Haploniscus bicuspis Sars 1877

Haploniscus bicuspis (Sars, 1877)

Nannoniscus bicuspis Sars, 1877: 352.—Sars 1885: 122, pl. 10: figs 31–45.

Haploniscus bicuspis —Richardson 1908: 75.— Hansen 1916: 29 –30, pl. 2, figs 2a–l.—Gurjanova 1932: 28.— Wolff 1962: 58, 208–210, 226 figs 25, 138–139, 144.— Lincoln 1985b: 659 –662, figs 1–2.—Kussakin 1988: 365–370, figs 31 2–315.— Svavarsson 1988: 85 –86.— Brökeland and Wägele 2004: 2 –4, figs 1–12.— Brökeland and Wägele 2004: 237, fig. 1 (Electronic supplement, 2–4, figs 1–12). — Kavanagh 2009: 29.

Haploniscus spinifer Hansen, 1916: 31 (part.).

Material examined. BIOICE stn. 2003, RV Håkon Mosby, RP sled, 19 July 1991, 65°2098N, 13°3657W, 64 m, 5.17°C, 3 specimens (IMNH 36866); BIOICE stn. 2010, RV Håkon Mosby, RP sled, 20 July 1991, 65°3022N, 11°2345W, 619 m, -0.36°C, 18 specimens (IMNH 36867); BIOICE stn. 2011, RV Håkon Mosby, RP sled, 20 July 1991, 65°3501N, 11°1677W, 768 m, -0.42°C, 1803 specimens (IMNH 36868); BIOICE stn. 2012, RV Håkon Mosby, Sneli sled, 20 July 1991, 65°3508N, 11°1662W, 769 m, -0.42°C, 13 specimens (IMNH 36869); BIOICE stn. 2014, RV Håkon Mosby, RP sled, 20 July 1991, 65°4143N, 10°5998W, 978 m, -0.41°C, 4382 specimens (IMNH 36870); BIOICE stn. 2015, RV Håkon Mosby, RP sled, 21 July 1991, 65°5907N, 10°4391W, 1195 m, - 0.79°C, 50 specimens (IMNH 36871); BIOICE stn. 2018, RV Håkon Mosby, RP sled, 21 July 1991, 66°3397N, 11°1349W, 1390 m, -0.82°C, 26 specimens (IMNH 36872); BIOICE stn. 2019, RV Håkon Mosby, RP sled, 21 July 1991, 66°3317N, 12°1156W, 1253 m, -0.86°C, 718 specimens (IMNH 36873); BIOICE stn. 2020, RV Håkon Mosby, Sneli sled, 22 July 1991, 66°3740N, 12°0875W, 1314 m, -0.86°C, 1 specimen (IMNH 36874); BIOICE stn. 2021, RV Håkon Mosby, Sneli sled, 22 July 1991, 66°3829N, 12°3531W, 1018 m, 5 specimens (IMNH 36875); BIOICE stn. 2023, RV Håkon Mosby, Sneli sled, 22 July 1991, 66°3323N, 13°1526W, 294 m, 1.41°C, 64 specimens (IMNH 36876); BIOICE stn. 2024, RV Håkon Mosby, RP sled, 22 July 1991, 66°3222N, 13°1700W, 317 m, 1.41°C, 1 specimen (IMNH 36877); BIOICE stn. 2025, RV Håkon Mosby, RP sled, 22 July 1991, 67°0077N, 13°3208W, 781 m, -0.54°C, 52 specimens (IMNH 36878); BIOICE stn. 2027, RV Håkon Mosby, RP sled, 23 July 1991, 67°1182N, 13°2058W, 1648 m, -0.76°C, 116 specimens (IMNH 36879); BIOICE stn. 2030, RV Håkon Mosby, RP sled, 23 July 1991, 67°0029N, 13°2585W, 831 m, -0.55°C, 766 specimens (IMNH 36880); BIOICE stn. 2033, RV Håkon Mosby, RP sled, 23 July 1991, 66°5481N, 13°3065W, 552 m, -0.54°C, 35 specimens (IMNH 36881); BIOICE stn. 2076, RV Håkon Mosby, Shipek grab, 30 July 1992, 67°1260N, 17°3381W, 622 m, - 0.42°C, 2 specimens (IMNH 36882); BIOICE stn. 