· Paralagenophrys Clamp, 1987

(Fig. 5) has a lorica aperture that is similar to that of Lagenophrys, but its body and lorica aperture are twisted obliquely clockwise. The result is a lorica aperture that is displaced nearly 90o to the right and aligned almost parallel to the long axis of the body. The single species of Paralagenophrys is the only lagenophryid that is not restricted to a crustacean host. It also occurs on aquatic vascular plants and animals other than crustaceans (e.g., pulmonate snails) (Clamp 1987b).