New Caledonian Veneridae Ü 
997, Іру, 2rv, Пу, 23 m; stn 1001, Іру, 89 m; stn 1006, 2ру, 25 m; stn 1010, Ipv, 16 m; stn 1015, 
Іру, 25 m; stn 1017, 2pv, Пу, 21 m; stn 1002, 3pv, 78 m; stn 1007, 2pv, 24 m; stn 1025, 6pv, 28 
m); Secteur de Balabio (Lagon: stn 1045, Іру, 12 m); Secteur des Belep (Lagon: stn 1063, 3pv, 4гу, 
2lv, 31 m; stn 1104, Іру, 41у, Irv, 22 m; stn 1105, 3pv, Згу, 6lv, 25 m; stn 1118, Іру, 2rv, 3lv, 30 
m; stn 1126, 21у, 2гу, 41 m; stn 1134, Іру, 40 m; stn 1139, Іру, 39 m; stn 1140, 11У; stn 1145, 
1Зру, Srv, Alv, 38 m; stn 1154, 3rv, 5lv, 40 m; stn 1156, Srv, 3lv, 55 m; stn 1157, Іру, 3lv, 2rv, 48 
m; stn 1158, Іру, 9гу, 21у, 48 m; stn 1168, 3pv, 6lv, 4rv, 50 m; stn 1169, Іру, 47 m; stn 1169, 2rv, 
47 m; stn 1174, Пу; stn 1181, 3pv, 3rv, Пу, 45 m; stn 1182, 3pv, Irv, 48 m; stn 1189, Ipv, Пу, 20 
m; stn 1190, 2rv, 21у, 40 m; stn 1191, 11У, Irv; stn 1196, Ару, 5lv, 4rv, 30 m; stn 1197, Irv; stn 
1198, Іру, 42 т; stn 1205, Іру, 38 m; stn 1217, Іру, 2rv, 30 m). BANC CAPEL (Musorstom 5: stn 
DW264, Irv). Ride des Loyaute: (Musorstom 6: stn DW430, 3pv, 2гу, 3lv, 30 m; stn DW431, Іру, 
21 m; stn DW434, 3pv, Irv, 2lv, 23 m; stn DW435, 15ру, 3rv, 71у, 32 m; stn DW436, 3pv, Irv, 3lv, 
33 m; stn 437, 3rv). 
Remarks: Prashad (1932) outlined the taxonomic problems associated with this species. Lioconcha 
ornata has been confused in the literature by various authors. The typical ornata, as figured by recent 
authors (Abbott and Dance, 1982 [as L. ornata Lamarck, 1817]; Oliver, 1992; Lamprell and 
Whitehead, 1992), is attenuate posteriorly with an extended posterior margin and widely rounded 
ventral margin. However it should be noted that the species displays great inter-populational 
Variation in shape, convexity and colour pattern. The name Lioconcha picta (Lamarck, 1818) has 
also been used by some authors for this species. Lamarck (1818) described L. picta from the same 
illustrations as Dillwyn's ornata (Lister Conchyliorum t.259. f.95 and Chemnitz Conchylien. 6. t.35. 
£373, 376 and 381) and the latter name has priority. L. ornata (Lamarck, 1818) is a synonym of L. 
Castrensis (Linnaeus, 1758). 
Lioconcha (Sulcilioconcha) philippinarum (Hanley, 1844) 
(Figure 2g-h) 
Cytherea philippinarum Hanley, 1844: 110; Hanley, 1856: (15, Ғ.36. 
Diagnosis: Shell solid, length to 27.7 mm. Sculpture of strong rounded, concentric ridges. Colour 
rown, with darker brown radial rays extending from the umbones; interior white. 
MUERE examined: Nouvelle-Caledonie: Baie de St vincent (Lagon: stn 186, 11v); Secteur de Canala 
(Lagon: stn 703, Ipv, 40 m); Grand Recif Mengalia (Lagon: stn 839, 2ру, Пу, 37 m; stn 849, Іру, 
У, Irv, 41 m); Secteur des Belep (Lagon: stn 1213, Іру, Irv, 32 m). 
Remarks: The relatively few records of this species among this New Caledonian material appears to 
€present the southern limits of its range which extends through the Philippines to Japan. 
Lioconcha (Sulcilioconcha) melharteae sp. nov. 
(Figure 3a-c) 
Etymology: Named for Dr Mel Harte in honour of her work on the Veneridae. 
Diagnosis: Shell to 21 mm in length, 18.5 mm in height and 14.7 mm in width (paired valves); 
GE ovate, equivalve, inequilateral. Umbones situated anteriorly, moderately inflated and solid, 
So Ique, Prosogyrate. Lunule widely cordate, surrounded by an impressed line. Escutcheon long, 
rrow, impressed. Antero-dorsal margin short, steeply sloping, widely rounded terminally at the 
antero-ventra] margin; postero-dorsal margin moderately convex, sharply sloping, broadly angulate 
Posteriorly; ventral margin widely convex, slightly concave posteriorly. Shell with an ill-defined 
Posterior fold extending from the umbones to the postero-ventral margin, with sculpture of dense 