2082, RV Håkon Mosby, Sneli sled, 4 July 1992, 67°2203N, 17°2433W, 894 m, -0.55°C, 3 specimens (IMNH 36883); BIOICE stn. 2088, RV Håkon Mosby, RP sled, 4 July 1992, 67°1432N, 17°5141W, 617 m, -0.44°C, 7 specimens (IMNH 36884); BIOICE stn. 2090, RV Håkon Mosby, RP sled, 5 July 1992, 67°1334N, 17°4894W, 539 m, -0.44°C, 36 specimens (IMNH 36885); BIOICE stn. 2093, RV Håkon Mosby, Sneli sled, 5 July 1992, 67°1185N, 17°4530W, 407 m, -0.31°C, 8 specimens (IMNH 36886); BIOICE stn. 2096, RV Håkon Mosby, RP sled, 5 July 1992, 67°0110N, 17°3466W, 300 m, 1.67°C, 1 specimen (IMNH 36887); BIOICE stn. 2100, RV Håkon Mosby, RP sled, 6 July 1992, 68°0006N, 19°2526W, 1141 m, - 0.58°C, 32 specimens (IMNH 36888); BIOICE stn. 2102, RV Håkon Mosby, Sneli sled, 6 July 1992, 67°5986N, 19°2629W, 1146 m, -0.58°C, 1 specimen (IMNH 36889); BIOICE stn. 2103, RV Håkon Mosby, Sneli sled, 6 July 1992, 67°5004N, 19°3287W, 905 m, -0.55°C, 4 specimens (IMNH 36890); BIOICE stn. 2110, RV Håkon Mosby, Sneli sled, 6 July 1992, 67°4571N, 19°2951W, 762 m, -0.53°C, 1 specimen (IMNH 36891); BIOICE stn. 2132, RV Håkon Mosby, RP sled, 8 July 1992, 66°4465N, 18°5530W, 492 m, 0.12°C, 5 specimens (IMNH 36892); BIOICE stn. 2134, RV Håkon Mosby, Sneli sled, 8 July 1992, 66°4446N, 18°5493W, 504 m, 0.12°C, 2 specimens (IMNH 36893); BIOICE stn. 2317, RV Magnus Heinason, RP sled, 2 May 1993, 64°0700N, 9°0300W, 996 m, 4 specimens (IMNH 36894); BIOICE stn. 2334, RV Magnus Heinason, RP sled, 4 May 1993, 62°4300N, 12°4300W, 803 m, 2 specimens (IMNH 36895); BIOICE stn. 2337, RV Magnus Heinason, RP sled, 5 May 1993, 62°2700N, 12°5500W, 1099 m, 19 specimens (IMNH 36896); BIOICE stn. 2364, RV Magnus Heinason, RP sled, 8 May 1993, 64°3500N, 10°0300W, 605 m, 63 specimens (IMNH 36897); BIOICE stn. 2366, RV Magnus Heinason, Sneli sled, 8 May 1993, 64°3900N, 9°4700W, 675 m, 1 specimen (IMNH 36898); BIOICE stn. 2369, RV Magnus Heinason, Sneli sled, 8 May 1993, 64°4000N, 9°3400W, 920 m, 1 specimen (IMNH 36899); BIOICE stn. 2403, RV Bjarni Saemundsson, RP sled, 1 July 1993, 63°0290N, 21°4960W, 838 m, 5.49°C, 1 specimen (IMNH 36900); BIOICE stn. 2406, RV Bjarni Saemundsson, RP sled, 1 July 1993, 62°5920N, 21°4700W, 934 m, 4.57°C, 79 specimens (IMNH 36901); BIOICE stn. 2427, RV Bjarni Saemundsson, RP sled, 3 July 1993, 63°0990N, 20°0369W, 778 m, 5.50°C, 1 specimen (IMNH 36902); BIOICE stn. 2475, RV Bjarni Saemundsson, RP sled, 5 July 1993, 63°0420N, 21°3490W, 842 m, 5.54°C, 42 specimens (IMNH 36903); BIOICE stn. 2575, RV Håkon Mosby, RP sled, 15 July 1993, 67°0964N, 24°1931W, 800 m, -0.53°C, 96 specimens (IMNH 36904); BIOICE stn. 2578, RV Håkon Mosby, Sneli sled, 15 July 1993, 67°0822N, 24°3666W, 1002 