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Taxon profile

genus

Maorimorpha Powell, 1939

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Mitromorphidae

Description

Shell narrowly subcylindrical with high spire, short aperture and shallowly notched siphonal canal; anal sinus slight or absent; no columella pleats; labrum with or without small denticles; sculpture of spiral lirae, with or without weak axials. Protoconch large and papilliform, of 14 smooth or (in all?) spirally striate whorls, 1st one inrolled. Operculum and radula unknown.
Kilburn, R.N., 1986. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 3. Subfamiliy Borsoniinae.
The new genus is provided for a species described originally as a Mitromorpha by Murdoch (1905), removed to Alcira in the Pyrenidae by Suter (1913), and more recently referred back to the Turridae by Finlay (1926). The relationships of the genus are not obvious, but it is undoubtedly a Turrid, although there is superficial resemblance to the spirally lirate Pyrenids.
The generic characters are: Protoconch large, smooth, papillate, rather straight-sided, apex oblique but hardly lateral; post-nuclear sculpture of moderately strong spiral lirations continuous over all whorls and the neck of the canal; labial sinus subsutural, broad, shallow, but distinct; canal short, broad and open, lip thin, not denticulate.
The genus so far as I know is monotypic.
The type of suteri is from Whangaroa Harbour, but the species occurs also at Stewart Island (dredged off Half Moon Bay) and Foveaux Strait (Bluff oyster scrapings).
Powell, A.W.B. (1939). The Mollusca of Stewart Island.
Author: Jan Delsing

Included taxa

Number of records: 3

species Maorimorpha secunda A. W. B. Powell, 1942

Maorimorpha secunda

species Maorimorpha sulcata (Sowerby III, 1892)

Maorimorpha sulcata

species Maorimorpha suteri R. Murdoch, 1905

Links and literature

EN The Interim Register of Marine and Nonmarine Genera [1014959]

Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Maorimorpha Powell, 1939]
Data retrieved on: 30 November 2019

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