Gastroptychus sternoornatus (Van Dam, 1933)

Chirostylus sterno ­ornatus Van Dam, 1933: 15, figs. 21–23 [type locality: Kei Islands, Indonesia].

Material examined. NEW SOUTH WALES: AM P65625, 1 ovigerous female (7.0 mm), E of Broken Bay, 33°26’S, 152°06’E, 403 m, K80­11­01, 15 Jul 1980 ; AM P25034, 1 males (7.8–8.9 mm), SE of Broken Bay, 33º26–43’S, 151º50’– 152°06’E, 329 m, trawl, K76­15­01/02­03, 5 Oct 1976 ; AM P25033, 1 male (12.3 mm), E of Terrigal, 33º26–28’S, 152º04–06’E, 329 m, K76­15­03, 5 Oct 1976 ; AM P61138, 1 ovigerous female (10.0 mm), E of Broken Bay, 33º29’S, 152º03’E, 439 m, K76­16­05/06, 27 Sep 1977 ; AM P31497, 1 ovigerous female (11.1 mm), E of Broken Bay, 33º31’S, 152º02’E, 403 m, K79­15­03, 3 Oct 1979 ; AM P28807, 3 males (5.6–9.7 mm), 1 female (10.0 mm), E of Broken Bay, 33º28’S, 152º04’E, 366 m, K79­08­05, 18 Jul 1979 ; AM P28810, 3 males (6.7–8.9 mm), 3 females (6.8–10.0 mm), E of Broken Bay, 33º28’S, 152º04’E, 366 m, K79­08­05, 18 Jul 1979 ; AM P19081, 1 female (9.1 mm), off Sydney, 34º00’S, 151º43’E, trawl, Nov 1972 ; AM P65624, 1 ovigerous female (8.4 mm), NE of Wollongong, 34°13’S, 151°27’E, 512 m, K79­16­01, 9 Oct 1979 ; AM P31421, 1 male (9.5 mm), E of Brush Island, 35º32’S, 150º46’E, 458 m, K77­21­03, 22 Nov 1977 . VICTORIA: AM P42269, 1 male (12.1 mm), 1 ovigerous female (8.9 mm), S of Gabo Island, Victoria, 38°02’S, 150°02’E, 384 m, K80­ 07­11, 14 Jun 1980 .

Remarks. The present specimens are the first to be reported from Australia. The ova of ovigerous females measure 1.2 mm in diameter.

Distribution. Philippines, Indonesia, New Caledonia and now from southeastern Australia at 265–512 m depth.