Shell usually elevated, but variable. Apex with fine radial striations, often eroded in older specimens. Peristome narrow to broadly ovate. Ferrissia Walker 63a and 63b 62b. Apex smooth, with no trace of radial striations, although radial striations may be present on other areas of shell.
Peristome ovate to subcircular.
Aperture never with a septum 64a and 64b 63a . Shell thin, fragile, very much depressed, less than 0.25 times as high as long. Color often glossy reddish brown. Length of shell up to 5 mm. Shell moderately elevated, over 0.25 times as high as long.