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Taxon profile

species

Comitas exstructa E. von Martens, 1903

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Pseudomelatomidae »  genus Comitas

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Comitas exstructa

Author: Powell, A.W.B.

Comitas exstructa

Author: Martens, E. von

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Description

Testa anguste biconica, nodulis parvis subobliquis subsuturalibus uniseriatis, tuberculis majoribus obliquis uniseriatis et liris 1-2 spiralibus crassiusculis suprasuturalibus sculpta, griseo-fulva, unicolor; anfr. 9, primus globosus, laevis, oblique positus, sequentes uniseriatim tuberculati, inde a quinto superne subcomplanati et nodulis parvis subsuturalibus praediti, medio subangulati et tuberculati, deinde liris spiralibus 1-2, priore tubercula attingente cincti, sutura sat impressa, ultimus parte inferiore liris spiralibus sat fortibus (5-6 excluso canali) cinctus et sensim attenuatus; apertura dimidiam longitudinem totius testae aequans, anguste ovata, margine externo inter suturam et seriem tuberculorum arcuatim emarginatus, canali sat longo subrecto late aperto, dorso confertim et oblique spiratim lirato, margine columellari subrecto laevi, non distincte limitato.
Martens, E. von & Thiele, J., Die beschalten Gastropoden der deutschen Tiefsee-Expedition 1898-1899
Shell small. 24 mm. (ca 1 inch) in height. Whorls 9, including a smooth globular protoconch of about 1,75 whorls. Spire slightly taller than height of aperture plus canal. Post-nuclear whorls firstly with a subsutural series of rounded gemmules. followed by a steeply descending shoulder concavity to a bluntly rounded nodulose peripheral angulation, set just below middle whorl height. The axials are short, vertical to slightly protractive, about 16 per whorl. Spiral sculpture of 1-2 narrowly rounded cords, situated between the peripheral axials and the lower suture, with a third cord half emergent over the last whorl. Rather widely spaced spiral cords continue over the base and neck. Surface crowded with axial growth lines. Sinus broadly and shallowly arcuate, occupying most of the shoulder concavity. Outer lip thin, evidently protractively arcuate.
Powell, A.W.B., 1969.The family Turridae in the Indo-pacific. Part 2: The subfamily Turriculinae.

Distribution

Nicobar Islands.
Author: Jan Delsing

Similar species

Comitas subsuturalis E. von Martens, 1902

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Comitas exstructa (Von Martens, 1904)]
Data retrieved on: 23 November 2013

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