References:
Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs
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Current identification:
Original Description
Cephalis very large, flat, cap-shaped, trilobed, with hexagonal base, of the same structure as in the three preceding species. The flat discoidal thorax is also similar, and has the same structure as in the preceding species (Pl. 57, fig. 9); but the number of concentric, nine-angled rings is raised from five to eight, and in its outer part nine secondary radial beams are interpolated between the nine primaries, so that the peristome has not nine but eighteen corners.
Size: Cephalis 0.08 diameter, thorax 0.4 diameter.
Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Sethophormis arachnium under the subgeneric name Enneaphormis, but did not include the subgeneric name in the species name.
The \three preceding species\" refers to Sethophormis rotula (pl.57, fig.9), S. triloba and S. enneastrum in Haeckel, 1887a."[comment from RadWorld database]
Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gsReferences:
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Sethophormis arachnium compiled by the radiolaria@mikrotax project team viewed: 7-3-2021
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=261296 Go to Archive.is to create a permanent copy of this page - citation notes |