Fróðskaparrit - 01.01.1999, Blaðsíða 231
ECHINODERMATA, ASTEROIDEA í FØROYSKUM ØKI
235
Genus Bathybiaster Danielssen and Ko-
ren, 1882
Bathybiaster vexillifer (W. Thomson,
1873) (Fig. 2)
Fig. 2. Bathybiaster vexillifer (W. Thomson), diameter
up to 280 mm (Murray and Hjort 1912).
Mynd 2. Bathybiaster vexillifer (W. Thomson),
diameter upp i 280 mm (Ur Murray og Hjort 1912).
Synonyms: Archaster vexillifer W. Thomson 1873;
Bathybiasterpallidus Danielssen and Koren 1882;
llyaster mirabilis Danielssen and Koren 1884;
Bathybiaster robustus'Verrill 1894
Reference to best descriptions of the species:
Mortensen (1927: 61-63, Fig. 35); Clark and
Downey (1992: 47-48, Pl. A-C)
BioFar stations: 169 (3), 170 (1, not seen), 188 (1),
228 (3), 478 (1), 479 (1), 563 (11), 564 (10), 753
(1), 9007 (1, not seen)
Other records: Faroe-Shetland Channel (Bell 1892);
south of the Iceland-Faroe Ridge (Murray and
Hjort 1912); Porcupine Seabight (50°22’N,
11°44’W); Rockall Trough (57°41’N, 11°48’W)
(Gage et al., 1985)
Bathymetrical range within the area: 700 - 2,199 m
Substrate: mud
Temperature: -0.9 - -0.7 °C (measured); estimated:
-0,9 - +0,6°C
Water mass: NW
World distribution: Circumpolar-boreal: distributed all
over the cold area of the Norwegian Sea, at Sval-
bard, in the cold part of the Faroe-Shetland Chan-
nel, along the E. Greenland coast and north to the
Umanak Fjord on the W. Greenland coast
(Mortensen 1927) and south to the Bay of Biscay
(ca. 44°N); in W. Atlantic south to Cape Hatteras
(35°N) (Clark and Downey, 1992).
World bathymetrical range: 225 - 3,110 m
Remarks: Grieg (1919) describes one cold water and
one warm-water species, which have been rejected
by Mortensen (1927) and Ringvold (1996).
Genus Leptychaster E. A. Smith, 1876
Leptychaster arcticus (M. Sars, 1850)
(Map 2)
Synonyms: Astropecten arcticus M. Sars 1850; Lep-
toptychaster arcticus Sladen 1889
Reference to best descriptions of the species:
Mortensen (1927: 66-67, Fig. 38); Clark and
Downey (1992: 56-58, Pl. 14a-f)
BioFar stations: 6 (1), 10 (1), 27 (5), 32 (1), 43 (1), 44
(1) , 45 (2), 51 (1), 100 (1), 117 (1), 118 (4), 119
(3), 120 (2), 124 (11), 146 (1), 154 (1), 158 (5),
189 (1), 205 (1), 233 (9), 234 (1), 263 (14), 267
(2) , 268 (4), 281 (8), 283 (1), 285 (3), 286 (1), 290
(2) , 299 (3), 329 (1), 332 (2), 333 (2), 334 (6), 335
(3) , 341 (2), 343 (6), 344 (1), 345 (1), 352 (1), 354
(1) , 359 (1), 363 (1), 364 (1), 381 (7), 382 (3), 411
(2) , 415 (3), 419 (6), 420 (15), 421 (28), 422 (2),
423 (6), 451 (3), 453 (3), 454 (2), 457 (7), 467
(10), 469 (3), 481 (1), 482 (2), 483 (6), 495 (1),
499 (5), 524 (1), 587 (1), 598 (1), 604 (2), 621 (3),
646 (1), 691 (2), 696 (3), 716 (1), 717 (3), 738 (7),
739 (4), 742 (2), 743 (1), 744 (3), 747 (15), 756
(4) , 760 (10), 762 (9), 763 (8), 764 (1), 765 (3),
766 (3), 776 (2), 778 (3), 9018 (1)
Other records: Faroe-Shetland Channel (Bell 1892).
Bathymetrical range within the area: 160 - 1,319 m
(mainly: 160 - 750 m)
Substrate: clay, sand, shell-sand, gravel, stones
Temperature: 0.3° - 7.9°C (measured); estimated: 0°-
8.6°C
Water mass: AW, AW/AI, AI, AI/NW
World distribution: Subarctic (Franz et al., 1981); to
circumboreal (D’yakonov 1950): in the West At-
lantic, Labrador and east of Newfoundland south to
Delaware; in the East Atlantic from the southem