radiolaria - rads_cat

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Cypassis

Type species: Cypassis palliata Haeckel 1887 [designated by Chediya,1959, p.117]

Family (traditional): Coccodiscidae

Cyphinida with double cortical shell and double medullary shell, without polar spines or tubes.

From the Greek cypassis = a girl's girdle"

The genus Cypassis differs from Cyphonium by duplication of the cortical twin-shell; from the outer surface of the simple twin-shell arise numerous radial spines, which become connected by anastomosing transverse branches, and in this manner form an outer envelope or mantle. Cypassis may also be regarded as a Cromyodruppa, the double cortical shell of which is constricted in the equatorial plane.

[Campbell, 1954, D74 considers Cypassis Haeckel, 1887a to be an objective synonym of Astromma Ehrenberg,1847a. He designates Astromma entomocora Ehrenberg, 1847a [invalid name] as the type species of Astromma and only by inference of Cypassis. However, the type species of Astromma by subsequent monotypy is Astromma aristotelis Ehrenberg, 1847b. Therefore, we consider Chediya's designation [1959, p.117] of Cypassis palliata Haeckel, 1887a, p.366 to be valid.

It may seem, in accordance with ICZN (1961) art. 23 (e, i) that this genus should have been called Didymocyrtis Haeckel, 1860 since here in 1887a Haeckel treats Didymocyrtis as a subgenus of Cypassis and the other subgenus, Didymospyris, is of a later date. However, this seems inappropriate, since the type species of Didymocyrtis (by absolute tautonomy, Haliomma didymocyrtis Haeckel, 1860) is not among the species included in Didymocyrtis at the time of its assignment as a subgenus of Cypassis. Haeckel assigns a date of 1881 for the other subgenus, Didymospyris. However, since Didymospyris is not acutally mentioned in Haeckel, 1881a, it is considered to date from 1887a. Therefore, because the name Cypassis is of the same date, Cypassis remains the appropriate generic name.}
Sub-genera described:

Cypassis (Cypassis) Haeckel 1887
Cypassis (Didymocyrtis) Haeckel 1861
Cypassis (Didymospyris) Haeckel 1887

References:

Haeckel, E (1887a). 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 years 1873-1876. 18: 1-1803. gs O

				Cypassis cingulata Popofsky 1912
not figured				Cypassis eucolpos Haeckel 1887
not figured				Cypassis halicora Haeckel 1887
				Cypassis irregularis Nigrini 1968 = Cypassis irregularis
not figured				Cypassis palliata Haeckel 1887
				Cypassis puella Haeckel 1887

CATALOG OF ORIGINAL DESCRIPTIONS: Cypassis Haeckel 1887

Cypassis

References:

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