CATALOG OF ORIGINAL DESCRIPTIONS: Alacorys friderici 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 -> Alacorys -> Alacorys friderici
Other pages this level: A. bismarckii, A. carcinus, A. dodecantha, A. enneacantha, A. friderici, A. gigas, A. guilelmi, A. hexacantha, A. hexapleura, A. lutheri, A. octacantha, A. polyacantha

Alacorys friderici

Citation: Alacorys friderici Haeckel 1887
Rank: species
Type specimens: pl.65, fig.1
Type repository: No information given
Described on page(s) : p.1372
Family (traditional): not-known

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Current identification:

Original Description
Shell conical, rough, with sharp collar stricture. Cephalis subspherical, with a large, oblique, prismatic horn, twice the length. Thorax campanulate, with regular, circular pores (six to eight in its length). Abdomen wider, campanulate, with a small number of very large pores (three to four in the course of its length). Peristome with six very large divergent feet, which are about as long as the shell, cylindrical, irregularly curved. The specimen figured was observed living, with expanded pseudopodia. The central capsule exhibited four large pear-shaped lobes, filling up the shell-cavity; each contained an oil-globule in the thoracic part. The undivided cephalic part of the capsule enclosed a nucleus, from which four lobes protruded through the four collar pores into the thorax.

Length of the three joints, a 30, b 60, c 80µm; breadth, a 40, b 90, c 140µm.

Etymology: Dedicated to Frederick the Great, the Royal Philosopher of Potsdam.

Editors' Notes
Haeckel listed Alacorys frederici under the subgeneric name Hexalacorys, 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


Alacorys friderici compiled by the radiolaria@mikrotax project team viewed: 27-2-2021

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