New research on bryozoans has determined that formerly widespread species are in many cases complexes of similar, but distinct, species with more restricted distributions. Notwithstanding, the limits of distribution are still unresolved for many taxa, and occasionally a wide distribution is confirmed. Beania magellanica has been considered a widespread species, distributed throughout the Southern Hemisphere, parts of northern Pacific and Atlantic Oceans and the Mediterranean Sea. This study examines the Magellanic-type material, together with other historic samples and new specimens collected in the western Mediterranean and Adriatic, and for the first time, presents specimens from the European North Atlantic. Morphological comparisons and biometric analysis show the existence of three different species among the specimens studied. A redescription of B. magellanica based on the type specimen is presented, and two new species are described: B. serrata sp. nov. from the Northeast Atlantic and B. mediterranea sp. nov. from the Mediterranean Sea. These results indicate that B. magellanica s.l. is a large complex of species and that most specimens from different parts of the world must be revised.

中文翻译：

---

拆除Beania magellanica（Busk，1852）物种群（Bryozoa，Cheilostomata）：来自欧洲水域的两个新物种。

对苔藓动物的新研究已经确定，以前分布广泛的物种在许多情况下是分布相似但分布受限的物种的复合体。尽管如此，许多类群的分配限制仍未解决，偶尔也可以确定广泛的分配。紫薇被认为是广泛分布的物种，分布于整个南半球，北太平洋和大西洋的部分地区以及地中海。这项研究检查了麦哲伦类型的材料，以及在地中海西部和亚得里亚海收集的其他历史样品和新标本，并且首次展示了来自欧洲北大西洋的标本。形态学比较和生物特征分析表明，所研究的标本中存在三种不同的物种。提出了根据类型标本对黑麦芽孢杆菌的重新描述，并描述了两个新种：锯缘芽孢杆菌。十一月 来自东北大西洋和B. mediterranea sp。十一月 来自地中海。这些结果表明B. magellanica sl是物种的大型复合体，必须修改来自世界不同地区的大多数标本。