Fig. 4 in Opisthobranch molluscs of «Cylichna occulta group» (Gastropoda: Opisthobranchia: Cylichnidae) from the Chukchi Sea and adjacent waters

Fig. 4. Cylichnoides occultus, shell: Chukchi Sea, Wrangel Isl., «Fyodor Litke», station 44 (A – 8.5 mm, ventral view); Wrangel Isl., Rodzhers Bay, station 4 (8.0 mm – B, 7.0 mm – C, ventral view); Greenland, identified previously as Cylichna insculpta (=Cylichna reinhardti) (8.0 mm – E, 6.5 mm – F); «Vega» expedition, 1876 (H – 4.0 mm, G – 5.0 mm, ventral view and D – apical view); Frantz Joseph Land (I – 7.2 mm, ventral view and J – apical view); K, L – Chukchi Sea, De Long Strait (K – apical view and L – 8.0 mm, ventral view); Cylichnoides sp. 1: «Fyodor Litke», station 44, Chukchi Sea, Wrangel Isl. (M – 7.8 mm).