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Taxon profile

species

Bathytoma prodicia Kilburn, 1986

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Borsoniidae »  genus Bathytoma

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Bathytoma prodicia

Author: Jan Delsing

Bathytoma prodicia

Author: Jan Delsing

Bathytoma prodicia

Author: Jan Delsing

Bathytoma prodicia

Author: Sysoev, A.V.

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Description

Shell biconical (b/1 0,40-0,45), spire relatively high (a/1 0,45-0,51), suture relatively shallow, whorls with a strong peripheral keel at or just anterior to median; columella without a pleat. Peripheral keel with 20-22 strong, rounded nodules, becoming flatter and somewhat irregular on later part of body whorl; strong, sigmoid growth-lines form fine, prosocline plicules below suture (on early whorls forming plicate cord); spiral lirae fine and feeble on and above peripheral keel; base of body whorl with 22-26 low spiral lirae, and 2-3 on penultimate whorl, where they are somewhat weak, lirae stronger and more convex on rostrum. Off-white, with a thin, transparent yellowish pcriostracum. Protoconch greyish-white, with very faint spiral striae, breadth 1,40-1,55 mm (b/h 1,27-1,55), 1st whorl strongly tilted. Maximum length 41,7 mm.
Dimensions: 30,5 x 13,8 mm (holotype); 41,7 x 16,5 mm, 35,1 X 14,0 mm (paratypes).
Kilburn, R.N., 1986. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 3. Subfamiliy Borsoniinae.

Interchangeable taxa

In recording (Kilburn 1971) the present species as Bathytoma regnans Melvill, 1918, I noted several discrepancies between local material and the original description. Comparison between the much larger series now available and the unique holotype of regnans (a chalky shell with eroded protoconch and broken lip) confirms their distinctness. The holotype (Fig. 168) of B. regnans (NMW 1955.158.499) differs from B. prodicia in its strong columella pleat, deeply channelled suture, strongly granular basal lirae, less oblique subsutural plicules, and stronger spiral sculpture.
Kilburn, R.N., 1986. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 3. Subfamiliy Borsoniinae.

Distribution

Range: Continental slope of southern Mozambique, 420-567 m.
Type material: Holotype NM 6068/T3134, E. of Bazaruto Is., 300-310 fath., don. Mrs K. Eastwood. Paratypes 1-15, NM A24/T3135, off Monte Belo, Limpopo River area, 230 fath., leg. G. Scott; paratype 16, NM 9789/T3136, off Inhaca Is., depth unknown, don. R. Cruickshank; paratypes 17-22, NM F7292/T3137, no locality, don. R. Cruickshank.
Kilburn, R.N., 1986. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 3. Subfamiliy Borsoniinae.
Author: Jan Delsing

Similar species

Bathytoma regnans J. C. Melvill, 1918

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Bathytoma prodicia Kilburn, 1986]
Data retrieved on: 21 July 2015

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