ABSTRACT The tortoise-crab Cryptocnemus vincentianus (Decapoda, Brachyura, Leucosiidae) was first described in 1927 based on one specimen, and with only one specimen recorded since, nothing is known about its biology. We document 11 recently discovered individuals of this species from the Gulf St. Vincent in South Australia. The original description was based on a single female, whilst our records comprise five females and six males. The morphology of male individuals of this species is described for the first time. Male specimens were smaller than female C. vincentianus. The habitat consisted of medium to coarse sediment in depth to 20 m. The crab was rare based on both occurrence (constancy index <10%) and abundance (<0.001% of all macrofauna recorded). Comments on the conservation status of the species are provided.

中文翻译：

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重新发现龟蟹，Cryptocnemus vincentianus Hale，1927（Brachyura：Leucosiidae）

摘要 陆龟 Cryptocnemus vincentianus (Decapoda, Brachyura, Leucosiidae) 于 1927 年首次根据一个标本进行描述，此后仅记录了一个标本，对其生物学一无所知。我们记录了最近在南澳大利亚圣文森特湾发现的该物种的 11 个个体。最初的描述是基于单身女性，而我们的记录包括五名女性和六名男性。首次描述了该物种雄性个体的形态。雄性标本比雌性 C. vincentianus 小。栖息地由深度达 20 m 的中粗沉积物组成。根据发生率（恒定指数 <10%）和丰度（记录的所有大型动物群的 <0.001%），这种螃蟹是罕见的。提供了对该物种保护状况的评论。