Lima Silvio Felipe Barbosa, Christoffersen Martin Lindsey
Laboratório de Bentos Costeiro, Departamento de Biologia, Universidade Federal de Sergipe, São Cristóvão, Sergipe 49100-000, Brazil.
Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Campus I, Castelo Branco, João Pessoa, Paraíba 58051-900, Brazil.
Zookeys. 2016 Apr 27(585):17-31. doi: 10.3897/zookeys.585.7646. eCollection 2016.
After an extensive search for the type specimens of Caecum floridanum Stimpson, 1851, we believe that these specimens may have been either lost or destroyed in the Chicago fire (1871). This paper presents a redescription of the species and a neotype is designated based on material from the type locality (Florida). Protoconch and growth stages of Caecum floridanum are described and illustrated herein. The teleoconch IV of Caecum floridanum is characterized by strong, wide, low, rounded, closely arranged axial ribs, except last three to four preceding the aperture, which are larger and more widely separated. Caecum compactum Dall, 1892 is here synonymized under Caecum floridanum. Caecum annulatum Emmons, 1858 and Caecum dux Folin, 1871 are not considered synonyms of Caecum floridanum in this report.
在对1851年史汀生所命名的佛罗里达盲螺(Caecum floridanum)的模式标本进行广泛搜寻后,我们认为这些标本可能已在芝加哥大火(1871年)中丢失或损毁。本文对该物种进行了重新描述,并根据来自模式产地(佛罗里达)的材料指定了新模标本。本文描述并展示了佛罗里达盲螺的原壳及生长阶段。佛罗里达盲螺的第四螺层以粗壮、宽阔、低矮、圆润且排列紧密的轴肋为特征,但在壳口前的最后三到四条轴肋较大且间距更宽。1892年戴尔所命名的紧密盲螺(Caecum compactum)在此被同义化为佛罗里达盲螺。本报告不认为1858年埃蒙斯所命名的环纹盲螺(Caecum annulatum)和1871年福林所命名的杜氏盲螺(Caecum dux)是佛罗里达盲螺的同物异名。