Gnathia falcipenis Holdich and Harrison, 1980

Gnathia falcipenis Holdich and Harrison, 1980: 223, figs 3a–h, 3j, 3k. — Poore and Lew Ton, 2002: 189.

Material examined. Lizard Island Group: 2 3, patch reef off Palfrey Is, 14.68345°S, 145.44147°E, 16 April 2008, fist-sized rubble on flat bottom between bommies, 2–3 m, CReefs stn CGLI 034B, coll. N. L. Bruce (MTQ W14120). 1 3, lagoon entrance in from Seabird Islet, 14.68900°S, 145.46710°E, patch reef, 19 April 2008, medium small rubble, 1–3 m, CReefs stn CGLI 041B, coll. N. L. Bruce (MTQ W14121).

Outer barrier reefs: 1 3, 1 Ƥ, Day Reef, 14.48356°S, 145.5459°E, 13 February 2009, outer reef, flat rubble in gully, 10 m, CReefs stn LIZ09 04A, coll. N.L. Bruce & M. Błażewicz-Paszkowycz (MTQ W31379).

Remarks. The species was only found at shallow waters, 1–10 metres, in coral rubble. Holdich and Harrison (1980) reported the species from Chinaman’s Head, Lizard Island at depths of 3.7 m and from a semi-permanent log on the mid-shore at Magnetic Island off Townsville.

Distribution. Lizard Island and surrounding region and Magnetic Island; at depths of 1 to 10 metres on inner, mid-shelf and outer reefs.