TABLE 6 in Eleven new heteroscleromorph Demospongiae (Porifera), and a new record of the tetractinellid Ancorina corticata, from Walters Shoal, a shallow seamount on the Madagascar Ridge in the South West Indian Ocean (SWIO)

TABLE 6. Comparative spicule dimensions of Halichondria (Halichondria) madagascarensis Payne, Samaai & Gibbons sp. nov. specimens and the species of Halichondria occurring in the region of interest (South Africa, WIO, Indo-Pacific). Micrometric values are in µm, n = 20 where applicable.
SpecimenOxea IOxea IIOxea IIIHalichondria (Halichondria) madagascarensis sp. nov.Holotype TS 2339416 (350–468) × 11 (6–14)244 (208–288) × 8 (6–10)144 (113–199) × 6 (5–7)Paratype TS 2336415 (315–469) × 8 (6–9)239 (203–284) × 7 (4–10)155 (113–173) × 6 (4–8)Paratype TS 2338435 (377–513) × 11 (8–14)255 (209–287) × 8 (6–10)136 (114–161) × 5 (4–6)Paratypes TS 2340444 (418–474) × 11 (8–13)238 (211–274) × 7 (5–9)127 (120–142) × 5 (4–6)Halichondria (Halichondria) capensis Samaai & Gibbons, 2005333 (319–355) × 12 (12)Halichondria (Halichondria) gilvus Samaai & Gibbons, 2005391 (328–437) × 15 (9–18)Halichondria (Halichondria) cartilaginea (Esper, 1794)(185–203 × 3–4Halichondria (Halichondria) lendenfeldi Lévi, 1961400–600 × 11–13Halichondria (Halichondria) aldabrensis Lévi, 1961275–650 × 4–10275–650 × 4–10Halichondria (Halichondria) tenuiramosa Dendy, 1922210 × 6Halichondria (Halichondria) prostrata Thiele, 1905300–320 × 9