Description of a New Notaspidean Genus and Species (Opisthobranchia: Notaspidea) from the Antarctic Ocean

A new genus and species of the suborder Pleurobranchoidea Férrussac, 1822 (order Notaspidea) is described from the Weddell Sea (Antarctic Ocean). It is the second species of side-gilled sea slug to be described from the southern polar seas. The monotypic genus Tomthompsonia new genus with the specie...

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Bibliographic Details
Published in:Journal of Molluscan Studies
Main Authors: Wägele, Heike, Hain, Stefan
Format: Text
Language:English
Published: Oxford University Press 1991
Subjects:
Articles
Antarctic
The Antarctic
Weddell Sea
Weddell
Antarctic Ocean
Antarc*
Online Access:http://mollus.oxfordjournals.org/cgi/content/short/57/Supplement_Part_4/229
https://doi.org/10.1093/mollus/57.Supplement_Part_4.229
Description
Summary:A new genus and species of the suborder Pleurobranchoidea Férrussac, 1822 (order Notaspidea) is described from the Weddell Sea (Antarctic Ocean). It is the second species of side-gilled sea slug to be described from the southern polar seas. The monotypic genus Tomthompsonia new genus with the species T. spiroconchalis new species differs from all other known genera of the Pleurobranchoidea by its coiled, internal shell, and the absence of a median buccal gland and pedal gland. The phylogenetic affinities within the Pleurobranchoidea are discussed.

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