Fróðskaparrit - 01.01.1999, Blaðsíða 242

246
ECHINODERMATA, ASTEROIDEA IN THE FAROE AREA
12* 11* 10' 9*____________it
13* 12* 11* 10'
8' 7' 6'
Map 7. Records of Diplopteraster multipes (M. Sars) (A), and Hymenaster pellucidus W. Thomson /• j in the
Faroe region.
Kort 7. Skrásetingar av Diplopteraster multipes (M. Sars) (A) og Hymenaster pellucidus W. Thomson (•) í
føroyskum øki.
World bathymetrical range: 91 - 1,225 m.
Remarks: The recorded specimen was large, R= 130
mm. Clark and Downey (1992) gives size range R=
12-92 mm.
Genus Hymenaster Thomson, 1873
Hymenaster pellucidus W. Thomson,
1873 (Map 7)
Synonym: Hymenaster giganteus Sladen 1891
Reference to best descriptions of the species:
Mortensen (1927: 107-108, Fig. 62); Clark and
Downey (1992: 319-320, Fig. 50a, b, Pl. 77 c, d)
BioFar stations: 15 (1), 27 (1), 41 (1), 82 (2), 137 (1),
172 (1), 230 (6), 274 (1), 293 (1), 458 (4), 481 (1),
482 (1), 533 (1), 719 (1) 749 (3), 750 (8), 751 (1),
770 (7), 778 (1), 9012 (24), 9018 (26)
Other records: Found in the cold part of the Faroe-
Shetland Channel (Bell 1892); Iceland-Faroe Ridge
(Murray and Hjort 1912).
Bathymetrical range within the area: 225 - 1,114 m
(mainly: 450 - 750 m)
Substrate: mud, clay, sand, shell-sand, gravel, rock
Temperature: -0.8° - +2.0°C (measured); estimated: -
0.8° - +7.5°C
Water mass: AW, AW/AI, AI, AI/NW, NW
World distribution: Circumboreal: in the West At-
lantic south to the northem part of South America;
in the East Atlantic from East Greenland, Svalbard
and the Siberian Sea south to Portugal. It is also
found in the Eastem Pacific south to Panama.
World bathymetrical range: 128 - 3,239 m.
Remarks: There is disagreement in synonymising H.
membranaceus Thomson, 1877 and H. giganteus
Sladen, 1891 with H. pellucidus Thomson.