Abstract: The species of the genera Wocklumeria and Parawocklumeria are investigated in terms
 of their conch geometry, intraspecific variability, and ontogenetic trajectories using a rich material.
 Both genera are closely related, as indicated by a number of characters regarding conch geometry,
 ornament, and suture line.  Some of the peculiar conch characters, including adult modifications,
 such as opening of the umbilicus, a terminal constriction, lateral narrowing of the mature aperture,
 and extreme septal crowding that is paralleled by the loss of suture characters can be seen in
 Wocklumeria.  Wocklumeria sphaeroides (R1CHTER, 1848) and Wocklumeria denckmanni (WEDEKIND,
 1918) are distinguished on the base of degree of triangular coiling in intermediate whorls.
 Wocklumeria oblivia n. sp. and Wocklumeria boulmanensis n. sp. are newly described from the
 Anti-Atlas of Morocco.