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 gigas
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 gigas

Citation: Alacorys gigas Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.1374
Family (traditional): not-known

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Current identification:

Original Description
Shell thorny, with distinct collar stricture. Length of the three joints = 1: 4: 2, breadth = 1: 5: 4. Cephalis ovate, with a short, conical horn of about half the length. Thorax campanulate, thorny, with small, regular, circular pores, very similar to Cycladophora gigas, Ehrenberg (loc. cit., 1875, p.68, Taf. xviii. fig. 1). Abdomen truncate, conical, smooth, with irregular, roundish pores, and nine stout and straight, little divergent ribs, which are prolonged into nine cylindrical, pointed feet of the same length.

Length of the three joints, a 50, b 200, c 100µm ; breadth, a 50, b 250, c 200µm.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Alacorys gigas under the subgeneric name Ennealacorys, 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 gigas compiled by the radiolaria@mikrotax project team viewed: 7-3-2021

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