Carronella enne sp. n. NE Atlantic, off Ireland. ZMMU Op-526, specimen 5 mm (fixed) in length: A dorsal view (live); B details of cerata C rhinophore D dorsal view (fixed) E ventro-lateral (fixed) F jaw, SEM G details of masticatory process of jaw, SEM H details of masticatory process of jaw, light microscopy I radular teeth, posterior part, SEM J reproductive system, light microscopy. Abbreviations: a anus am ampulla ce ceratal elevations fgm female gland mass g gonad go genital opening nd discontinuous notal edge ps penial sheath pvd prostatic vas deferens r rhinophores rsd distal receptaculum seminis rsp proximal receptaculum seminis. Scale bars: F = 300 μm; G, I = 30 μm. Photos of living specimens by E. Schwabe, other photos and SEM images by A.V. Martynov.