m, -0.58°C, 4 specimens (IMNH 36905); BIOICE stn. 2579, RV Håkon Mosby, RP sled, 15 July 1993, 67°0575N, 24° 4327, 996 m, -0.58°C, 214 specimens (IMNH 36906); BIOICE stn. 2581, RV Håkon Mosby, RP sled, 16 July 1993, 67°4320N, 22°3446N, 719 m, -0.50°C, 4 specimens (IMNH 36907); BIOICE stn. 2585, RV Håkon Mosby, RP sled, 16 July 1993, 67°2477N, 22°2386W, 450 m, - 0.46°C, 1 specimen (IMNH 36908); BIOICE stn. 2591, RV Håkon Mosby, RP sled, 16 July 1993, 67°1253N, 22°2546W, 333 m, 0.12°C, 19 specimens (IMNH 36909); BIOICE stn. 2627, RV Håkon Mosby, RP sled, 12 July 1994, 67°2543N, 16°0973W, 748 m, -0.56°C, 26 specimens (IMNH 36910); BIOICE stn. 2634, RV Håkon Mosby, Sneli sled, 12 July 1994, 67°2976N, 15°4785W, 795 m, -0.57°C, 1 specimen (IMNH 36911); BIOICE stn. 2638, RV Håkon Mosby, RP sled, 13 July 1994, 67°4868N, 15°3018W, 1009 m, -0.59°C, 67 specimens (IMNH 36912); BIOICE stn. 2640, RV Håkon Mosby, Sneli sled, 13 July 1994, 67°5571N, 15°2181W, 1097 m, -0.61°C, 2 specimens (IMNH 36913); BIOICE stn. 2642, RV Håkon Mosby, RP sled, 13 July 1994, 67°5591N, 15°2129W, 1098 m, -0.61°C, 117 specimens (IMNH 36914); BIOICE stn. 2644, RV Håkon Mosby, RP sled, 13 July 1994, 68°0115N, 15°1467W, 1202 m, -0.64°C, 4 specimens (IMNH 36915); BIOICE stn. 2647, RV Håkon Mosby, Sneli sled, 13 July 1994, 68°0492N, 15°1933W, 1304 m, -0.72°C, 2 specimens (IMNH 36916); BIOICE stn. 2648, RV Håkon Mosby, RP sled, 14 July 1994, 68°0509N, 15°1865W, 1306 m, -0.72°C, 76 specimens (IMNH 36917); BIOICE stn. 2652, RV Håkon Mosby, RP sled, 14 July 1994, 67°3597N, 15°0742W, 910 m, -0.57°C, 5 specimens (IMNH 36918); BIOICE stn. 2655, RV Håkon Mosby, RP sled, 14 July 1994, 67°1800N, 14°5729W, 549 m, - 0.55°C, 13 specimens (IMNH 36919); BIOICE stn. 2693, RV Bjarni Saemundsson, Agassiz trawl, 31 August 1994, 64°2700N, 28°1000W, 1100 m, 3.72°C, 1 specimen (IMNH 36920); BIOICE stn. 2700, RV Bjarni Saemundsson, Sneli sled, 2 September 1994, 64°0560N, 27°5000W, 1105 m, 3.84°C, 1 specimen (IMNH 36921); BIOICE stn. 2743, RV Håkon Mosby, Sneli sled, 30 July 1995, 67°4495N, 20°2841W, 729 m, 2 specimens (IMNH 36922); BIOICE stn. 2747, RV Håkon Mosby, Sneli sled, 31 July 1995, 67°4639N, 20°4715W, 778 m, -0.58°C, 3 specimens (IMNH 36923); BIOICE stn. 2754, RV Håkon Mosby, RP sled, 31 July 1995, 67°5504N, 19°1897W, 1023 m, -0.61°C, 11 specimens (IMNH 36924); BIOICE stn. 2755, RV Håkon Mosby, Sneli sled, 31 July 1995, 67°5513N, 19°1900W, 1024 m, -0.61°C, 2 specimens (IMNH 36925); BIOICE stn. 2756, RV Håkon Mosby, Triangle dredge, 1 August 1995, 67°5514N, 18°1880W, 610 m, -0.39°C,4 specimens (IMNH 36926); BIOICE stn. 2758, RV Håkon Mosby, Triangle dredge, 1 August 1995, 67°5478N, 18°0830W, 