Psolidium disciformis ...

• Main Authors: O'Loughlin, P. Mark, Ahearn, Cynthia
• Format: Text
• Language: unknown
• Published: Zenodo 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Holothuroidea; Dendrochirotida; Psolidae; Psolidium; Psolidium disciformis; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.5281/zenodo.10878557; https://zenodo.org/doi/10.5281/zenodo.10878557

Psolidium disciformis (Théel) Figures 1a, b; 4a Psolus disciformis Théel, 1886: 85, pl. 9 fig. 6. Theelia disciformis.— Ludwig, 1892: 350.— Perrier, 1902: 494. Theelia (?Psolidium) disciformis.— Ludwig, 1894: 136.— Ludwig, 1898: 52. Psolidium disciformis.— Deichmann, 1947: 337.— Pawson, 1969: 38, map 3. Material examined. Syntypes (2): Chile, Challenger stn 311, 52°45’30"S 73°46’W, 448 m, BM(NH) [18]86.10.2.86. Diagnosis. Psolidium species up to 18 mm long (25 mm in Théel, 1886); dorsal and lateral scales conspicuous, up to 1 mm wide; dorsal and lateral tube feet numerous, conspicuous, up to 2 penetrate each scale. Sole: outer peripheral single series of smaller tube feet; inner peripheral single series of larger tube feet; zig-zag series of mid-ventral (sole) radial tube feet. Sole ossicles: numerous irregularly oval to round, disc-like smooth plates, variably with few small perforations, up to 220 μ m long; rare shallow cupped crosses and more numerous 4-holed regular shallow cups with blunt marginal ... : Published as part of O'Loughlin, P. Mark & Ahearn, Cynthia, 2008, Antarctic and Sub-Antarctic species of Psolidium Ludwig (Echinodermata: Holothuroidea: Psolidae), pp. 23-42 in Memoirs of Museum Victoria 65 on pages 25-27, DOI: 10.24199/j.mmv.2008.65.2, http://zenodo.org/record/10665899 ...