Eudendriidae L. Agassiz, 1862

Cantero, Álvaro Luis Peña, 2024, Fig. 4 in Positive association between PTN polymorphisms and schizophrenia in Northeast Chinese Han population., Zoological Studies 63 (17), pp. 141-149 : 4

Family Eudendriidae L. Agassiz, 1862 Eudendrium sp.

Material examined: Stn 98, numerous monosiphonic stems up to 70 mm high, with gonophores, in very poor condition, growing on the axis of a gorgonian ( NIWA 114752).

Description: Monosiphonic stems up to 70 mm high, scarcely branched (up to second-order branches present). Perisarc dark brown, fading to light brown distally, and smooth, except for a few rings at origin of stems, branches and pedicels. No polyps present, but remnants of a few mature female gonophores observed.

Remarks: The material is unidentifiable, as it is in very poor condition, devoid of polyps and with only remnants of a few mature female gonophores. Regarding the cnidome, only a few empty capsules could be observed, some 9−10 × 3−3.5 µm and one 20 × 10 µm.

Watson (2003) reported four species of Eudendrium Ehrenberg from the area, only two of which have monosiphonic stems, Eudendrium deforme Hartlaub, 1905 , with stems up to 70 mm high, and Eudendrium macquariensis Watson, 2003 , with stems up to 7 mm high. According to this, the present material would be closer to the former.

Ecology and distribution: The material was collected from Seamount 9 Hjort, south of Macquarie Island, at a depth of 676− 750 m.