grandiceps, Hippocampus Kuiter [R. H.] 2001:336, Fig. 52 [Records of the Australian Museum v. 53; ref. 25900] Western Booby Island, Gulf of Carpentaria, Queensland, 10°44'S, 141°53'E, depth 10 meters. Holotype: NTM S13273-019. Paratypes: AMS I.15557-075 (3); NTM S13274-007 (3); QM I.12287 (1), I.26319 (1), I.30583 (1). •Valid as Hippocampus grandiceps Kuiter 2001 -- (Paxton et al. 2006:826 [ref. 29073], Kuiter 2009:95 [ref. 30404], Hamilton et al. 2016:Supplement 2 [ref. 35615]). •Synonym of Hippocampus angustus Günther 1870 -- (Lourie 2016:88 [ref. 34505], Lourie et al. 2016:15 [ref. 34632]). Current status: Synonym of Hippocampus angustus Günther 1870. Syngnathidae: Syngnathinae. Distribution: Australia: eastern Gulf of Carpentaria (if valid). Habitat: marine.