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Keywords from Image Description:
Holospira pasonis shell. Drawing of apertural view of shell of Holospira pasonis Pilsbry Manual of Conchology Second series Pulmonata archive org Volume Urocoptidae archive org page Plate figure Dall Proc Nat Mus xix plate figures public domain PDUS PDold Images from Manual of Conchology Holospira pasonis Apertural views