitat:

mid-tide level among gravel.


Etymology:

The name honors Carol Skoglund of Phoenix, Arizona, an avid collector, who brought the specimen back from a collecting trip to Panama in March 1972


Type Material:

Holotype: LACM, Invertebrate Zoology Type Collection, no. 1612 paratypes (5): LACM, Invertebrate Zoology Type Collection, no. 1613, paratypes (2) : Carol Skoglund Collection paratypes (2) DuShane Collection [as Epitonium (Nitidiscala) skoglandae DuShane, 1974] - Type Locality: Epitbonium (Nitidiscala) skoglundae: Fort Amador, Panama Canal Zone, Lat. 8°56' N; Long. 79°33' W, 10 specimens, none alive, taken at mid-tide level among gravel, March, 1972. [DuShane, H., 1974]
Holotype: LACM 1612 for Epitonium skoglundae DuShane, 1974 - Type Locality: Fort Amador, Panama Canal Zone, 08° 56´N, 79° 33´W, taken at mid-tide level among gravel.. [Brown, L. & Neville, B.D., 2015]
Holotype is LACM 1612; Paratypes: AMNH 275625 (2 specimens ex DuShane Collection.), and additional paratypes are LACM 1613 and in the collection of C. Skoglund for Epitonium skoglundae DuShane, 1974 - Type Locality: Locality: 08° 56 N, 79° 33 W, Fort Amador, Panama Canal Zone, Panama, Pacific Ocean. Collector: C. Skoglund, March 1972.. [Boyko, C. B., & Cordeiro, J. R., 2001]


SpeciesImage

DuShane, H. (1974). pp: 70. Fig. 151.

Figure 151: Epitonium (Nitidiscala) skoglundae DuShane, spec. nov. Holotype, LACM 1612; length 5 mm; width 3 mm X 12.8

Distribution

as listed in source literature

DuShane, H. (1974).
Species Image
pp: 70. Fig. 150.
Figure 150: Epitonium (Nitidiscala) skoglundae DuShane, spec. nov. Holotype, LACM 1612; length 5 mm; width 3 mm X 12.8
Species Image
pp: 70. Fig. 151.
Figure 151: Epitonium (Nitidiscala) skoglundae DuShane, spec. nov. Holotype, LACM 1612; length 5 mm; width 3 mm X 12.8
Species Image
pp: 70. Fig. 153.
Figure 153: Epitonium (Nitidiscala) skoglundae DuShane, spec. nov. Holotype, LACM 1612; length 5 mm; width 3 mm X 12.8

Synonymy:

Epitonium (Nitidiscala) skoglandae DuShane, 1974 [in DuShane, H., 1974].


Source Literature:

Boyko, C. B., & Cordeiro, J. R. (2001). Catalog of recent type specimens in the Division of Invertebrate Zoology, American Museum of Natural History. V. Mollusca, part 2 (Class Gastropoda [exclusive of Opisthobranchia and Pulmonata], with supplements to Gastropoda [Opisthobranchia], and Bivalvia).. Bulletin of the American Museum of Natural History. 262. https://www.researchgate.net/publication/298847335 [Accessed 26 January 2026]
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. [Watson, 1886:143]Zootaxa. 3907(1). Magnolia Press Auckland, New Zealand. http://dx.doi.org/10.11646/zootaxa.3907.1.1 [Accessed 22 October 2023]
DuShane, H. (1974). The Panamic-Galapagan Epitoniidae. The Veliger. 16 (Sup. 14). https://www.biodiversitylibrary.org/page/42500298 [Accessed 25 September 2023]
DuShane, H. (1985). The family Epitoniidae of Panama Bay. The Festivus. 17(7). https://www.biodiversitylibrary.org/item/196075 [Accessed 11 January 2026]
Groves, L.T. (2012). Catalog of Recent Molluscan Types in the Natural History Museum of Los Angeles County. Natural History Museum of Los Angels County, Malacology Section. https://www.academia.edu/77579686/Catalog_of_Recent_Molluscan_Types_in_the_Natural_History_Museum_of_Los_Angeles_County [Accessed 8 August 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