Parvamussium undosum Dijkstra, 1991

Parvamussium undosum Dijkstra, 1991: 18, figs 53-61.

MATERIAL EXAMINED. — Indonesia. Banda Sea, 250- 290 m, holotype lv (RMNH 56550). Marotiri. BENTHAUS, stn DW 1884, 27°54’S, 143°33’W, 570-620 m, 1 lv. — Stn DW 1887, 27°52’S, 143°33’W, 750-1000 m, 1 lv. Rapa Est. BENTHAUS, stn DW 1889, 27°37’S, 144°16’W, 600-620 m, 1 lv. Récif Neilson. BENTHAUS, stn DW 1924, 27°01’S, 146°05’W, 340-800 m, 4 lv. — Stn DW 1925, 27°00’S, 146°05’W, 560-790 m, 2 lv. Banc Lotus. BENTHAUS, stn DW 1951, 23°49’S, 147°53’W, 206-450 m, 4 lv, 4 rv. Banc Arago. BENTHAUS, stn DW 1979, 23°22’S, 150°44’W, 176-340 m, 1 rv. Rurutu, Mont du Lotus. BENTHAUS, stn DW 1988, 22°36’S, 150°59’W, 451-456 m, 1 lv, 1 rv. — Stn DW 1992, 22°34’S, 151°00’W, 442-444 m, 1 spm. Rurutu. BENTHAUS, stn DW 1999, 22°25’S, 151°22’W, 270-500 m, 5 lv, 2 rv. — Stn DW 2000, 22°25’S, 151°22’W, 270-480 m, 3 spms. — Stn DW 2003, 22°28’S, 151°19’W, 250-330 m, 1 lv.

DISTRIBUTION. — Indonesia, Solomon Islands, Norfolk Ridge, Wallis and Futuna (Dijkstra 2001: 87; Dijkstra & Maestrati 2008: 96). Depth range 250-600 m (dead). Now also Austral Islands (new record), alive at 270- 442 m depth.

REMARKS

The radial lirae and commarginal lamellae of the present specimens are somewhat weaker than in the type material from Indonesia. Other characters are identical.