CONTENTS. 



Introduction : Classification of agnathous snails vii 



Classification of the OLEACINID^E xii 



Genus PSEUDCSUBULINA Strebel 1 



SPIRAXIS C. B. Adams 11 



VARICELLA Pfeiffer xvi, 48, 211 



OLEACINA Bolten xvii, 127 



RECTOLEACINA Pilsbry 142 



STREPTCSTYLA Shuttlevvorth xxvi, 144, 211 



ORYZOSOMA Pilsbry 163 



STREBELIA Crosse et Fischer xxvii 



POIRETIA Fischer xx, 164 



SALASIELLA Strebel xxv, 170 



EUGLANDINA Crosse et Fischer xxvi, 175 



Family FERUSSACIDJE 211 



Genus FERUSSACIA Risso 215 



CRYPTAZECA de Folin 282 



CALAXIS Bourguignat 284 



DIGONIAXIS Jousseaume 288 



AZECA 'Leach' Turton 289 



COCHLICOPA Fer., Risso 308 



HOHENWARTIANA Bourguignat 327 



COILOSTELE Benson 338 



Appendix to the Achatinida. 



Genus OBELISCUS, subgenus Dolicholestes Pilsbry.... 346 



OPEAS Albers 349 



Reference to plates 351 



(v) 



