FIGURE 2 in Morphology and systematic position of Cingula tumidula G. O. Sars, 1878 (Gastropoda: Rissoidae)

FIGURE 2. Details of protoconch (A–D) and radula (E–F) of Pusillina tumidula. A–B. Eastern Barents Sea (Pechora Sea), 17.5 m, 69°15.61'N, 57°22.76'E, MMBI, no number; C. Franz Joseph Land, 44 m, 79º53.4'N, 51º26.06'E, MMBI, no number; D. White Sea, 85 m, 66°20'N, 30°E (specimen with costae), ZIN 35667/2; E–F. Dalne-Zelenetskaya Bay, 59 m, 69°07.92'N, 36°05.45'E, MMBI, no number. Scales: A, C–D = 300 µm, В = 50 µm, E = 20 µm, F = 5 µm.