Common genera — • Lacteolima Thysanophora 



Hojeda Microphysula 



Family BULIMULIDAE 



Moderate to large; shells higher than wide, usually streaked 

 with color; lip thin 



Common genera — Liguus Drymaeus 



Bidimulus Orthalicus 



Family OLEACINIDAE 



Shells with high spire, thin lip, narrow aperture 

 Common genera — Euglandina Varicella 



Family UROCOPTIDAE 



Small, many whorled, slender, tapering shells; lip reflected; 



toothless 



Common genera — Holospira 



Cochlodmella Microceramus 



Family ACHATINIDAE 



Small, slender shells; lip thin; base of columella slightly turned 

 back over umbilical area 



Common genera — Rumina Cecilwides 



Lamellaxis Suhulma 



Family CERIONIDAE 



Pupa-like; large (about 1") and solid; often streaked with color; 

 aperture completely reflected 

 Common genus — Cerion 

 Family TESTACELLIDAE 



Animal slug'like, with posterior mantle and rudimentary, ear' 

 shaped shell 



Common genus — Testacella 

 Family HAPLOTREMATIDAE 



Shells heliciform, moderate sized, thin, semi-shining, with wide 

 umbilicus; foot not grooved 

 Common genus — Haplotrema 

 Family ZONITIDAE 



Shells usually depressed; shining or semi-transparent; aperture 

 large and thin-lipped; foot often grooved 

 Common genera — Zonitoides Pristiloma 



Mesomphix Ventridens 



Vitrina Gastrodonta 



Vitrinizonites Hawana 



Pilshryna RetineUa 



Clappiella Euconulus 



Paravitrea Oxychilus 



Striatura Cuppya 



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