Microchlamylla gracilis zfi subsp. n. Arctic, Franz Josef Land. ZMMU Op-501, specimen 11 mm length (fixed): A dorsal view (live) B lateral view (live) C ventral view (fixed) D details of cerata E egg masses on hydroids F jaws, SEM G radular teeth, posterior part, SEM H reproductive system. Abbreviations: a anus am ampulla fgm female gland mass nd discontinuous notal edge pvd prostatic vas deferens rsd distal receptaculum seminis. Scale bars: F = 300 μm; G = 30 μm; H = 1 mm. Photos of living specimens and eggs by O.V. Savinkin, other photos and SEM images by A.V. Martynov