The platycephalid genus Leviprora Whitley 1931 is taxonomically revised. Although the genus has been regarded as monotypic, including only Leviprora inops (Jenyns 1840) known from southern Australia, this study shows that Platycephalus semermis De Vis 1883, which was originally described from South Australia and has been considered to be possibly a junior synonym of L. inops, is the second nominal species of the genus. The two species are distinguished from each other by the number of pectoral-fin rays (18–19 in L. inops vs. 20–21 in L. semermis), the preocular spine (absent vs. present), fleshy sensory tubes on the cheek region (absent vs. developed), number of ducts of pored scales in the lateral line (one vs. two) and ratio of orbital diameter/interorbital width (2.3–4.7 vs. 1.5–2.8, both tending to decrease with growth). The present study presents a key to the species of the genus, detailed redescriptions and a comparison of the two species, and designates a neotype for L. semermis. This study also provides a revised diagnosis of the genus, owing to the new member of the genus and intraspecific variation in diagnostic characters.

中文翻译：

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扁头属 Leviprora Whitley 1931 的分类学修订，承认 Leviprora semermis (De Vis 1883) 作为有效物种（Platycephalidae 科）

鸭嘴兽属 Leviprora Whitley 1931 进行了分类学修订。虽然该属被认为是单型的，仅包括澳大利亚南部已知的 Leviprora inops (Jenyns 1840)，但这项研究表明 Platycephalus semermis De Vis 1883，最初在南澳大利亚描述，并被认为可能是L. inops，是该属的第二个名义种。这两个物种的区别在于胸鳍鳍条的数量（L. inops 为 18-19 对 L. semermis 为 20-21）、眼前棘（不存在与存在）、胸鳍上的肉质感觉管脸颊区域（不存在与发达）、侧线上有孔鳞片的导管数量（1 对 2）和眶径/眶间宽度比（2.3-4.7 对 1.5-2.8，两者都随着生长而减少） . 本研究提供了该属物种的关键、详细的重新描述和两个物种的比较，并为 L. semermis 指定了一个新型。由于该属的新成员和诊断特征的种内变异，该研究还提供了对该属的修订诊断。