Aplidium spitzbergense Hartmeyer, 1903

(Figures 5A)

Material examined. Matua Island, Point Kluv, intertidal pool, 0 6.08.2017, one colony (#419).

Remarks. The species has characteristic small zooids with four rows of stigmata and five stomach folds. Photos of living colonies of this species show flat dirty-yellowish colonies with some amount of sand on surface and with large sessile common cloacal openings and double rows of zooids radiating from them. Existing photos (Figure 5A) are not good and detailed organization of systems of zooids cannot be revealed.