The fibula is reduced to a mere rod-like rudiment of the upper end.
G, Germ-cells surrounded by rudiment-cells of ovarian tubes.
As in other Gastropoda Anisopleura, this shell-sac may abnormally develop a plug of chitinous matter, but normally it flattens out and disappears, whilst the cap-like rudiment of the permanent shell is shed out from the dome-like surface of the visceral hump, in the centre of which the shell-sac existed for a brief period.
PrGabp l, Rudiment of the appendage of the praegenital somite which disappears.
3, a), but there are only three hind-toes, with a rudiment of the fifth metatarsal.