The phyllophorid sea cucumbers of southern Australia (Echinodermata: Holothuroidea: Dendrochirotida: Phyllophoridae) Author O’Loughlin, P. Mark Author Barmos, Shari Author VandenSpiegel, Didier text Memoirs of Museum Victoria 2012 2012-12-31 69 269 308 https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-69-2012/pages-269-308/ journal article 10.24199/j.mmv.2012.69.05 1447-2554 12212378 Massinium Samyn and Thandar, 2003 Massinium Samyn and Thandar, 2003: 136 .— Samyn et al., 2010: 2 . Material examined . Massinium granulosum Samyn and Thandar, 2010 . Holotype and paratype . Queensland , Moreton Bay , Stradbroke I. , intertidal seagrass, 14 Nov 1977 , AM J13578 (2); Queensland , 32 km NNE of Double Island , AM J2093 (1). Massinium magnum (Ludwig, 1882) . Queensland , Heron I. , 10 m , sandy rubble, 21 Nov 1974 , AM J9490 (1). Diagnosis ( Samyn et al. 2010 ). Dendrochirotid holothuroids with 20 tentacles arranged in two circles of 10 + 10; anus usually encircled by calcareous teeth; calcareous ring elongate, tubular, with both radial and interradial plates fragmented into a mosaic of small pieces and prolonged posteriorly, with the posterior processes distally linked to processes of neighbouring plates forming a loop beneath the water vascular ring; polian vesicles elongate, usually 4; ossicles of mid-body wall comprise granuliform rods, and/or rosette-shaped deposits; tables present in juveniles or occasionally in adults as scarce reduced deposits. Type species . Massinium maculosum Samyn and Thandar, 2003 (original designation). Other species . Massinium albicans Samyn et al. 2010 ; M. arthroprocessum (Thandar, 1889) ; M. dissimilis ( Cherbonnier, 1988 ) ; M. granulosum Samyn et al., 2010 ; M. magnum (Ludwig, 1882) ; M. melanieae O’Loughlin sp. nov. ; M. vimsi O’Loughlin sp. nov. ; M. watsonae O’Loughlin sp. nov. Remarks . We have not further emended the generic diagnosis in Samyn et al. 2010 but note the possibly polyphyletic nature of Massinium Samyn and Thandar, 2003 , with the variety of body wall ossicle forms in the assigned species that include tables with 2-pillar spires, pseudobuttons, and thick granuliform rods.