FIGURE 33 in Serpulidae (Annelida: Polychaeta) from the Suez Canal- From a Lessepsian Migration Perspective (a Monograph) 2848

FIGURE 33. Variability in opercula of Spirobranchus tetraceros specimens from the Great Bitter Lake "Yellow Fleet". A—Fringed wings of opercular peduncle visible on specimen to the right, B—¾ lateral view of tube with partly emerged operculum, C—Lateral view of conical form of operculum, without antler-like spines (subsample Bry1), D—Lateral view of conical operculum with antler-like spines; fringes (even a double one) seen on wings (D–E, subsample Ships Hulls Poly 24), E—Frontal view of operculum with spines; fringes seen on wings. Scales: 1 mm.