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Mycale (Mycale) macrochela Burton 1932

Description

provided by NMNH Antarctic Invertebrates

“Mycale macrochela, sp.n. (Plate LI, fig. 6).

Holotype. B.M. 28.2.15.827.

Occurrence. St. 170: Clarence Island, 342 m.

DIAGNOSIS. Sponge lamellar with large oscules, up to 8 mm. in diameter and with conspicuous membranous collar, scattered over one surface; surface even, minutely hispid; texture firm, friable; colour, in spirit, dark greenish grey; skeleton a loose reticulation of bundles of subtylostyli, with brushes of subtylostyli at surface; sub­tylostyli 0.53 by 0.017 mm.; anisochelae 0.07, 0.035 and 0.022 mm. chord; sigmata 0.1 mm. chord; trichodragmata 0.035 mm. long.

REMARKS. The species is remarkable for its plate-like external form and for the form of the anisochelae. It resembles M. simonis, from South Africa, most closely in the form of the anisochelae, but differs considerably from this species in all other respects.”

(Burton, 1930)