CONTENTS OF VOL. II. 5 



Family TEREBRID^, 182 



Family PLEUROTOMID.E, 183 



Family CONID.E, 186 



Family STROMBID.E, 189 



Family CYPR^ID^, 196 



Family CASSIDID.E, 199 



Family DOLIID^, 202 



Family M AC GILLIVR AYID^ (?), . . . .203 



Family NATICID^E, 204 



Family CALYPTR^IDJE, . . . . .211 



Family ONUSTID^, 215 



Family SOLARIID^, 217 



Family SCALARID^, 220 



Family lAXTHINID^, 222 



Family TRICHOTROPID^, 223 



Family TURRITELLIDJE, 224 



Family YERMETID^, 226 



Family CECIDJE, . 228 



Family EULIMIDJE, 229 



Family TURBONILLID^, 234 



Family PYRAMIDELLID.E, . . . . . 238 



Family LITTORINID.E, 240 



Family PLANAXID^, 246 



Family CERITHIID^, 24t 



Family MELANIID^, . 251 



Family STREPOMATID^, ..... 256 

 Family RISSOELLID^, . . . . . .258 



Family RISSOID^, 259 



SvBFAMiLY BY THININ^, 260 



Subfamily SKENEINjE, 261 



Subfamily i?ISS07iV^Ii\^J5J, 261 



Subfamily RISSOINM, 263 



. Subfamily HYDROBIINJE, . . . . .265 



