Pseudoterebellinae new subfamily

( Seraphsidae)

Type. Terebellum Röding, 1798, p. 135 .

RegNum Registration Number. 681.

Reference Phylogeny. Figure 3.

Definition. The maximum clade consisting of Terebellum terebellum (Linnaeus, 1758) and all species that share a more recent common ancestor with it than with Seraphs sopitus (Brander, 1766), Mauryna plicata (d’Archiac & Haime, 1853) or Diameza fragilis (Defrance, 1825) .

Diagnosis. The adult shell is evolute, and is typically long and narrow. The stromboidal notch is not well developed or is absent. The shell lacks a posterior canal. It is typically smooth, or with reduced sculpture where present.

Composition. Pseudoterebellinae contains the three genera Terebellum, Pseudoterebellum, and Paraseraphs, the content of which are detailed herein, and belongs to the Seraphsidae, but excludes Mauryna and Seraphsinae .

Remarks. This clade is erected to hold the evolute members of the Seraphsidae .