Alexia myosotis marylandica Pilsbry, 1900 accepted as
Myosotella myosotis (Draparnaud, 1801) (subsequent type designation)
Aylacostoma palaea (Pilsbry, 1950) † (basis of record)
Goniobasis acutifilosa var. siskiyouensis Pilsbry, 1899 accepted as
Juga occata (Hinds, 1844) (subsequent type designation)
Goniobasis catabaea Haldeman, 1865 accepted as
Elimia symmetrica (Haldeman, 1842) (subsequent type designation)
Goniobasis circumlineata Tryon, 1865 accepted as
Juga nigrina (I. Lea, 1856) (subsequent type designation)
Goniobasis plicifera var. bulimoides Tryon, 1865 accepted as
Juga plicifera (I. Lea, 1838) (subsequent type designation)
Goniobasis plicifera var. oregonensis Tryon, 1865 accepted as
Juga plicifera (I. Lea, 1838) (subsequent type designation)
Melania pluristriata Say, 1831 accepted as
Pachychilus pluristriatus (Say, 1831) (additional source)
Palaina scalariformis (Pease, 1865) (new combination reference)
Planorbis amosbrowni Pilsbry, 1930 † (additional source)
Status
Classification uncertain, belongs in Planorbina or Gyraulus according to Baker (1964). [details]