CATALOG OF ORIGINAL DESCRIPTIONS: Actissa larcoides 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 larcoides
Other pages this level: A. discoides, A. ellipsoides, A. larcoides, A. lenticularis, A. phacoides, A. princeps, A. prototypus, A. prunoides, A. radiata

Actissa larcoides

Citation: Actissa larcoides Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.16
Family (traditional): not-known

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Current identification:

Original Description
Central capsule lentelliptical; with three different axes, bearing the proportion 4: 3: 2. Nucleus spherical; its diameter equal to the shortest radius of the capsule. No nucleoli visible. Protoplasm transparent, with small vacuoles; on the inside of the thin capsule-membrane numerous (fifty to sixty) small oil-globules, regularly disposed. Calymma lentelliptical, twice as large as the central capsule.

Major axis or length of the capsule 200µm, middle axis or breadth 150µm, minor axis or height 100µm; diameter of the nucleus 50µm, of the calymma 300-400µm.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Actissa larcoides under the subgeneric name Actilarcus, 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 larcoides compiled by the radiolaria@mikrotax project team viewed: 19-4-2021

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