Euvola turtoni (E. A. Smith, 1890)
SMITH, E. A. 1890. Report on the marine molluscan fauna of the island of St. Helena. Proceedings of the Scientific Meetings of the Zoological Society of London, 1890 (2): 247-317, pls. 21-24. [p. 306, pl. 22, figs. 10, 10a]
1890 Pecten (Janira) turtoni Smith, 1890
E. A. Smith, 1890, plate 22.
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«Testa rotundata; valva plana leviter concava, refescens vet rosacea, maculis albis, lineisque gracilibus, zigzagformibus, purpureis, ornata, costis radiantibus, tenuibus, auranlio-rufis, circiter 17-19, instructa, lineis incrementi confertis, elevatis, pulcherrime lamellata; valva canvexa, mediocriter profunda vel purpurea, apicem versus pallida vel albida, inter costas pupureo tincta, costis paulo latioribus et planioribus quam in valva superiore; auriculae parvae, plus minus purpureo tinctae; pagina interna valvae profundae alba, fusco-purpureo marginata, v. planae in medio aurantio vel roseo, et ad marginem purpureo tincta.
Longit. et latit. 32-34 millim. The fine ribs, the comparatively small auricles, and the beautiful raised lamelliform lines of growth are the chief distinguishing features of this species. It probably attains larger dimensions than those given above. The angle formed by the divergent dorsal slopes is about 116 degrees.» EDGAR ALBERT SMITH, 1890
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«Remarks. The present shells are not marked or catalogued as type material. Because they have been obtained from the author of the species description, we assume that they are part of the type series.The taxonomic position of the present species is Euvola turtoni (Smith, 1890), placed in the family Pectinidae. Raines & Poppe (2006) treated this taxon as a junior synonym of Euvola ziczac (Gmelin, 1791), but personal observations of the senior author confirm that both taxa are valid species. The present species is only recorded from Saint Helena.»
DIJKSTRA, H. H. & F. KÖHLER. 2008. An annotated catalogue of Recent Pectinoidea (Mollusca, Pectinidae and Propeamussiidae) type material in the Museum of Natural History, Humboldt University, Berlin. Zoosystematics and Evolution, 84 (1): 31-44, figs. 1-4. [p. 42]
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Potential syntype of Pecten (Janira) turtoni; H. H. Dijkstra & F. Köhler, 2008, An annotated catalogue of Recent Pectinoidea type material in the Museum of Natural History, Humboldt University, Berlin, figure 4 f.
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«Finally, a delicate thin-shelled species, E. chazaliei (Dautzenberg, 1900), occurs at depths of 1-221 m in the tropical western Atlantic and Caribbean, and its closely related sister species, E. turtoni (E. A. Smith, 1890), lives at St. Helena Island, in the central South Atlantic. All of the extant species of Euvola have umbonate larval shells with a small prodissoconch-I/II ratio, suggesting a planktotrophic mode of larval development»
WALLER, T. R. 2007. The evolutionary and geographic origins on the endemic Pectinidae (Mollusca: Bivalvia) of the Galápagos Islands. Journal of Paleontology, 81 (5): 929–950, figs. 1-9. [p. 938]
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