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Isometridium

Isometrdium Richettsi [sic] Carlgren 1949

Containing group: Metridiidae

Characteristics

Metridiidae? with broad base. Column divisible into a smooth very thick scapus and a thinner capitulum, the former ends above in a distinct collar. No cinclides. Sphincter mesogloeal in the capitulum and in the uppermost part of the scapus. Uppermost part of capitulum and the oral disc drawn out in very numerous permanent lobes. At the apices of these lobes there are extraordinarily numerous, short, filiform tentacles of about same length, their longitudinal muscles ectodermal. Oral disc forming a fold inside the tentacles. Radial muscles well developed, ectodermal on the outer side of the fold and on the inner side of the lobes (in a groove), seemingly absent in other parts. 2 very broad siphonoglyphs. Mesenteries very numerous. Several perfect pairs of mesenteries. The 12 first pairs sterile. Retractors of the mesenteries diffuse, weak. Acontia numerous. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors, microbasic amastigophors (and microbasic b-mastigophors?).

Other Names for Isometrdium Richettsi [sic] Carlgren 1949

References

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Please note that Carlgren's text contains a number of errors, and much of the information is now out of date.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. Isometridium. Isometrdium Richettsi [sic] Carlgren 1949. Version 01 January 2000 (temporary). http://tolweb.org/Isometrdium__Richettsi_%5Bsic%5D/18229/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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