BIVALVIA. 35 



9. PECTEN OPERCULARIS, Linnaeus. Tab. VI, fig. 2, a d. 



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

 OSTREA OPERCULARIS. Linn. Syst. Nat., p. 1147, No. 202, 1767. 



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



Schrot. Einleit in die Concbyl., iii, 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. Delices 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 MoU. 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. MoU. Scand., p. 30, 1846. 

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



L i, figs. 5, 6 ; L iii, 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. /. 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 PEgypt Hist. Nat., pi. 13, figs. 5, 14, 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 suborbiculari, subcequwalm, longitudinaliter radiatd radiis \ 8 26, 



