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Ophiopsila aranea
''Ophiopsila aranea'' is a species of brittle star belonging to the family Ophiocomidae. It is the type species of the genus ''Ophiopsila''
==Original Description==
“I have thought it necessary to constitute a genus for the reception of a naked-bodied, long-armed ''Ophiura'', which is not uncommon in the seas of the Archipelago. It combines some of the characters of ''Ophiomyxa'' with some of those of the following genus, and has a habit peculiar to itself. But one species occurs. It has a round disc, sometimes lobed between the rays, flat, coriaceous and smooth. There are two linear nearly parallel separate shields opposite the origin of each ray. The upper ray-scales are square and minutely granulated ; the lower ones are quadrangular, with lunate sides. Each lateral ray-plate bears six spathulate spines, the lowest but one of which is longer than the rest, and the lowest smaller. In dead specimens the last laps over the ray-plate, so that its apex meets that of its fellow on the opposite side. The spines can lap close to the rays, except the undermost ones. The longest spines do not quite equal in length the breadth of the ray. The rays are 6½ times as long as the breadth of the disc. The ovarian plates are small and sub-pentagonal. When alive, the colours are brilliant shades of brown, morone (), or orange: when dead, the creature is of a purplish brown. It inhabits various depths above 40 fathoms.” 〔Forbes, 1843. On the radiata of the eastern Mediterranean. Trans. Linn. Soc. London, 19: 143-153.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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