786 m, -0.39°C, 7 specimens (IMNH 36927); BIOICE stn. 2761, RV Håkon Mosby, Sneli sled, 1 August 1995, 67°5541N, 17°4314W, 1126 m, - 0.53°C, 1 specimen (IMNH 36928); BIOICE stn. 2762, RV Håkon Mosby, RP sled, 1 August 1995, 67°5548N, 17°4226W, 1130 m, -0.53°C, 305 specimens (IMNH 36929); BIOICE stn. 2765, RV Håkon Mosby, RP sled, 1 August 1995, 68°0630N, 17°3205W, 1220 m, -0.52°C, 37 specimens (IMNH 36930); BIOICE stn. 2769, RV Håkon Mosby, Triangle dredge, 2 August 1995, 68°3518N, 16°5623W, 519 m, -0.37°C, 1 specimen (IMNH 36931); BIOICE stn. 2773, RV Håkon Mosby, RP sled, 3 August 1995, 69°1489N, 14° 1652, 1629 m, -0.86°C, 3 specimens (IMNH 36932); BIOICE stn. 2776, RV Håkon Mosby, Sneli sled, 3 August 1995, 68°3610N, 14°3992W, 1553 m, -0.78°C, 1 specimen (IMNH 36933); BIOICE stn. 2777, RV Håkon Mosby, RP sled, 3 August 1995, 68°3680N, 14°4070W, 1556 m, -0.78°C, 19 specimens (IMNH 36934); BIOICE stn. 2779, RV Håkon Mosby, RP sled, 4 August 1995, 68°2042N, 15°4669W, 1413 m, -0.74°C, 16 specimens (IMNH 36935); BIOICE stn. 2783, RV Håkon Mosby, RP sled, 4 August 1995, 67°3566N, 17°5241W, 1017 m, -0.49°C, 201 specimens (IMNH 36936); BIOICE stn. 2786, RV Håkon Mosby, RP sled, 5 August 1995, 67°2456N, 18°1430W, 693 m, - 0.41°C, 81 specimens (IMNH 36937); BIOICE stn. 2787, RV Håkon Mosby, RP sled, 5 August 1995, 67°2136N, 18°2004W, 561 m, -0.29°C, 4 specimens (IMNH 36938); BIOICE stn. 2789, RV Håkon Mosby, Sneli sled, 5 August 1995, 67°1865N, 18°2312W, 540 m, -0.29°C, 3 specimens (IMNH 36939); BIOICE stn. 2844, RV Bjarni Saemundsson, RP sled, 27 August 1995, 63°0540N, 17°2110W, 1085 m, 4.48°C, 91 specimens (IMNH 36940); BIOICE stn. 2846, RV Bjarni Saemundsson, RP sled, 27 August 1995, 62°5900N, 17°5010W, 947 m, 3.48°C, 5 specimens (IMNH 36941); BIOICE stn. 2849, RV Bjarni Saemundsson, RP sled, 27 August 1995, 62°4982N, 18°0042W, 976 m, 3.26°C, 1 specimen (IMNH 36942); BIOICE stn. 2853, RV Bjarni Saemundsson, RP sled, 28 August 1995, 62°4030N, 16°5820W, 1833 m, 2.40°C, 2 specimens (IMNH 36943); BIOICE stn. 2901, RV Bjarni Saemundsson, RP sled, 24 August 1996, 65°2576N, 27°5360W, 854 m, 5.18°C, 14 specimens (IMNH 36944); BIOICE stn. 2903, RV Bjarni Saemundsson, Sneli sled, 24 August 1996, 65°2280N, 28°2063W, 1066 m, 4.78°C, 1 specimen (IMNH 36945); BIOICE stn. 2904, RV Bjarni Saemundsson, RP sled, 24 August 1996, 65°2327N, 28°2127W, 1057 m, 4.78°C, 6 specimens (IMNH 36946); BIOICE stn. 2909, RV Bjarni Saemundsson, RP sled, 25 August 1996, 65°1561N, 28°5015W, 1300 m, 3.96°C, 9 specimens (IMNH 36947); BIOICE stn. 2912, RV Bjarni Saemundsson, RP sled, 25 August 1996, 65°1101N, 29°0418W, 1456 m, 3.90°C, 38 specimens (IMNH 36948); BIOICE stn. 