CONTENTS OF VOL. III. 
Famity ISOCARDIIDA, 
Famity CARDIIDA, . 
Famity VERTICORDIIDA, 
Famity CHAMIDA, . 
Famity HIPPURITIDA, . 
Famity MEGALODONTIDA 
Famity TRIDACNID#, 
Famity LUCINIDA, . 
SusramMiny LUCININA, 
SuBFAMILY CORBINA, . 
Famity UNGULINID#A, 
Famity ERYCINID A, 
Famiry SOLEMYID A, 
Famity CRASSATELLID &, 
Famity ASTARTIDA, 
SupraMity ASTARTINZA, 
SupraMiILty CARDITINA, 
Orper ASIPHONIDA, 
SUBORDER HOMOMYARIA, . 
Famity CARDINIID &, 
Famity UNIONIDA, 
Famity IRIDINIDA, 
Famiry MYCETOPODIDA, 
Famity A THERIIDA, 
Famity TRIGONIID#, 
Famity NUCULIDA, 
Famity ARCIDA, 
SuBORDER HETEROMYARIA, 
