Fungiacyathus (Fungiacythus) stephanus (Alcock, 1893)

Bathyactis stephanus Alcock, 1893: 149, pl. 5. figs 12, 12A.

Bathyactis stephana . - Alcock 1898: 11, 28-29, pl. 3.

Bathyactis sibogae Alcock, 1902a (in part). - Alcock 1902c: 38 (in part).

Bathyactis symmetrica . - Gardiner and Waugh 1939: 230-231 (in part).

Bathyactis stephana . - Gardiner and Waugh 1939: 232.

Fungiacyathus (Fungiacythus) stephanus . - Cairns 1989a: 7-9, pl 1, figs A-K, pl. 2, figs A-N. - Cairns and Keller 1993: 218, 230. - Cairns 1995: 31-32, pl 1, figs A-C. - Cairns and Zibrowius 1997: 68-69. - Cairns 1998. 369. -Cairns 1999. -Cairns 54-56. -Cairns 2004a: 271. - Kitahara and Cairns 2021: 162-164, figs 79E-F, 80.

Type locality.

Off Krishna Delta, Bay of Bengal; (HMS ‘Investigator’ stn. 133: 15°43'30"N, 81°19'30"E); 1240 m (Cairns 1989a).

Type material.

The holotype is presumed to be deposited at the IM (Cairns 1989b).

Material examined.

None.

Distribution.

Regional: Eastern margin of South Africa, off Natal (Gardiner and Waugh 1939); depth unknown. Elsewhere: Mozambique (Cairns and Keller 1993); Gulf of Aden (Gardiner and Waugh 1939); Japan (Cairns 1994 a); Bay of Bengal (Alcock 1893); Philippines; Indonesia (Cairns 1989b; Cairns and Zibrowius 1997); Malaysia; Wallis and Futuna; Vanuatu (Cairns 1999a); Australia; New Zealand (Cairns 1995, 1998); 245-2000 m.

Remarks.

Fungiacyathus (F.) stephanus was first reported from South Africa as Bathyactis stephana (Gardiner and Waugh 1939). Subsequently, Cairns and Keller (1993) also reported on records from the region. Of the five other Recent species ( F. fragilis Sars, 1872, F. paliferus (Alcock, 1902a), F. pusillus pusillus ( Pourtalès, 1868), F. pusillus pacificus Cairns, 1995, F. multicarinatus Cairns, 1998, F. sandoi Cairns, 1999), F. stephanus resembles F. fragilis but differs in having smaller P2, its S1-2 bearing higher septal lobes, and the concave-based forms having a marginal shelf.