FIGURE 14 in Serpulidae (Annelida: Polychaeta) from the Suez Canal- From a Lessepsian Migration Perspective (a Monograph) 2848

FIGURE 14. First record of Hydroides steinitzi in the Suez Canal from a taphonomic residue of the operculum. Operculum, collected in 1950, was within tube inside Chama asperella valve (Beets' Stn 15, 10.4 m, see App. Table 2B). A— Tube in situ, B—Tube removed from valve; note upper surface somewhat encrusted with granular layer, C—Dried opercular residue (verticil) found within the tube had "lasted" 50 years (compare with those in Fig. 13). Scales: B—1 mm, C—100 µm.