Thyone Oken, 1815

O’Loughlin, P. Mark, Harding 1, Caroline & Paulay, Gustav, 2016, The sea cucumbers of Camden Sound in northwest Australia, including four new species (Echinodermata: Holothuroidea), Memoirs of Museum Victoria 75, pp. 7-52 : 35

Thyone Oken, 1815

Diagnosis (emended in O’Loughlin et al. 2012 from Pawson and Miller 1981). Tentacles 10; tube feet scattered on body wall, never restricted to radii; calcareous ring tubular with long posterior prolongations comprising a mosaic of small pieces; body wall ossicles tables with a spire of one or two pillars.

Type species. Holothuria fusus O. F. Müller, 1776 (monotypy).

Northern Australia species of Thyone reported in Rowe & Gates 1995 (type locality added). T. axiologa H. L. Clark, 1938 (Broome) ; T. dura Koehler & Vaney, 1908 (W India) (junior synonym T. alba H. L. Clark, 1938 , by Heding 1940 (Broome)); T. grisea H. L. Clark, 1938 (Cape Bossut, N Australia); T. micra H. L. Clark, 1938 (Broome) ; T. papuensis Théel, 1886 (Torres Strait).

Remarks. We note in the Introduction the recent ruling by the ICZN that Thyone Oken, 1815 is now an available taxon. Pawson & Miller (1981) remarked on the need for a revision of the “supergenus” Thyone . Arumugam (2012) has provided a morphological approach to the “management” of this “supergenus”.

Liao & Clark (1995) noted that the holotype specimen of Thyone papuensis is now very damaged and completely decalcified. The original description and illustrations of the species are not sufficient for diagnostic comparisons and we thus provide (below) a description of specimens that we judge to be Thyone papuensis .

We add Thyone pedata Semper, 1867 to northern Australia species of Thyone on the basis of a specimen identified by us from Joseph Bonaparte Gulf (NMV F173267; UF tissue lot MOL AF 1537). We note that Rowe (in Rowe & Gates 1995) referred Thyone perissa H. L. Clark, 1938 (WA) to Massinium magnum ( Ludwig, 1882) , and Thyone minuta H. L. Clark, 1938 to Stolus minutus (H. L. Clark, 1938) .