Hartmann-Schröder, 1959 and Syllis bella
(Chamberlin, 1919) are new reports for the Mediterranean Sea. One more species, Inermosyllis balearica
(San Martín, 1982) is a new report for the Eastern area. Another species Syllis
has been found but its identification is not completely certain. Similarities and differences with Syllis mayeri
Musco & Giangrande, 2005 are exposed. A discussion about possible migration explanations to the presence in the Mediterranean of these species is included.
A collection of 24 samples from Lebanon (Eastern Mediterranean Sea) was studied yielding a number of 27 identified species. Two of them: