Figure 4. A–E, Vermiliopsis cylindrica n in Descriptions of New Serpulid Polychaetes from the Kimberleys of Australia and Discussion of Australian and Indo-West Pacific Species of Spirobranchus and Superficially Similar Taxa

Figure 4. A–E, Vermiliopsis cylindrica n.sp. A,B, from a specimen in AM W21434: (A) tube of a juvenile specimen showing early formation of ridges; (B) juvenile operculum, contracted in alcohol, with concave distal end bearing a central peak; (C) another juvenile from AM W21406. D,E, a very tiny juvenile Vermiliopsis sp. from AM W21434: (D) tube with only a single median longitudinal and fine transverse ridges; (E) early juvenile worm in which an operculum is yet to be developed.