Genus Mesochaetopterus Potts, 1914

Records. Lizard Island: Chinamans Head (14°40′S 145°27′E) AM W.40780, AM W.40782 (14°36′S 145°38′E) AM W.40779; Lagoon drop off (14°42′S 145°28′E) AM W.40305; between Bird Islet and South Island (14°40′S 145°28′E) AM W.40781. Outer Barrier: Yonge Reef (14°36′S 145°37′E) AM W.40306 (14°36′S 145°38′E) AM W.40307.

Comments. Commonly seen in lagoonal sediments (Hutchings, personal observation).