Archimonocelis puertoricana Martens & Curini-Galletti, 1993 | Dec 1988 | | medium sand | about - 10 m, in poorly sorted medium sand among coral outcrops. |
Archimonocelis inopinata Martens & Curini-Galletti, 1993 | Dec 1988 | | coarse sand | about - 5 m, in channels among coral outcrops, poorly sorted coarse sand.. |
Archimonocelis glabrodorsata Martens & Curini-Galletti, 1993 | Dec 1988 | | medium sand | - 12, - 16 m, at the basis of coral outcrops, poorly sorted medium sand. |
Archilina opisthobursa Curini-Galletti & Martens, 1996 | Dec 1988 | | clean coarse sand | in the channel facing the main Island, lower intertidal. Numerous specimens. |
Minona bermudensis Ax & Sopott-Ehlers, 1985 | Dec 1988 | | | coarse, littoral sediments. |
Monocelis tabira Marcus, 1950 | Dec 1988 | | | Magueyes Island. |