2918, RV Bjarni Saemundsson, Sneli sled, 26 August 1996, 65°1257N, 29°1455W, 1539 m, 3.22°C, 1 specimen (IMNH 36949); BIOICE stn. 3072, RV Bjarni Saemundsson, RP sled, 12 July 1997, 61°5365N, 15°0815W, 2082 m, 2.83°C, 28 specimens (IMNH 36950); BIOICE stn. 3115, RV Håkon Mosby, RP sled, 22 August 1999, 67°4218N, 19°4755W, 611 m, -0.57°C, 2 specimens (IMNH 36951); BIOICE stn. 3127, RV Håkon Mosby, RP sled, 23 August 1999, 68°4357N, 16°3467W, 1715 m, 33 specimens (IMNH 36952); BIOICE stn. 3136, RV Håkon Mosby, RP sled, 24 August 1999, 68°1527N, 20°0108W, 1112 m, 12 specimens (IMNH 36953); BIOICE stn. 3140, RV Håkon Mosby, RP sled, 25 August 1999, 67°5190N, 22°1489W, 768 m, -0.46°C, 11 specimens (IMNH 36954); BIOICE stn. 3143, RV Håkon Mosby, RP sled, 25 August 1999, 67°3076N, 24°1003W, 1012 m, 79 specimens (IMNH 36955); BIOICE stn. 3149, RV Håkon Mosby, Sneli sled, 26 August 1999, 66°5263N, 26°5603W, 434 m, 0.06°C, 2 specimens (IMNH 36956); BIOICE stn. 3163, RV Bjarni Saemundsson, Agassiz trawl, 26 July 2000, 61°4150N, 22°5810W, 1743 m, 2.79°C, 45 specimens (IMNH 36957); BIOICE stn. 3177, RV Bjarni Saemundsson, RP sled, 29 July 2000, 60°4491N, 23°4272W, 1951 m, 4 specimens (IMNH 36958); BIOICE stn. 3181, RV Bjarni Saemundsson, RP sled, 30 July 2000, 60°5286N, 26°4772W, 1543 m, 3.53°C, 9 specimens (IMNH 36959); BIOICE stn. 3189, RV Bjarni Saemundsson, Agassiz trawl, 1 August 2000, 62°0863N, 26°3817W, 950 m, 5.21°C, 4 specimens (IMNH 36960); BIOICE stn. 3195, RV Håkon Mosby, Agassiz trawl, 7 July 2001, 65°3950N, 9°0660W, 818 m, -0.58°C, 1 specimen (IMNH 36961); BIOICE stn. 3198, RV Håkon Mosby, RP sled, 8 July 2001, 65°3050N, 8°3130W, 935 m, -0.63°C, 55 specimens (IMNH 36962); BIOICE stn. 3199, RV Håkon Mosby, Agassiz trawl, 8 July 2001, 65°3008N, 8°3159W, 934 m, -0.63°C, 1 specimen (IMNH 36963); BIOICE stn. 3204, RV Håkon Mosby, RP sled, 8 July 2001, 64°5171N, 7°5456W, 2613 m, -0.83°C, 6 specimens (IMNH 36964); BIOICE stn. 3219, RV Håkon Mosby, RP sled, 11 July 2001, 67°1479N, 8° 2806, 1642 m, -0.82°C, 6 specimens (IMNH 36965); BIOICE stn. 3225, RV Håkon Mosby, RP sled, 12 July 2001, 68°3446N, 8°1555W, 1993 m, -0.86°C, 8 specimens (IMNH 36966); BIOICE stn. 3280, RV Bjarni Saemundsson, RP sled, 16 September 2001, 62°5350N, 15°5560W, 1692 m, 2.85°C, 7 specimens (IMNH 36967); BIOICE stn. 3501, RV Bjarni Saemundsson, RP sled, 31 August 2002, 62°5984N, 20°3025W, 829 m, 5.82°C, 3 specimens (IMNH 36968); BIOICE stn. 3515, RV Bjarni Saemundsson, RP sled, 4 September 2002, 62°2220N, 18°2335W, 1331 m, 3.77°C, 15 specimens (IMNH 36969); BIOICE stn. 3519, RV Bjarni Saemundsson, RP sled, 5 September 2002, 62°1576N, 17°3256W, 1960 m, 2.70°C, 1 specimen (IMNH 36970); BIOICE stn. 3532, RV Bjarni Saemundsson, RP sled, 9 September 2002, 62°4310N, 14° 3291, 1685 m, 2.51°C, 4 specimens (IMNH 36971); BIOICE stn. 3534, RV Bjarni Saemundsson, Sneli sled, 9 September 2002, 62°3819N, 14°1446W, 1556 m, 2.64°C, 1 specimen (IMNH 36972); BIOICE stn. 3538, RV Bjarni Saemundsson, RP sled, 10 September 2002, 62°2450N, 14°1355W, 1516 m, 2.57°C, 9 specimens (IMNH 36973); BIOICE stn. 3539, RV Bjarni Saemundsson, RP sled, 10 September 2002, 61°5963N, 13°3309W, 1377 m, 2.41°C, 10 specimens (IMNH 36974); BIOICE stn. 3543, RV Bjarni Saemundsson, RP sled, 11 September 2002, 61°3951N, 13°5465W, 1640 m, 2.86°C, 75 specimens (IMNH 36975); BIOICE stn. 3592, RV Bjarni Saemundsson, RP sled, 9 September 2003, 61°4776N, 27°0158W, 888 m, 6.09°C, 4 specimens (IMNH 36976); BIOICE stn. 3595, RV Bjarni Saemundsson, RP sled, 10 September 2003, 61°4958N, 26°0997W, 916 m, 5.52°C, 3 specimens (IMNH 36977); BIOICE stn. 3598, RV Bjarni Saemundsson, RP sled, 10 September 2003, 62°1737N, 25°3758W, 769 m, 6.50°C, 3 specimens (IMNH 36978); BIOICE stn. 3601, RV Bjarni Saemundsson, RP sled, 11 September 2003, 62°4214N, 25°2722W, 624 m, 7.11°C, 2 specimens (IMNH 36979); BIOICE stn. 3621, RV Håkon Mosby, RP sled, 14 July 2004, 66°2939N, 9°4480W, 1475 m, -0.78 °C, 3specimens (IMNH 36980); BIOICE stn. 3624, RV Håkon Mosby, RP sled, 14 July 2004, 66°5948N, 8° 4873, 1628 m, -0.82°C, 10 specimens (IMNH 36981); BIOICE stn. 3627, RV Håkon Mosby, Agassiz trawl, 15 July 2004, 67°1973N, 9°3330W, 1616 m, -0.81°C, 2 specimens (IMNH 36982); BIOICE stn. 3628, RV Håkon Mosby, RP sled, 15 July 2004, 67°1953N, 9°3276W, 1609 m, -0.81°C, 98 specimens (IMNH 36983); BIOICE stn. 3629, RV Håkon Mosby, RP sled, 16 July 2004, 67°5576N, 8° 1589, 1481 m, -0.84°C, 24 specimens (IMNH 36984); BIOICE stn. 3632, RV Håkon Mosby, RP sled, 16 July 2004, 68°0092N, 9°1478W, 1727 m, -0.82°C, 30 specimens (IMNH 36985); BIOICE stn. 3633, RV Håkon Mosby, RP sled, 17 July 2004, 68°2512N, 8°5772W, 1952 m, -0.84°C, 35 specimens (IMNH 36986); BIOICE stn. 3634, RV Håkon Mosby, Agassiz trawl, 17 July 2004, 68°2552N, 8°5774W, 1950 m, -0.84°C, 2 specimens (IMNH 36987); BIOICE stn. 3636, RV Håkon Mosby, RP sled, 17 July 2004, 68°4971N, 9°1442W, 1844 m, -0.81°C, 112 specimens (IMNH 36988); BIOICE stn. 3637, RV Håkon Mosby, RP sled, 17 July 2004, 68°2692N, 10°0875W, 2069 m, -0.80°C, 4 specimens (IMNH 36989); BIOICE stn. 3638, RV Håkon Mosby, Agassiz trawl, 18 July 2004, 68°2663N, 10°1058W, 2065 m, -0.80°C, 52 specimens (IMNH 36990); BIOICE stn. 3640, RV Håkon Mosby, RP sled, 18 July 2004, 67°5763N, 10°0261W, 1915 m, -0.82°C, 4 specimens (IMNH 36991); BIOICE stn. 3641, RV Håkon Mosby, RP