EASTERN MEDITERRANEAN OPISTHOBRANCHIA: OXYNOIDAE, POLYBRANCHHDAE, STILIGERIDAE (SACOGLOSSA)

An account is given of the ceratiform sacoglossans collectedon diving expeditions to the Mediterranean shores of Yugoslaviaand Greece during the period 1978–86. Six species aredescribed, two of which, Cyerce graeca and Hermaea (Placida)saronica, are new to science; four of the six represent additionsor new records for the eastern Mediterranean (Received 20 July 1987;