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Free Content The Chiton Species Described by C. B. Adams, 1845, from Jamaica

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The taxonomic status of several of the seven species of chitons from Jamaica described by C. B. Adams in 1845 had not been established with certainty. In an investigation of these species, the type material was re-examined and re-photographed, and comparisons were made between relevant Caribbean and Pacific specimens. The results reveal that all seven of Adams species of chitons had been previously described. Six of Adams' names fall into synonymy: Chiton costatus C. B. Adams [= Chiton viridis Spengler, 1797]; C. erythronotus C. B. Adams, C. papillosus C. B. Adams, and C. squamulosus C. B. Adams [= Ischnochiton striolatus (Gray, 1828)]; C. multicostatus C. B. Adams [= Ischnochiton pectinatus (Sowerby, 1840)]; C. purpurascens C. B. Adams [= Stenoplax limaciformis (Sowerby, 1832)]. Relegated to synonymy for over a century, Chiton squalidus C. B. Adams emerges now as the only valid Adams' chiton name, denoting the Caribbean species, Ceratozona squalida (C. B. Adams, 1845) [= Ceratozona rugosa (Sowerby, 1840), not Chiton rugosus Gray, 1826].

The results also indicate that Ischnochiton floridanus Pilsbry, 1892, is a junior synonym of Stenoplax limaciformis (Sowerby, 1832), a species common to both tropical eastern Pacific and Caribbean waters.

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Document Type: Research Article

Publication date: 1978-01-01

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