Abstract：
In Algeria, few studies have been carried on the Holothuriodea especially the family Cucumariidae Ludwig, 1894. A specimen was caught as bycatch from a commercial benthic trawler on the Mostaganem coast (northwest of Algeria). Based on a detailed study of the morphological, anatomical and endoskeletal characters, this specimen is confirmed to be Ocnus planci (Brandt, 1835). We report it herein as the first observation from the Algerian west coast. This species has been recorded several times in the Mediterranean sea. It is characterised by a calcareous ring, whose radial plates are longer than the interradial plates, the presence of buttons and perforated button plates of different sizes in the body wall, as well as various shapes of rosettes, baskets and nodules with small perforations.
摘要：
在阿尔及利亚,对Holothuriodea尤其是CucumariidaeLudwig家族的研究很少，1894年。在Mostaganem海岸（阿尔及利亚西北部）的商业底栖拖网渔船上捕获了一个标本。基于对形态学的详细研究，解剖和内骨骼特征，这个标本被证实是Ocnusplanci(Brandt，1835).我们在此将其报告为阿尔及利亚西海岸的首次观察结果。该物种已在地中海中多次记录。它的特点是钙质环，其径向板比径向板长，身体壁中存在不同尺寸的纽扣和穿孔纽扣板，以及各种形状的玫瑰花结，有小穿孔的篮子和结节。
