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Stephensonactis ornata Panikkar 1936

Containing group: Haliactiidae


Haliactiidae with long, vermiform body, distinctly divisible into three regions, a more or less physa-like base, a broader scapus provided with rows of cinclides and with nematocysts arranged in groups, and a narrow capitulum. No sphincter. Tentacles arranged in 5-6 cycles. Longitudinal muscles of tentacles and radial muscles of oral disc ectodermal. 2 siphonoglyphs. Mesenteries divisible into macro- and microcnemes, more numerous distally than proximally. 6 pairs of macrocnemes. Retractors of the macrocnemes as those of Phytocoetopsis, parietal muscles rather well developed. Acontia thick, long, arranged in the usual manner, with basitrichs and probably microbasic amastigophors ("penicilli").

Other Names for Stephensonactis ornata Panikkar 1936


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Please note that Carlgren's text contains a number of errors, and much of the information is now out of date.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. Stephensonactis. Stephensonactis ornata Panikkar 1936. Version 01 January 2000 (temporary). http://tolweb.org/Stephensonactis_ornata/17891/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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