The mantle is slightly raised into a rim (1) bearing caryophillidia around the rhinophore base.
The rhinophores are short, stout and usually conical with a translucent, whitish base, swollen anteriorly and posteriorly (2). The upper two thirds have about ten to fifteen close set lamellae, and a short nipple like apex (3). The lamellae often have dark brown speckling. Left and right lamellae meet at an anterior groove (4).
08 Jorunna tomentosa. Rhinophores from 34 mm and 55 mm long animals. Menai Strait, Wales.
