199 



718. Lithophagus, Megerle, 1811. Lithodomus, Cuv. 1817 ; Risso, 

 1826. Perna, OA-e/i, 1815. Myūln&y, Schum.\S\7. Modiola, 

 sp. Lam. Pholas (rapau), Adans. 1757. Tamarindiformis a, 

 Gevers, 1778. Callitriclie and Callitrichoderma, Poli, 1795. 

 M. Lithophagus. 



719. Brachydontes, Smains. 1840. Arca, sp. Linn. Mytilus, sp. 

 Schroet. Modiola, sp. Lam. Mytilus exustus. 



720. Crenella, Brown, 1827. Mytilus crenatus. 

 Pectunculina, D' Orb. 1 844 . P. ? 



Herrmannsen (i. 320) erroneously unites this geuifs with Limopsis. 



72 1 . Lanistina. Modiola, sp. Lam. Lanistes, Sivains. 1840; not 

 Montf. Modiolaria, "i?ec/;"; Loven, 1846. MytUus discors. 



722. Modiolarca, Grarj, 1840. Modiola, sp. Lam. Modiolaria, 

 " Beck." Modiola trapeziua. 



Fam. III. PINNIDiE. 



723. Puma, imw. ; iam. 1801. Chimsera, Po/j, 1792. M.y&,Scopoli, 

 1777 ; not Linn. Pinna rudis. 



Pinna, Sivains. 1840. P. serrata. 

 Perna (apan), Adans. ^7^7. 



. 724. Atrina, Gray, 1840, 1844. P. nigra. 



Fam. IV. DREISSENID^. 



725. Dreissena, Van Beneden, 1835. Driessena, Bronn. Mytilina 

 or Mytulina, Cantraine, 1835. Trichogonia, Rossmasler, 1835. 

 Coelogonia, Bronn. Mytilus, sp. Schroet. Mytilus /3, Ranff ; 

 3Iefferle, 1811. Dythalmia, Jiay. Mytilus polymorpha. 



726. ? Enocephalus, Munst. 1833. Jinocephalus, Herrmann, 1846. 



727. Congeria, Partsch, 1835. Mytilomya, Cantraine, 1837. 



728. Mytilimeria, Conrad, 1837. 



729. ? Myoconcha, U Orb. 



Fam. V. PTERIADtE. 



730. Malleus, Lam. 1799, 1801. Ostrea e, Megerle, 1811. Ripariae, 

 sp. Gevers, 1787. Pintada, sp. Bolten, 1798. Margaritifera, 

 sp. Humph. 1797. Tudes polonica, Klein. O. Malleus. 



731. Baphia, Gevers, 1787. Vulsella, Humph. 1797; Lam. 1799, 

 1801; Schum. 1817; not Volsella, Scopoli, \777 . Reniella, 

 Sioains. 1 840, young. Mya Vulsella. 



732. Pteria, Scopoli, \777 ■ Avicula, Klein, 1753; Brug. 1789; 

 Lam. 1799, 1801. Margaritifera, sp. Humph. 1797. Anonica, 



