TRIGONOSTOMUM NATASCHAE SP. NOV.

(FIG. 7G)

Alternative species name: trigonostomum-nataschae sp. nov.

Holotype: Whole mount, Kerguelen (France, subantarctic territory), Port Raymond, tidepool with fine sand and silt, mixed with shells, 23 November 1992 (LUC no. 227).

Other material: Observations on live material from Kerguelen.

Etymology: Dedicated to Mrs Natascha Steffanie, technical assistant at LUC, Diepenbeek (Belgium).

Diagnosis: Trigonostomum species with copulatory organ ± 78 Mm long. Stylet ± 104 Mm long, proximally bent over, 180∞ and with a crest. Mantle with two blunt plates (shorter than the stylet) surrounds only the distal part of the stylet. Bursal appendage ± 65 Mm long, with proximal barrel-like part and very narrow tubules, forming two curved bundles of tubules distally.