A new species of onuphid worm, Onuphis punggolensis, from Sungei Punggol, Singapore is described. This is the first record of the genus Onuphis and is the third onuphid species to be documented from Singapore waters. The new species is related to O. eremita Audouin
and Milne Edwards and its congeners. The main differences lie in the absence of interramal papillae at the base of dorsal cirri in setigers 4 to 10, pigmentation pattern of the dorsal region, the presence of subdermal spots along the length of the occipital ceratophores, and relatively fewer
number of ceratophore rings.
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