Occurrence of Prionospio saccifera (Spionidae: Polychaeta) in the Mediterranean Sea

A population of Prionospio saccifera, a new record for the Mediterranean Sea, was investigated in the Manavgat River Delta (Antalya Bay), situated off the Turkish Mediterranean coast, in July 1995. Specimens were collected at five stations with sandy-mud bottoms, from 65 to 85 m depths. The morphological, ecological and zoogeographical characteristics of the species are given and discussed. Some notes on other representatives of Prionospio such as P. fallax, P. ehlersi and P. dubia which co-occurred with P. saccifera are also considered.