Synoptic Keys to the Genera of Ophiuroidea
Family Ophioleucidae Matsumoto, 1915
Family Ophioleucidae Matsumoto, 1915
1 (4) |
Single tentacle scale throughout arm. |
2 (3) |
Dorsal arm-plates rudimentary. . . . Ophiotrochus Lyman, 1878. *panniculus Lyman, 1878. New Guinea. 1,000 fms. |
3 (2) |
Dorsal arm-plates well developed and broadly contiguous: disc granulated: ventral arm-plates large and entire. . . . Ophiopallas Koehler, 1904. *paradoxa Koehler, 1904. Indonesia. 200 fms. |
4 (1) |
More than 1 tentacle scale, at least in basal part of arm. |
5 (8) |
Two tentacle scales throughout arm. |
6 (7) |
Disc granulated. . . . Ophiopyren Lyman, 1878. *longispinus Lyman, 1878. Caribbean. 100–600 fms. |
7 (6) |
Central part of disc covered by skin, with scales and radial shields forming the periphery. . . . Ophiernus Lyman, 1878. *vallincola Lym., 1878. Crozet Is. 1,400 fms. page 20 |
8 (5) |
Basal tentacle-pores with several scales. |
8a (11) |
Basal (first to third) tentacle-pores with several marginal scales, but succeeding pores with only 1 scale to each. Disc granulated. |
9 (10) |
Peripheral granules of disc modified into papillae which continue round the borders of the radial shields, and some other plates. . . . Ophioleuce Koehler, 1904. *seminudum Koehler, 1904. Indonesia. 800 fms. |
10 (9) |
Granules of disc not specialized and not arranged in rows around the borders of disc plates. . . . Ophiocirce Koehler, 1904. *inutilis Koehler, 1904. Indonesia. 60 fms. |
11 (8a) |
Tentacle-pores with 6 scales, dwindling to 3 or 4 scales at the distal extremity of the arm. . . . Ophioperla Koehler, 1912. *Ophiura koehleri Bell, 1908 = Ophioperla ludwigi Koehler, 1912. Antarctica, 40–250 fms. See Mortensen (1936, p. 311) for discussion of type and nomenclature. |