Chun 1897
Body long and narrow, quite strongly compressed in the stomodeal plane. With pronounced aboral keels. All comb rows end at level of keels, uneven; substomodeal ones somewhat longer than the subtentacular ones. Meridional canals extending into keels. Tentacle bases long and narrow, located at the level of the infundibulum. Tentacle sheaths open at base of keels. Stomodeum voluminous, quite long. Infundibulum short. Color of body clear, tentacles and stomodeum reddish. Length to 60 mm.