BIVALVIA. 35 



9. Pecten opercularis, Linnceus. Tab. VI, fig. 2, a — d. 



List. Hist. Conch., lib. hi, fig. 27. 

 Ostrea opercularis. Linn. Syst. Nat., p. 1147, No. 202, 1767. 



— — Born. Mus. Cses. Vindobon, p. 106, 1780. 



— — Schrot. Einleit in die Conchyl., hi, p. 317, t. ix, fig. 3, 1784. 

 _ _ W. Wood. Ind. Test., pi. 10, fig. 43. 



— subrufa. Don. Brit. Shells, vol. i, pi. 12, 1799. 



— lineata. Don. Brit. Shells, vol. iv, pi. 116, 1803. 



— sanguinea. Poli. Test. Sicil., vol. ii, pi. 28, figs. 7-8. 



— — ? Knorr. Deliees des Yeux., t. iv, fig. 1, 1766. 



— plebeja. Broc. Conch. Foss. Subap., p. 577, t. 14, fig. 10, 1814. 

 Pecten pictus. Da Costa. Brit. Conch., p. 144, pi. 9, figs. 1, 2, 4, 5, 1778. 



— lineatus. Id. - p. 147, pi. 10, fig. 8. 



— — Mont. Test. Brit., pp. 147, 579, 1803. 



— — Chenu. Conch. Illust. Pecten., pi. 30, figs. 1, 2. 



— opercularis. Chem. Conch. Cab., vii, p. 341, pi. 67, fig. 646, 1782. 



— — Mont. Test. Brit., p. 145, 1803. 



— — Lam. Hist, des An. Sans. Vert., vi, p. 172, 1822. 



Brown. Illust. Conch. Gr. Brit., pi. 33, fig. 1, 1827. 



— — Payr. Cat. des Moll, de la Corse., p. 77, 1826. 



— — Chenu. Conch. Illust. Pecten., pi. 48, fig. 3. 



— Gold/. Pet. Germ., t. ii, p. 62, tav. 95, fig. 6, 1833. 



— — Phil. En. Moll. Sic, p. 82, t. 6, fig. 2, 1836. 



— G. B. Sow., Jr. Thes. Conch., p. 53, pi. 17, figs. 141 — 146, 1847. 



— — Loven. En. Moll. Scand., p. 30, 1846. 



— — Forb. and Hani. Hist. Brit. Moll., vol. ii. p. 299, pi. L, fig. 3 > 



L i, figs. 5, 6 ; L hi, fig. 7, 1849. 



— sulcatus. J. Sowerby. Min. Conch., t. 393, fig. 1, 1823. 

 _ _ Woodward. Geol. of Norf., p. 44, 1833. 



— — Nyst. Rech. Coq. Foss. Prov. d'Anv., p. 19, 1835. 



— reconditus. J. Sowerby, Min. Conch., t. 575, figs. 5, 6, 1827. 



— Nyst. Rech. Coq. Foss. Prov. d'Anv., p. 19, No. 73, 1835. 



— — Potiez et Mich. Cat. Moll, de Douai, p. 77, pi. 49, figs. 1, 2. 



— subrufus. Turt. Brit. Biv., p. 210, t. 17, fig. 1, 1822. 



— Audouinii. Payr. Cat. Moll, de Cors., p. 77, pi. 2, figs. 8, 9, 1826. 



— plebeius. J. Sowerby. Syst. Ind., p. 244, 1835. 



— — Bronn. Leth. Geog., ii, p. 916, t. 39, fig. 16, 1838. 



— Sowerbyi. Nyst. Conch. Foss. de Belg., p. 293, pi. 22, fig. 3, b', and pi. 22 bis. 



— Malvin^e. Dubois de Montp. Conch. Foss. Wolhyn. Podol., p. 71, pi. 8, figs. 2, 3. 



— flavus ? Id. p. 72, pi. 8, fig. 7. 



RECTANGULUS? Id. - - - p. 72, pi. 8, figs. 10, 1 1. 



— pulchellinus ? Id. - - p. 70, pi. 8, fig. 8. 



— radians? Nyst. Coq. Foss. de Belg., p. 294, pi. 24, fig. 3, 1844. 



— 20-sulcatus. Mull, (fide Loven.) 



Description de l'Egypt Hist. Nat., pi. 13, figs. 5, 1—4, and pi. 14, fig. 8, 1826. 



Ency. Meth., pi. 212, fig. 2. 



Dale. Hist, and Antiq. of Harwich, p. 291, t. xi, fig. 1, 1730. 



Spec. Char. Testa sudor biculari, subaquivalvi, longitudinaliter radiatd radiis 18 — 26, 



