CATALOG OF ORIGINAL DESCRIPTIONS: Actissa prunoides Haeckel 1887

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.

Higher levels: rads_cat -> A -> Actissa -> Actissa prunoides
Other pages this level: A. discoides, A. ellipsoides, A. larcoides, A. lenticularis, A. phacoides, A. princeps, A. prototypus, A. prunoides, A. radiata

Actissa prunoides

Citation: Actissa prunoides Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.14
Family (traditional): not-known

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Current identification:

Original Description
Central capsule ellipsoidal, colourless, with a thin, simple-edged membrane. Proportion of its major axis to the minor 1: 3. Nucleus spherical, its diameter equal to one-third of the minor axis, in its centre a large, dark, spherical nucleolus. Protoplasm clear, containing numerous small vacuoles, separated by regular distances, and on the inside of the capsule-membrane, numerous (forty to fifty) small oil-globules. Calymma (or jelly-veil) ellipsoidal, with a thin sarcode-stratum on the outside of the capsule; its diameter twice as large as that of the central capsule.

Major axis of the capsule 160µm, minor 120µm; diameter of the nucleus 40µm; major axis of the calymma 320µm, minor 240µm.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Actissa prunoides under the subgeneric name Actoprunum, but did not include the subgeneric name in the species name.


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


Actissa prunoides compiled by the radiolaria@mikrotax project team viewed: 21-4-2021

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