Figure 4 in Systematics and life habit in Serpula israelitica Amoureux, 1977 (Polychaeta Serpulidae) from the Mediterranean with remarks on other soft-bottom serpulids

Figure 4. Serpula israelitica. (A) Tube distal parts. Scale bar 2 mm. Sample Noto 10N. (B) Old-looking tube flaking off in irregular layers. Scale bar 1 mm. Sample Ciclopi 2G. (C) Tube of a young specimen with a shiny outer surface and slight growth lines. Scale bar 1 mm. Sample CR/10. (D) Micromorphology of outer surface of the tube of a young specimen showing rounded and symmetric in section growth lines. Scale bar 200 µm. Sample Ciclopi 2G. (E) Smooth outer surface from a tube distal part corresponding to the adult/old stage, growth lines disappearing with further calcification. Scale bar 200 µm. Sample Noto 10N.