Three new species of the genus Hydrocyphon Redtb. from the Mediterranean area are described, H. vicinans and H. segrex from south-east Turkey (the former also found in Israel), and H. hamiota from southern Spain. The two first-mentioned species belong to the australis-group, which is characterized by the aedoeagus being symmetrically built throughout. H. vicinans is very closely related to the Cyprian species oblongulus Nyh., while H. segrex takes a more isolated position within the group. H. hamiota belongs to those species In which the ventral-piece of aedoeagus is strongly asymmetric with only one medial appendage (prosthema) developed (the pallidicollisgroup), and its nearest relative is H. laeticolor Nyh., which has also merely been found in the south of Spain so far.