TABLE 1. A in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species

TABLE 1. A comparison of location, depth and spicules between the original descriptions of H. (V.) acerata Lévi, 1993, H. (V.) umisachii Ise, Woo, Tan & Fujita, 2019, and the recently collected Australian specimens of H. (V.) novacula sp. nov.. Measurements are Minimum-(Average)-Maximum of the spicules (μm).
SpecimenLocationDepth (m)Styles (μm)Diancistras I (μm)Diancistras II cyrtancistra- like diancistra /Sigmancistras (μm)Sigmas (μm)H. (V.) acerata Lévi, 1993, descriptionNew Caledonia675–680330–390 x 7–8190–20042–4518H. (V.) acerata, holotype, this studyNew Caledonia675–680270–(355)–380 x 10–(11)–12, n=21170–(189)–200 x 10–(11)–12, n=1236–(44)–50 x 4–(6)–8, n=1117 x 1, n=1H.(V.) umisachii Ise, Woo, Tan & Fujita, 2019Japan778–682249–358 x 8–12158–207 x 11–1648–75 x 4–929–36 x 2H. (V.) novacula sp. nov. QM G337915Queensland, Australia880–1100394–(459)–548 x 6.0–(8.7)– 11.0, n=26139–(189)–229 x 9.6–(12.0)– 15.6, n=3147.4–(63.4)–84.6 x 3.5–(5.3)–7.8, n=3020–(26)–30 x 1–(1.25)–1.5, n=5H. (V.) novacula sp. nov. QM G326453Tasmania, Australia800–1000350–(404)–466 x 6.9–(9.0)– 11.9, n=31189–(206)– 227, x 8.3– (10.3)–14.1, n=2546.5–(66.6)–79.8 x 3.4–(5.4)–7.2, n=2725–(31)–39 x 0.9–(1.2)–1.5, n=25H. (V.) novacula sp. nov. QM G324761Tasmania, Australia881–1154350–(395)–452 x 6.4–(8.9)– 11.7, n=30129–(164)–203 x 7.0–(9.1)– 11.0, n=2953.4–(59.8)–65.5 x 4.4–(5.6)–6.7, n=2423–(30)–33 x 1.0–(1.3)–1.8, n=29