Figure 3. A–N, 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 3. A–N, Vermiliopsis cylindrica n.sp. (A) tube of holotype, AM W21406; B–G, a specimen from AM W21434: (B) whole worm, showing its short and broad chitinous operculum, its cap contracted into a concavity, with a central peak, and the extent of the thoracic membranes; (C) left ventrolateral view of thorax showing the ocellar cluster, termination of the thoracic membrane, the contracted proximal bulb-like part of the operculum, the peduncle, and numerous radioles; (D) enlarged drawing of operculum showing its transparent chitinous distal part, a single chamber with its terminal part contracted into a concavity, and peduncle contracted into several irregular folds; (E) the cushion-like swelling (pygidial gland) at the posterior end of abdomen; (F) thoracic uncini; (G) anterior abdominal uncini; (H,I) two views of the operculum of specimen from AM W21434 showing an un-contracted dome-shaped distal part, a single transparent chamber below it, its contracted proximal bulb-shaped part (partly into the transparent chamber), and contracted peduncle; (J) anterior end of a small juvenile specimen showing operculum and extent of thoracic membranes; (K) tube fragment found together with a specimen from AM W21434 (doubtfully included here); confirmation necessary as to whether such a circular unattached part can occur in this species. L,M, specimen from AM W21434: (L) anterior end of worm; (M) operculum; both show an un-contracted proximal bulb-shaped part, and a cylindrical distal part, the latter consisting of 3 partitions preceding the terminal chamber; (N) operculum of a specimen from AM W21471: it is similar to that of the preceding specimen, but has two partitions proximal to the cylindrical chamber.