Phanerophthalmus cylindricus (Pease, 1860)
20mm

This seems to match Phanerophthalmus cylindricus but we have done no anatomical work to try to confirm this. The specimen below was in a lagoon slope Halimeda patch. What may have been this species was first reported from Enewetak Atoll as Lathophthalmus smaragdinus by Marcus & Burch (1965).

Created 27 January 2007
Updated 13 December 2021

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