Abstract Ophioconis claviculata sp. nov. is described on the basis of three specimens collected from Ryukyu Islands, southwestern, Japan. The new species is distinct in having: disc covered by granules; four, sometimes five flat, polygonal oral papillae on each side of jaw; broad and flat teeth with hyaline distal end; spiniform and conical arm spines, two times longer than the corresponding arm segment at the maximum length; oralmost arm spines on proximal portion of arms flattened and clavate; four tentacle scales on third tentacle pore; and ventral arm plate longer than wide, with concentrate lamellar striations. The new species was found under rocks of open water as well as in a dark and medium to low salinity (28 ppt) environment of submarine cave, suggesting that this species tolerate this specific condition.

中文翻译：

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日本西南部琉球群岛麦冬属（棘皮动物：Ophiuroidea）一新种

摘要 Ophioconis claviculata sp。十一月 是根据从日本西南部琉球群岛采集的三个标本进行描述的。新物种的独特之处在于： 被颗粒覆盖的圆盘；下颌两侧有四个，有时五个扁平的多边形口腔乳头；具有透明远端的宽而扁平的牙齿；棘状和锥形臂棘，在最大长度处比相应的臂段长两倍；手臂近端部分最口的臂刺变平并呈棒状；第三触手孔上有四根触手鳞片；腹臂板长大于宽，有密集的层状条纹。在开阔水域的岩石下以及海底洞穴的黑暗和中低盐度 (28 ppt) 环境中发现了新物种，这表明该物种能够忍受这种特定条件。