| 摘要: |
| 于1959年12月14日在南海进行的全国海洋综合调查时，采到了一个罕见的双壳类标本。最近经过鉴定，认为是一个新种，属于双带蛤科、糙双带蛤属，定名为中华糙双带蛤。模式标本保存于中国科学院海洋研究所。 |
| 关键词: 软体动物门 双壳纲 双带蛤科 新种 |
| DOI：10.11693/hyhz200004006006 |
| 分类号: |
| 基金项目:国家重大基金项目“中国动物志”资助 |
附件 |
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| A NEW SPECIES OF MESODESMATIDAE FROM SOUTH CHINA SEA |
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XU Feng-shan, LI Xiao-hong
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Institute of Oceanology, The Chinese Academy of Sciences, Qingdao266071
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| Abstract: |
| Recently, we found a new species belonging to Genus Mouterosatus, Family Mesodesmatidae, Bivalvia; it was collected from the South China Sea, on 14 December, 1959.
The new species has a shell that is rather small, thin, fragile, compressed, equivalve and inequilateral; umbo low, situated at the posterior 2/5 of dorsal margin; without lunule and escutcheon; anterior margin round and posterior margin slightly truncated. The nearly straightly anterior dorsal margin is longer than the posterior dorsal, with a surface ornamented with rather coarsely concentric lines, and the dorsal is usually covered by yellowish periostracum, especially on the margin area.
The hinge has external and amphidetic ligament, and resilium is situated at a very small resilifer behind the cardinal teeth in each valve; the right valve has two cardinal teeth, whilst the left valve has one; the shell interior surface is white, mantle line that is not sinus, the adductor scars indistinct.
The specimen measurements: length 10.2mm, height 7.0mm, breath 3.8mm.
Holotype (M30951) collected from Beibu Wan (Gulf of Tonkin), South China Sea (20°45′N, 109°15′E), 21m deep, 14 Dec., 1959.
This new species resembles M. prima (Locard, 1899), but the latter has a rounded posterior margin. |
| Key words: Mullusca, Bivalvia, Mesodesmatidae, New species |
