First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species Author Ekins, Merrick Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia & School of Biological Sciences, University of Queensland, St Lucia, Queensland, 4072 Australia & Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Queensland, Australia Author Baker, Soraya Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia Author Hooper, John N. A. Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia & Griffith Institute for Drug Discovery, Griffith University, Brisbane 4111, Queensland, Australia text Zootaxa 2023 2023-07-20 5318 3 382 400 http://dx.doi.org/10.11646/zootaxa.5318.3.4 journal article 56577 10.11646/zootaxa.5318.3.4 0a1eebb1-ceb1-4546-b217-c143cc076b4c 1175-5326 8166946 6CFEC285-1E75-4061-997B-855E799A432A

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).

Specimen	Location	Depth (m)	Styles (μm)	Diancistras I (μm)	Diancistras II cyrtancistra- like diancistra /Sigmancistras (μm)	Sigmas (μm)
H. (V.) acerata Lévi, 1993, description	New Caledonia	675–680	330–390 x 7–8	190–200	42–45	18
H. (V.) acerata, holotype, this study	New Caledonia	675–680	270–(355)–380 x 10–(11)–12, n=21	170–(189)–200 x 10–(11)–12, n=12	36–(44)–50 x 4–(6)–8, n=11	17 x 1, n=1
H.(V.) umisachii Ise, Woo, Tan & Fujita, 2019	Japan	778–682	249–358 x 8–12	158–207 x 11–16	48–75 x 4–9	29–36 x 2
H. (V.) novacula sp. nov. QM G337915	Queensland, Australia	880–1100	394–(459)–548 x 6.0–(8.7)– 11.0, n=26	139–(189)–229 x 9.6–(12.0)– 15.6, n=31	47.4–(63.4)–84.6 x 3.5–(5.3)–7.8, n=30	20–(26)–30 x 1–(1.25)–1.5, n=5
H. (V.) novacula sp. nov. QM G326453	Tasmania, Australia	800–1000	350–(404)–466 x 6.9–(9.0)– 11.9, n=31	189–(206)– 227, x 8.3– (10.3)–14.1, n=25	46.5–(66.6)–79.8 x 3.4–(5.4)–7.2, n=27	25–(31)–39 x 0.9–(1.2)–1.5, n=25
H. (V.) novacula sp. nov. QM G324761	Tasmania, Australia	881–1154	350–(395)–452 x 6.4–(8.9)– 11.7, n=30	129–(164)–203 x 7.0–(9.1)– 11.0, n=29	53.4–(59.8)–65.5 x 4.4–(5.6)–6.7, n=24	23–(30)–33 x 1.0–(1.3)–1.8, n=29