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Please note: Entries in the above species list are the original binomina of species according to Carlgren's 1949 catalog. Nomenclatorial inconsistencies need to be resolved in a future revision of this genus (see below).
Containing group: Hormathiidae


Hormathiidae with broad pedal disc, often elongated in the transversal or sagittal plane. Column smooth or provided in its upper part with usually small mesogloeal papillae, arranged in longitudinal rows. Cinclides occurring as a rule only over the directive endocoels, few in number (1-3 or a few more?), their external opening often mounted on a papilla; in very young specimens cinclides may be indistinct or absent? Sphincter mesogloeal, usually strong. Tentacles rather robust, sometimes with mesogloeal thickenings on the aboral side at the base, always fewer than the mesenteries at the limbus. Longitudinal muscles of tentacles and radial muscles of oral disc ectodermal. 1-3 siphonoglyphs. Pairs of perfect mesenteries at least 6, their arrangement often irregular. 1-3 pairs of directives. The stronger mesenteries fertile except sometimes the directives. Retractors diffuse, usually fairly weak. Acontia well developed. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors.


Carlgren, O. 1949. A Survey of the Ptychodactiaria, Corallimorpharia and Actiniaria. Kungl. Svenska Vetenskapsakadamiens Handlingar, series 4, volume 1, number 1.

About This Page
The information provided on this page is based on Oscar Carlgren's 1949 catalog.
Copyright © 1949 Swedish Academy of Sciences.

Please note that Carlgren's text contains a number of errors, and much of the information is now out of date. An update of the catalog is currently under preparation in Daphne Fautin's laboratory, and the results of this work will be incorporated in future versions of this page.

Keyboarding of Carlgren's catalog was done as part of a project to create an electronic database of the sea anemones of the world, funded by NSF Grant DEB9521819, awarded to Daphne G. Fautin. This grant is in the program Partnerships to Enhance Expertise in Taxonomy (PEET). Susanne Hauswaldt, Katherine Pearson, and April Wakefield-Pagels contributed to the keyboarding effort.

Correspondence regarding this page should be directed to Daphne G. Fautin at

All Rights Reserved.

Citing this page:

Tree of Life Web Project. 2000. Amphianthus. Version 01 January 2000 (temporary). http://tolweb.org/Amphianthus/18132/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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