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Containing group: Endomyaria


Thenaria (Endomyaria). Column smooth or provided with projections in the form of verrucae, marginal spherules, pseudospherules or vesicles which never have macrobasic amastigophors. Sphincter absent or endodermal diffuse to circumscribed. Tentacles simple, arranged in cycles. Never more than one tentacle communicating with each endo- and exocoel. Mesenteries not divisible into macro- and microcnemes. Perfect pairs of mesenteries rarely six, as a rule more than six.


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

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Scientific Name Anthopleura xanthogrammica
Location intertidal near Bodega Marine Lab, University of California
Comments originally described as Actinia xanthogrammica
Specimen Condition Live Specimen
Copyright © 2000 Ron Ates
Scientific Name Actinia equina
Location Puerto del Carmen, Lanzarote, Canary Islands
Specimen Condition Live Specimen
Source Actinia equina
Source Collection Flickr
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 2.0.
Copyright © 2008 Isidro Martínez
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Please note that Carlgren's text contains a number of errors, and much of the information is now out of date.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. Actiniidae. Version 01 January 2000 (temporary). http://tolweb.org/Actiniidae/18324/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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