External: Rounded/cynindrical body; mantle covers entire dorsum; no caudal gland; smooth skin; one-part sole (Pilsbry 1948).
Internal: Ridged or striated jaw; no or very rudimentary internal shell; tentacle and buccal muscles have different origins; 2-loop alimentary system; penis but not epiphallus present; small spermatheca with wide, thick-walled duct; ligula in atrium (Pilsbry 1948).
Somewhat externally similar to Veronicellidae but not flat, pneumostome is clearly present on right anterior side, and sole is similar in width to body above.
25-100 mm long (Fairbanks 1998).
Non-native to: Hawaii (Pilsbry 1948), Caribbean.
Both deciduous and coniferous forest but favoring old, moist deciduous forest (particularly beechwood and basswood); some prefer rocky cliffsides or upland pine forest. Found in moist locations beneath loose bark, under dead logs, in tree crevices, and in leaf litter (Hubricht 1985).
Feed on fungus, lichen, and/or algae.