Diversity of chemosymbiotic bivalves on coral reefs: Lucinidae (Mollusca, Bivalvia) of New Caledonia and Lifou Author Glover, Emily A. Author Taylor, John D. Department of Zoology, The Natural History Museum, London SW 7 5 BD (United Kingdom) emily. glover @ dial. pipex. com j. taylor @ nhm. ac. uk taylor@nhm.ac.uk text Zoosystema 2007 29 1 109 181 journal article 10.5281/zenodo.5392295 1638-9387 5392295 Gonimyrtea fidelis n. sp. ( Figs 12 C-F; 13B) TYPE MATERIAL. — Holotype : 1 LV, L 10.1 mm , H 10.4 mm , T 3.7 mm , ( MNHN ). Paratype : from type locality, 1 RV, L 8.3 mm , H 8.2 mm , T 2.5 mm ( MNHN ). TYPE LOCALITY. — Loyalty Islands , MUSORSTOM 60, stn DW 441, 20°54’S , 167°17’E , 80 m . ETYMOLOGY. — Latin fidelis , “to have faith in”, a reference to the type locality of Loyalty Ridge. MATERIAL EXAMINED. — Koumac. 2 stn, 10-60 m , 5 v. Lifou. 4 stn, 10-120 m , 5 v. DESCRIPTION Shells small,H to 10.4mm ,L to 10.1 mm , subcircular, inflated (T/L 0.37), umbones prominent, central. Sculpture of closely spaced,low, regular,commarginal lamellae.Lunule lanceolate, slightly impressed. Ligament short, shallowly inset. Hinge: RV with two cardinal teeth, the posterior large and triangular, the anterior a small narrow ridge; anterior lateral tooth present but indistinct. LV with two cardinal teeth, the anterior larger, posterior a narrow ridge; small anterior lateral socket. Anterior adductor scar short, detached from pallial line for 1/4 of length. Traces of adductor scars marked by radial ridges on interior of shell. Posterior scar ovate. Pallial line faint, entire. Shell edge smooth but with marginal groove.