Figure 13 in The phyllophorid sea cucumbers of southern Australia (Echinodermata: Holothuroidea: Dendrochirotida: Phyllophoridae)

Figure 13. Photos of preserved specimens. a, Massinium melanieae O'Loughlin sp. nov. (holotype NMV F174897); b, Massinium vimsi O'Loughlin sp. nov. (holotype, NMV F76629) (insert: form of the calcareous ring plates); c, Massinium watsonae O'Loughlin sp. nov. (holotype, NMV F97435); d, calcareous ring, stone canal (along alimentary canal) and madreporite, and 2 polian vesicles (top left corner) of Massinium watsonae (TMAG H1988); e, colour morph of Massinium watsonae (NMV F174899) (insert: form of the calcareous ring plates); f, exceptional calcareous ring from specimen of Phyllophorella thyonoides (H. L. Clark, 1938) with posterior prolongations joined as in Massinium species (WAM Z31975) (insert: form of the calcareous ring plates).图13 馆藏标本照片。a. 梅拉尼亚马西姆虫（Massinium melanieae）O'Loughlin新种（正模：NMV F174897）；b. 维姆斯马西姆虫（Massinium vimsi）O'Loughlin新种（正模：NMV F76629）（插图：钙质环板形态）；c. 沃森马西姆虫（Massinium watsonae）O'Loughlin新种（正模：NMV F97435）；d. 标本编号TMAG H1988的沃森马西姆虫的钙质环、沿消化道走行的石管与筛板，以及2个波里氏囊（左上角）；e. 标本编号NMV F174899的沃森马西姆虫色型个体（插图：钙质环板形态）；f. 标本编号WAM Z31975的Phyllophorella thyonoides（H·L·克拉克，1938）标本，其特殊钙质环的后部延长结构与马西姆虫属（Massinium）物种一致（插图：钙质环板形态）