sled, 19 July 2004, 66°5908N, 10°4314W, 1450 m, -0.77°C, 15 specimens (IMNH 36992); BIOICE stn. 3645, RV Håkon Mosby, RP sled, 21 July 2004, 67°2422N, 10°4059W, 1703 m, -0.81°C, 293 specimens (IMNH 36993); BIOICE stn. 3648, RV Håkon Mosby, RP sled, 22 July 2004, 68°5710N, 10°3280W, 2215 m, -0.79°C, 10 specimens (IMNH 36994); BIOICE stn. 3649, RV Håkon Mosby, Agassiz trawl, 22 July 2004, 68°5645N, 10°3565W, 2214 m,-0.79°C, 6 specimens (IMNH 36995); BIOICE stn. 3652, RV Håkon Mosby, RP sled, 22 July 2004, 69°0400N, 13°3385W, 1678 m, -0.81°C, 65 specimens (IMNH 36996); BIOICE stn. 3655, RV Håkon Mosby, RP sled, 23 July 2004, 68°4136N, 14°1874W, 1489 m, -0.80°C, 127 specimens (IMNH 36997); BIOICE stn. 3656, RV Håkon Mosby, RP sled, 23 July 2004, 68°4711N, 15°1867W, 1492 m, -0.72°C, 23 specimens (IMNH 36998); BIOICE stn. 3657, RV Håkon Mosby, Agassiz trawl, 23 July 2004, 68°4537N, 15°2280W, 1499 m, -0.72°C, 1 specimen (IMNH 36999); BIOICE stn. 3658, RV Håkon Mosby, RP sled, 24 July 2004, 67°5978N, 18°4838W, 1018 m, -0.60°C, 57 specimens (IMNH 37000); BIOICE stn. 3659, RV Håkon Mosby, RP sled, 24 July 2004, 67°4761N, 19°3638W, 806 m, -0.53°C, 104 specimens (IMNH 37001).

Remarks. This species is very common in the region, reported from 136 stations with most of them (100 stations) north of the Greenland-Iceland-Faeroe Ridge (Fig. 11 A). The distribution of the species on the GIF Ridge is, however, peculiar as the species is absent from shallow waters south of the Ridge, being found there at depths between 624 and 2082 m (Table 1). North of the Ridge the species occurs at depths between 64 and 2613 m, and with all but one record at 294 m and deeper. The distribution is though continuous as the bathymetrical distribution of the species on both sides of the Ridge reaches above the deepest saddle depth of the Ridge, i.e. 840 m (Hansen & Østerhus 2000). North of Iceland, H. bicuspis was generally found at low temperatures (in all cases but one at <1.68°C, one locality at 5.17°C) and mostly at temperatures below zero. South of the Ridge the temperatures ranged from 2.4 to 7.11°C.

Species No. of No. of Min. Max Area Min. Max. Water mass(es)

stations individuals depth depth temp. temp.

(m) (m) (°C) (°C)

Haploniscus astraphes 1 2 1300 S 3.96 LSW Haploniscus bicuspis has a very wide distribution, occurring both in the North and the South Atlantic (Brökeland & Wägele 2004). The record by Menzies (1962) of H. bicuspis from the South Atlantic probably refers to another species (Brökeland & Wägele 2004), since the illustration by Menzies (1962) shows a specimen differing from H. bicuspis in important characters, such as the shape of the rostrum.