xii CLASSIFICATION 
Suborder STYLOMMATOPHORA 
Superfamily DITREMATA 
ORTHURETHRA 
Family PUPIDAE ... 05505 2000.sen 
Family VALLONIIDAE.......... 
HETERURETHRA 
Superfamily ELASMOGNATHA 
Family SUCCINEIDAE.......... 
SIGMURETHRA 
Superfamily AULACOPODA 
Family ZONITIDAE............. 
Family LIMACIDAE............. 
Family PHILOMYCIDAE........ 
Family ENDODONTIDAE.............. 
Superfamily AGNATHOMORPHA 
Family GLANDINIDAE................. 
Family CIRCINARIIDAE........ 
Superfamily HOLOPODA 
Family STENOGYRIDAE............... 
Family HELICIDAE............. 
Superorder STREPTONEURA 
Order CTENOBRANCHIATA 
Suborder ORTHODONTA 
Superfamily TO XOGLOSSA 
Family TEREBRIDAE........... 
Kamily TURRITIDAR © fe ons. ace 
Family CANCELLARIIDAE............. 
Superfamily RACHIGLOSSA 
Family OLIVIDAE........0....:... 
Family MARGINELLIDAE.............. 
Family VOLUTIDARE.. wisia:2 ass sa see 
Family MITRIDAE.............. 
Family BUCCINIDAE. 3... 7: sch sconce oe 
Family. NASSIDAB.. ....5t.t.0. 20 nee ce 
Family COLUMBELLIDAE.............. 
Family MURICIDAE. «25. -:catas eee 
PAGE 
