Euvola laurentii (Gmelin, 1791)
GMELIN,
J. F. 1791. Caroli a Linné, Systema Naturae per Regna Tria Naturae, secundum
classes, ordines, genera, species, cum characteribus differentis, synonymis,
locis. Tomus I. Pars VI.
Classis VI. Vermes Species, cum characteribus, differentiis, synonymis, locis. 13th edition, Aucta, Reformata, 3021-3910
p. Impensis Georg Emanuel Beer, Lipsiae [Leipzig], 1791.
[p. 3317]
1791 Ostrea laurentii Gmelin, 1791
J. H. Chemnitz,1784, Neues Systematisches Conchylien-Cabinet, Band 7, plate 61.
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«Laurentii. 7. O. valva superiore subconvexa laevi: lineis perpendicularibus tenerrimis strias subtilissimas transversas concentricas secantibus, inferioris radiis viginti quatuor, intus striis quadraginta octo.
Chemn. Conch. 7. t. 61. f. 595. Habitat rarissima ad Americae australis littora, testa 2 pollices 8 lineas longa, et perinde, lata, valva superiore spadicea radiis albis maculisque albidis varia, inferiore alba flavicante obumbrata: radiis paulo obscurioribus.» JOHANN FRIEDRICH GMELIN, 1791
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Shell nearly orbicular, equilateral, rather thin, decidedly inequivalve, smooth and shining; left valve nearly flat in an anterior and posterior direction, but inflated in a direction from the beaks to the base, having a decided radial shoulder above on each side under the ears. It has very faint, low, wide, radiating ridges, and in addition minute radial threads, which are crossed by feeble concentric growth lines, ridged within with numerous radiating bars; right valve evenly convex, externally sculptured like left valve, with fine, radial ribs within arranged in pairs; ears nearly equal.. The left valve is dark purplish red, with faint, radiating, lighter-colored rays; toward its upper part it is beautifully mottled with yellowish or pinkish white, and occasionally marked with oblique, light-colored strigations. There are also a fewdark reddish-brown spots on the upper part of the shell. The right valve is whitish or buff, feebly rayed with brownish.
Height, 90; length, 90 mm, A number of adult living specimens of this very fine and rare species were dredged in 7 fathoms in the harbor of Mayaguez. DALL, W. H. & C. T. SIMPSON. 1901. The Mollusca of Porto Rico. Bulletin of the United States, Fish and Fisheries Commission, 20: 351-524, pls. 53-58. [p. 464]
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Euvola laurenti (Gmelin, 1791); B. K. Raines & G. T. Poppe, 2006, A Conchological Iconography, The Family Pectinidae, plate 114, figures 3, 4a, 4b.
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