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Taxon profile

species

Exilia cortezi (W.H. Dall, 1908)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Ptychatractidae »  genus Exilia

Scientific synonyms

Surculina cortezi W. H. Dall, 1908
Surculina galapagana W. H. Dall, 1919

Images

Exilia cortezi

Author: Dall, W.H.

Exilia cortezi

Author: Dall, W.H.

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Description

Shell small for the genus, white under a straw-colored periostracum, thin, with about seven whorls exclusive of the (lost) nucleus: suture oppressed, the edge slightly swollen, the fasciole in front of it slightly constricted; axial sculpture of about a dozen narrow rounded ribs with wider interspaces, beginning at the fasciole and obsolete on the base; also fine incremental lines rising to minute wrinkles near the suture; spiral sculpture on the penultimate whorl of about nine flattish threads with narrower interspaces, on the last whorl beyond these threads the interspaces become channeled grooves and the places of the threads wider flat areas, while on the canal these are replaced by more rounded closer threads; aperture narrow, the anal sulcus very shallow, outer lip thin, sharp, arcuate, simple; pillar and body erased, smooth, the pillar attenuate in front; canal narrow, straight. Height of shell. 20 mm. Height of last whorl 14 mm. Diameter. 7 mm.
Source: Dall, 1919. Descriptions of New Species of Molluscs of the Family Turritidae from the West Coast of America and Adjacent regions. (Original description) (as galapagana)

Distribution

Cortez Sea. Off the Galapagos
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Exilia cortezi (Dall, 1908)]
Data retrieved on: 22 November 2013

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