TABLE OP FAMILIES AND GENERA. XVU 



Page 



FamUy GALEOMMIDJE 42 



Scintilla 42 



Family LUCINID^ 42 



Lucina 42 



Cryptodon . . . . : 83 



Sportella 46 



Divaricella 46 



Family UNGULINID^ 47 



Diplodonta 47 



FamUy CHAMID^ 49 



Chama 49 



Family VERTICORDIID^ 51 



Verticordia 51 



Family CARDIIDiE 51 



Cardium • ... 51 



Frotocardium 52 



Hemicardium 55 



Family CYllEMID^ 55 



Cyrena 55 



Sphajrium 59 



Family ARCTICID^ (Cyprinid^) .... 60, 295 



Arctica {Cyprinn) 60, 295 



Trapezium 61 



Anisocardia 62 



Isocardia 62 



Family VENERID^ 63 



Moretrix 63 



Tapes 68 



b 



