An annotated checklist of ophiuroids (Echinodermata) from Guam

Abstract—Forty-seven ophiuroid species are recorded from the island of Guam. One species, Ophiarthum pictum, is known only from the literature. Ophiuroids identified as Ophiolepis cf. cincta may represent an undescribed species. Specimens of Ophiocoma cf. erinaceus and Ophionereis cf. fusca, respectively, display previously unrecorded structural and color characters. Amphiura duncani was found only in Apra Harbor and may be introduced