Acanthinula expatriata Preston, 1911 (original description)
Ancylus crassistriatus Preston, 1911 accepted as Burnupia crassistriata (Preston, 1911) (original description)
Cerastus nobilis Preston, 1911 accepted as Cerastus roosevelti (Dall, 1910) (original description)
Clausilia degeneris Preston, 1911 accepted as Macroptychia degeneris (Preston, 1911) (original description)
Curvella deliciosa Preston, 1911 (original description)
Ennea consobrina Preston, 1911 accepted as Ennea syngenes Preston, 1913 accepted as Gulella syngenes (Preston, 1913) accepted as Gulella commoda syngenes (Preston, 1913) (original description)
Ennea iota Preston, 1911 accepted as Nesopupa bisulcata (Jickeli, 1873) accepted as Afripupa bisulcata (Jickeli, 1873) accepted as Vertigo bisulcata (Jickeli, 1873) (original description)
Ennea keniana Preston, 1911 accepted as Gulella insolita (E. A. Smith, 1903) (original description)
Ennea optata Preston, 1911 accepted as Gulella ugandensis (E. A. Smith, 1901) (original description)
Ennea pilula Preston, 1911 accepted as Primigulella pilula (Preston, 1911) (original description)
Ennea pretiosa Preston, 1911 accepted as Costigulella pretiosa (Preston, 1911) accepted as Aenigmigulella pretiosa (Preston, 1911) (original description)
Ennea princei Preston, 1911 accepted as Gulella princei (Preston, 1911) (original description)
Ennea simplicima Preston, 1911 accepted as Gulella simplicima (Preston, 1911) (original description)
Fauxulus duplicatus Preston, 1911 accepted as Pupilla duplicata (Preston, 1911) (original description)
Homorus egregius Preston, 1911 accepted as Subulona egregia (Preston, 1911) (original description)
Jaminia desiderata Preston, 1911 accepted as Lauria desiderata (Preston, 1911) (original description)
Kenia Preston, 1911 accepted as Nothapalus E. von Martens, 1897 (original description)
Kenia iredalei Preston, 1911 accepted as Nothapalus iredalei (Preston, 1911) (original description)
Kenia suturalis Preston, 1911 accepted as Nothapalus suturalis (Preston, 1911) (original description)
Krapfiella Preston, 1911 (original description)
Krapfiella mirabilis Preston, 1911 (original description)
Limicolaria (Rebmanniella) Preston, 1911 accepted as Limicolariopsis d'Ailly, 1910 (original description)
Limicolaria (Rebmanniella) inepta Preston, 1911 accepted as Limicolariopsis inepta (Preston, 1911) (original description)
Opeas angustior Preston, 1911 accepted as Streptostele angustior (Preston, 1911) (original description)
Opeas orestias Preston, 1911 accepted as Pseudopeas orestias (Preston, 1911) (original description)
Opeas rumrutiense Preston, 1911 accepted as Pseudopeas rumrutiense (Preston, 1911) (original description)
Opeas terebra Preston, 1911 accepted as Streptostele terebra (Preston, 1911) (original description)
Opeas vicina Preston, 1911 accepted as Streptostele vicina (Preston, 1911) (original description)
Pisidium kenianum Preston, 1911 accepted as Euglesa keniana (Preston, 1911) (original description)
Rachis turricula Preston, 1911 accepted as Gittenedouardia turricula (Preston, 1911) (original description)
Rachis virginea Preston, 1911 accepted as Rhachistia chiradzuluensis var. virginea (Preston, 1911) (original description)
Thapsia rumrutiensis Preston, 1911 accepted as Afroguppya rumrutiensis (Preston, 1911) (original description)
Trachycystis approximans Preston, 1911 accepted as Trachycystis abyssinica (Jickeli, 1874) (original description)
Trachycystis planulata Preston, 1911 accepted as Halolimnohelix planulata (Preston, 1911) (original description)
Trachycystis pseudocharopa Preston, 1911 accepted as Trachycystis abyssinica (Jickeli, 1874) (original description)
Trachycystis rugosa Preston, 1911 accepted as Trachycystis lamellifera (E. A. Smith, 1903) (original description)
Zingis consanguinea Preston, 1911 accepted as Halolimnohelix consanguinea (Preston, 1911) (original description)
Zingis gaziensis Preston, 1911 accepted as Elgonella gaziensis (Preston, 1911) (original description)
Zingis keniana Preston, 1911 accepted as Montanobloyetia keniana (Preston, 1911) (original description)

Kenya for Acanthinula expatriata Preston, 1911 
Kenya for Ancylus crassistriatus Preston, 1911 
Kenya for Cerastus nobilis Preston, 1911 
Kenya for Curvella deliciosa Preston, 1911 
Kenya for Ennea consobrina Preston, 1911 
Kenya for Ennea iota Preston, 1911 
Kenya for Ennea keniana Preston, 1911 
Kenya for Ennea optata Preston, 1911 
Kenya for Ennea pilula Preston, 1911 
Kenya for Ennea pretiosa Preston, 1911 
Kenya for Ennea princei Preston, 1911 
Kenya for Ennea simplicima Preston, 1911 
Kenya for Fauxulus duplicatus Preston, 1911 
Kenya for Homorus egregius Preston, 1911 
Kenya for Jaminia desiderata Preston, 1911 
Kenya for Kenia iredalei Preston, 1911 
Kenya for Kenia suturalis Preston, 1911 
Kenya for Krapfiella mirabilis Preston, 1911 
Kenya for Limicolaria (Rebmanniella) inepta Preston, 1911 
Kenya for Opeas angustior Preston, 1911 
Kenya for Opeas orestias Preston, 1911 
Kenya for Opeas rumrutiense Preston, 1911 
Kenya for Opeas terebra Preston, 1911 
Kenya for Opeas vicina Preston, 1911 
Kenya for Rachis turricula Preston, 1911 
Kenya for Rachis virginea Preston, 1911 
Kenya for Thapsia rumrutiensis Preston, 1911 
Kenya for Trachycystis approximans Preston, 1911 
Kenya for Trachycystis planulata Preston, 1911 
Kenya for Trachycystis pseudocharopa Preston, 1911 
Kenya for Trachycystis rugosa Preston, 1911 
Kenya for Zingis consanguinea Preston, 1911 
Kenya for Zingis gaziensis Preston, 1911 

 Type locality

 for Fauxulus duplicatus Preston, 1911

'Between Rumruti and Mount Kenia, British East Africa' [details]