199 



718. Lithophagus, Megerle, 181 1. Lithodomus, Cuv. 1817 ; Risso, 

 1826. Perna, Oken, 1815. Mytilus y, Schum. 1817. Modiola, 

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

 Gevers, 1/78. Callitriche and Callitrichoderma, Poli, 1795. 

 M. Lithophagus. 



719. Brachydontes, Swains. 1840. Area, sp. Zenn. Mytilus, sp. 

 Schroet. Modiola, sp. Lam. Mytilus exustus. 



720. Crenella, Brown, 1827- Mytilus crenatus. 

 Pectunculina, U Orb .1844. P. ? 



Hemnannseri (i. 320) erroneously unites this genus with Limopsis. 



721. Lanistina. Modiola, sp. Lam. Lanistes, Swains. 1840; not 

 Montf. Modiolaria, "Beck" ; Loven, 1846. Mytilus discors. 



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

 " Beck." Modiola trapezina. 



Fam. III. PINNIM. 



723. Pinna, Linn. ; Lam. 1801. Chimsera, Poli, 1792. Mya, Scopoli, 

 1777 ; not Linn. Pinna rudis. 



Pinna, Swains. 1840. P. serrata. 

 Perna (apan), Adans. 1757. 



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



Fam. IV. DREISSENID.E. 



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

 or Mytulina, -Cantraine, 1835. Trichogonia, Rossmiisler, 1835. 

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

 Mey erle, 1 8 1 1 . Dythalmia, Jay. Mytilus polymorpha. 



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



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



728. Mytilimeria, Conrad, 1837. 



729. ? Myoconcha, UOrb. 



Fam. V. PTERIAM. 



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, 1777. Reniella, 

 Swains. 1840, young. Mya Vulsella. 



732. Pteria, Scopoli, 1777. Avicula, Klein, 1753; Brug. 1789; 

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



