An annotated checklist of the chondrichthyans of Papua New Guinea Author White, William T. Author Ko’Ou, Alfred text Zootaxa 2018 2018-04-19 4411 1 1 82 journal article 30231 10.11646/zootaxa.4411.1 abf8082d-c179-4cb2-acc4-3cdef16c4341 1175-5326 1221878 255EE06E-3171-41F3-BB3D-E7D29537A292 Cephaloscyllium stevensi Clark & Randall, 2011 Steven’s Swellshark Cephaloscyllium stevensi Clark & Randall, 2011 : 25 , Figs 2 –7. Holotype: USNM 359091. Type locality: east coast of PNG. Local synonymy: Cephaloscyllium stevensi Clark & Randall, 2011 : 25 , Figs 2 –7; Ebert et al. , 2013 : 330, pl. 44 (Milne Bay and New Ireland); White et al. , 2018 : 100, figs (PNG). PNG voucher material: (7 spec.) CSIRO H 6820-01, female 445 mm TL, New Ireland , 2°41’ S , 150°31’ E , 240–274 m depth, between October 1988 and April 1995 ; NTUM 10323 , female 206 mm TL, north of Taviltae , Madang , 4°31’ S , 145°31’ E , 380–382 m depth, 17 Dec. 2012 ; NTUM 11495 , female 603 mm TL, east of Lat , East New Britain , 4°35’ S , 152°25’ E , 575–616 m depth, 26 Apr. 2014 ; USNM 329583, adult male 524 mm TL, USNM 358812 , adult male 543 mm TL, New Ireland , 2°41’ S , 150°31’ E , 240–274 m depth, between October 1988 and April 1995 ; USNM 358814 (head only), female 660 mm TL, Milne Bay , 10°15’ S , 151°03’ E , 17 Mar. 1993 ; USNM 359091 , adult female 586 mm TL, Milne Bay , 10°15’ S , 150°46.48’ E , 244 m depth, 15 Dec. 1993 . Remarks: Very similar to Cephaloscyllium signourum Last, Séret & White, 2008 from Queensland , Australia but differ slightly in some morphological characters and also at a molecular level (NADH2 sequences, G. Naylor, unpubl. data). Endemic to PNG .