Prostheceraeus moseleyi Lang, 1884

(Fig. 2 j)

Habitat. 20 specimens were collected from mussel beds in Bizerta lagoon.

Locality. Bizerta lagoon (37° 13' 19.29" N; 9° 55' 49.94" E).

Localities in Tunisia from bibliography. Bizerta lagoon (Gammoudi et al. 2011; Gammoudi & Tekaya 2012).

Other localities in the world. Gulf of Naples (Lang 1884); Catalonian coasts (Novell 2001). This species with a previous distribution restricted to Mediterranean coasts was recently reported for the first time from the Atlantic ocean by Noreña et al. (2014).

Remark. In our study, P. moseleyi was found to feed on the ascidian Styela plicata (Lesueur, 1823) . Noreña et al. (2014) noticed that atlantic specimens feed mainly on Clavelina lepadiformis (Müller, 1776) .