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Figure 34. Specimens of Janthina exigua Lamarck and Janthina umbilicata d’Orbigny; SEM. (A-C, E-F) Janthina exigua, 
2 specimens, GNS RM5852, Waikanae Beach, west Wellington, New Zealand; A, whole shell; B, sculpture on last whorl at 
apex of outer lip sinus; C, lateral view of protoconch; E, F, apical views of whole shell and protoconch. (D, G-H) Janthina 
umbilicata, GNS RM5312, Piha Beach, west Auckland, New Zealand; D, sculpture on last whorl at apex of outer lip sinus, 
to same scale as Fig. 34B; G-H, lateral views of whole shell and protoconch. Scale bars: A, E, G, 2 mm; B, D, 500 pm; 
C, H, 200 pm; F, 300 pm. 
