The Azooxanthellate Scleractinia (Coelenterata: Anthozoa) of Australia Author Cairns, S. D. text Records of the Australian Museum 2004 56 259 329 journal article 2201-4349 Stephanocyathus (O.) weberianus (Alcock, 1902) Stephanotrochus weberianus Alcock, 1902a: 101–102 . ? Stephanocyathus nobilis .– Wells, 1958: 262 ( listed: NSW ); 1964: 109 ( listed: NSW ).– Veron, 1986: 607 ( listed ). Stephanocyathus (O.) weberianus .– Cairns, 1994: 57–58 , pl. 25d– f (synonymy, description); 1995: 68, pl. 17g –i ( SM ).–Cairns & Zibrowius, 1997: 119–120, figs. 14g ,h (synonymy, remarks).– Cairns, 1999a: 89–90 . New records . NEW SOUTH WALES : Kapala 76/24/03, 3, AM G16412 ; Kapala 79/20/13, 2, AM G15237 .— WESTERN AUSTRALIA : off Carnarvon (station “D30”), 3, depth unknown, WAM Z13253 ; Lady Basten 1031201, 1, WAM Z16003 . — QUEENSLAND : Franklin 06/88/04, 7: 1, MTQ G30350 , and 6, USNM 86561 ; Franklin 06/88/20, 1, AM G16664 ; Cidaris I 1-3, 31, MTQ G55649–55650 ; Cidaris I 1-4, 7, MTQ G55651 ; Cidaris I 44-3, 2, MTQ G55655 ; Cidaris I 45-2, 1, MTQ G55656 ; Cidaris I 49-2, 9, MTQ G55652 ; Cidaris I 49-3, 16, MTQ G55653–55654 ; Cidaris I 50-2, 17, MTQ G55657–55658 ; Cidaris I 50-3, 9, MTQ G55659–55660 ; 11°35'S 144°11'E , 1006 m , 1, USNM 78617 ; 25 miles (= 40 km ) ne Stradbroke Island , 710–730 m , 1, SAM TH8592 ; FNQ 79- 33, 5, AM G16523 . Types . The holotype is ZMA Coel. 1322. Type Locality: 8°43.1'S 127°16.7'E (Timor Sea), 828 m . Remarks . It is unknown what data (?specimens) Wells (1958 , 1964 ) had in hand when he reported Stephanocyathus nobilis from New South Wales . Stephanocyathus nobilis and S. weberianus are quite similar and have been confused before ( Cairns, 1994 ), but S. nobilis has not yet been substantiated to occur off Australia . Wells may have observed specimens of S. weberianus , not S. nobilis . Stephanocyathus weberianus and the previously discussed species, S. coronatus , are also quite similar, as discussed by Cairns (1995) . To reiterate, S. weberianus can be distinguished by having 12–18 costal projections integrated into a continuous basal rim (vs 12 discrete, complexly ornamented costal tubercles); less exsert S1–2; and a smooth, flat (not convex, costate) base. Off eastern Australia the species are also separated bathymetrically, S. weberianus found only shallower than 1050 m , S. coronatus deeper than 1050 m .