Rynkatorpa

Rowe & Pawson, 1967

10 species

Tentacles 12. Anchors and anchor plates all of one kind, but varying in size. Anchors not conspicuously asymmetrical. Anchor plates more or less elongate and irregular in outline, with few (25-50) perforations, of which the two near center of plate are usually conspicuously larger than the rest (except in R. uncinata). Perforations with smooth or spinous margins. Polian vesicles usually one to three (except in R. uncinata) which has four to five. (Rowe & Pawson, 1967)

Anchors and anchor plates all of one kind, anchors not conspicuously asymmetrical. Anchor plates more or less elongate and irregular in outline, with few (25-50) perforations, of which 2 near the center are conspicuously larger than others. Perforations with smooth or spinous margins. Polian vesicle usually one to three (except in R. uncinata which has 4-5). (Pawson, 1970)