Amphinema turrida (Mayer, 1900)

Figs 3 A-D

Dissonema turrida Mayer, 1900: 44, pl. 2 figs 3-4. – Mayer, 1910: 116, pl. 10 fig. 1, pl. 22 fig. 1.

Stomotoca turrida . – Mayer, 1915: 199, pl. 1 fig. 1.

Amphinema turrida . ‒ Schuchert, 2007: 312, fig. 48.

Examined material: 02-JUL-2018; 1 specimen photographed; approximately 6 mm; not collected .

Observations: Amphinema medusa, approximately 6 mm high, with elongated, folded gonads that extend along 5/6 of radial canals (Fig. 3 A-B); manubrium about half the height of the subumbrella, simple cruciform mouth with a few folds; two opposite tentacles, long, hollow, base laterally compressed and clasping bell margin, no abaxial spur, large red abaxial ocellus; about 12 rudimentary bulbs on bell margin, each with a large, red ocellus (Fig. 3B). Adradial and interradial rudimentary bulbs bearing a thin cirrus originating in the middle of the bulb (Fig. 3C).

Distribution: Florida and Bahamas; Mediterranean; Torres Strait; Papua New Guinea; Japan; Pacific Side of Mexico; Chile (Schuchert, 2007). Type locality: USA, Florida, Dry Tortugas archipelago.

Remarks: Amphinema turrida has recently been redescribed and discussed by Schuchert (2007). Most Pacific populations lack the cirri and their status needs to be re-evaluated using genetic data.