Shells of Bythinella. A locality B1 B–C locality B7 D–F locality B5 G–Q locality B10; bar equals 1 mm.

 
 
  Part of: Osikowski A, Georgiev D, Hofman S, Falniowski A (2015) Does the genetic structure of spring snail Bythinella (Caenogastropoda, Truncatelloidea) in Bulgaria reflect geological history? ZooKeys 518: 67-86. https://doi.org/10.3897/zookeys.518.10035