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Taxon profile

species

Typhlosyrinx supracostata M. M. Schepman, 1913

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Raphitomidae »  genus Typhlosyrinx

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Typhlosyrinx supracostata

Author: Jan Delsing

Typhlosyrinx supracostata

Author: Jan Delsing

Typhlosyrinx supracostata

Author: Jan Delsing

Typhlosyrinx supracostata

Author: Schepman. M.M.

Typhlosyrinx supracostata

Author: Powell, A.W.B.

Taxon in country check-lists*

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Description

"Shell fusiform, 32-46 mm. (1,25-1,75 inches) in height with short canal, thin, shining, light yellowish-white. Nucleus wanting, remaining whorls 8 nearly regularly convex, very slightly excavated below the conspicuous but shallow suture in lower whorls, more so in upper ones. Sculpture consisting in the upper whorls of thick axial ribs, disappearing on the sixth whorl, which is 9-ribbed, the lower whorls are nearly smooth, but are sculptured under the lens by fine, strongly waved growth lines, more conspicuous at regular intervals; the whole shell crossed by very faint spirals, scarcely visible on the upper parts of whorls, stronger on the lower part, having the appearance of crowded lirae on the canal. Last whorl regularly attenuated below, ending in a short, wide canal. Aperture elongately oval, angular above, peristome with a wide but shallow sinus at the suture, then strongly protracted; columellar margin nearly straight, covered by a thin layer of enamel".
On the basis of "Albatross" material, in the United States National Museum from 305 fathoms off Borneo, a fresh specimen shows a colour pattern of porcellanous-white, with a broad zone of pale orange-brown, occupying most of the penultimate and body-whorl except for a moderately wide subsutural band, and a narrow second zone encircling the anterior end. The upper whorls are devoid of colour zones.
Powell, A.W.B., 1969.The family Turridae in the Indo-pacific. Part 2: The subfamily Turriculinae.

Interchangeable taxa

This species differs from praecipua only in being more slender, with a proportionately taller spire and the presence of distinct spiral striations on the neck and anterior end.
Powell, A.W.B., 1969.The family Turridae in the Indo-pacific. Part 2: The subfamily Turriculinae.

Distribution

Indonesia, Borneo and Flores Sea, 305 to 417 fathoms.
Powell, A.W.B., 1969.The family Turridae in the Indo-pacific. Part 2: The subfamily Turriculinae.
Author: Jan Delsing

Similar species

Typhlosyrinx praecipua E. A. Smith, 1899

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Typhlosyrinx supracostata (Schepman, 1913)]
Data retrieved on: 23 November 2013

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