Pecten laetus Gould, 1861
GOULD, A. A. 1861. Descriptions of shells ofthe North Pacific Exploring Expedition. Proceedings of the Boston Society of Natural History, 8: 14-40. [p. 39]
«PECTEN LAETUS. T. rotundato-ovata, convexiuscula, vivide rufa; auricula parva fere rectangulari; a. altera duplo longiori, acutangulari, extremitate arcuata; sinu byssali magno; valvae integrae costis 10-12 majoribus laminas remotas erectas fornicatas gerentibus, 3-4 minoribus plus minusve muriculatis interpositis; v. alterae costis frequentioribus minoribus squamigeris, costulis muriculatis interpositis; auriculis (nisi area ad sinum tendente) radiis numerosis spinulosis munitis; cavositas valvae; integrae rubricata; v. alterae pallidior, fere alba. Long. 3.5; alt. 3.75; lat. 1.5 poll. Inhabits Hakodadi Bay, in shelly mud, 10 fath. W. S.
Resembles generally P. senatorius, but is more elongated, the small ear longer, and the ribs much less regularly disposed. It is still more like P. caurinus G. in which the ribs are angular and more regularly disposed. In old and heavy specimens the scales are worn off; and in some young specimens, too, they are inconspicuous.» AUGUSTUS ADDISON GOULD, 1861
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Pecten laetus Gould; C.E. Lischke, 1868, Japanische Meeres-Conchylien, plate 12, figures 6, 7.
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