Chlamylla borealis borealis Bergh, 1899, stat.n. ZMMU Op-479. Kara Sea, living animal 46 mm in length: A dorsal view B ventral view C right lateral view D left lateral view E details of cerata and notal edge F jaws, frontal view, light microscopy G details of masticatory process of jaw, SEM H radular teeth, middle part, SEM I details of small denticles on lateral teeth, SEM J reproductive system, light microscopy. Abbreviations: a anus gf genital fold nc continuous notal edge pc penial collar (external) pr prostate ps penial sheath vd vas deferens (muscular part). Scale bars: G = 500 μm; H =100 μm; I = 10 μm. Photos of living specimens by O.L. Zimina, other photos and SEM images by A.V. Martynov.