1922] 



NATURAL SCIENCES OF PHILADELPHIA 



85 



4. ANNOTATED LIST OF SPECIES. 



HELICIDAE 

 Genus MICRARIONTA Ancy 1880 



This group, long subordinated as a section or subgenus of 



Distribution of genus Micrarionta in California and western Arizona, with 

 special reference to the desert species, subgenus Eremarionta (indicated by 

 capital letters). 



Epiphragmophora, has recently been elevated on anatomical 



