Halecium corrugatissimum Trebilcock 1928

Halecium corrugatissimum Trebilcock, 1928

(Fig. 1 S)

Material examined. Corral, Chaihuin/Huiro, lat. -39.95000, long. -73.61667, 27.x.2011, 8‒ 10 m, sample S07: five minute stems, each ca. 1.5 mm high, carrying one or two female gonothecae, on alga (MHNG-INVE-86209).

Remarks. For the latest description and synonymy, see Schuchert (2005). Each female gonotheca in the present material carries 4 or 5 spherical oocytes (180–215 µm in diameter). The hydrothecal rim is distinctly everted, and this feature could also be observed upon a re-examination of the New Zealand material studied by Schuchert (P. Schuchert, pers. comm.).

3. The cnidomes in samples from Chile and Tristan da Cunha are identical to that illustrated by Galea et al. (2009, Fig. 4 M) for a material that we assign now to S. bilabiata, as well as to that of S. pedunculata (Jäderholm, 1904) from Antarctica [see Galea & Schories (2012b), Fig. 3Z3].

4. The type material of this species was re-examined and illustrated by Hartlaub (1905, Figs U1–W1).

5. The type locality cited by Marktanner-Turneretscher (1890), situated at 6° S, 38° W, corresponds to an inland locality.

Distribution in Chile. The present material from Corral is the first Chilean record, as well as the first record of the species outside its known range of distribution.

World records. New Zealand (Schuchert 2005).