Deania profundorum (Smith & Radcliffe, 1912) Arrowhead Dogfish Nasisqualus profundorum Smith & Radcliffe in Smith 1912: 681, pl. 53, fig. 3. Type locality: between Leyte and Mindanao Islands, Philippines. Local synonymy: Acanthidium natalense: Gilchrist, 1922: 49, fig. 2, pl. 7 (off Illovo River, KwaZulu-Natal, South Africa); Barnard, 1925: 51, fig. 1, pl. 3; Smith, 1937: 170 (of uncertain validity). Deania eglantina: Smith, 1949a: 58, fig. 49 (in part = D. quadrispinosa); Smith, 1965: 58, fig. 49. Deania natalensis: Penrith, 1969: 62. Deania profundorum: Bass et al., 1976: fig. 30; Compagno, 1984a: 67, fig.; Bass et al., 1986: 54, fig. 5.9; Compagno et al., 1989: 26, pl.; Compagno et al., 1991: 59; Ebert et al., 1992: 604; Compagno, 1999: 114; Compagno et al., 2005: 89, pl. 5; Ebert, 2013: 75, fig. 92; Ebert et al., 2013 a: 109, fig., pl. 7; Ebert & Mostarda, 2013: 28, fig.; Ebert, 2015: 66, fig. 70; Ebert & Mostarda, 2015: 22, fig.; Ebert & van Hees, 2015: 144; Compagno, 2016: 1175; Weigmann, 2016: 891. Deania natalense: Bigelow & Schroeder, 1948b: 106 (Natal, South Africa). South Africa voucher material: Acanthidium natalense: Syntypes: SAIAB [former RUSI] 2 (2 specimens). Deania profundorum [non-types]: SAIAB 26274, SAIAB 26275, SAIAB 26276, SAIAB 26277, SAIAB 26308, SAIAB 26335, SAIAB 26336, SAIAB 26436. South Africa distribution: Off the west coast (NC) and east coast (KZN). This species likely occurs off the entire South African coast along the upper continental slope. Remarks: The most common Deania species after D. calceus; both species are frequently caught mixed in large aggregations during research survey cruises. Conservation status: NT (2020).

Published as part of Ebert, David A., Wintner, Sabine P. & Kyne, Peter M., 2021, An annotated checklist of the chondrichthyans of South Africa, pp. 1-127 in Zootaxa 4947 (1) on pages 26-27, DOI: 10.11646/zootaxa.4947.1.1, http://zenodo.org/record/4614567