elongatus, Hippocampus Castelnau [F. L.] 1873:144 [Proceedings of the Zoological and Acclimatisation Society of Victoria, Melbourne v. 2; ref. 758] Fremantle, Western Australia. Holotype (unique): MNHN A-4536. Kuiter's 2001:330 [ref. 25900] reasons for reversing the selection of subelongatus over elongatus by Lourie et al. 1999 is not supported by the Code. See Kuiter 2001:330 [ref. 25900] for discussion of type. •Synonym of Hippocampus angustus Günther 1870 -- (Paxton et al. 1989:421 [ref. 12442]). •Wrongly valid as Hippocampus elongatus Castelanu 1873 -- (Kuiter 2001:330 [ref. 25900]). •Synonym of Hippocampus subelongatus Castelnau 1873 -- (Lourie et al. 1999:123 [ref. 23993], Paxton et al. 2006:828 [ref. 29073], Kuiter 2009:94 [ref. 30404], Lourie et al. 2016:41 [ref. 34632]). Current status: Synonym of Hippocampus subelongatus Castelnau 1873. Syngnathidae: Syngnathinae. Habitat: marine.