Figure 5 in Evolution of Janthina and Recluzia (Mollusca: Gastropoda: Epitoniidae)

Figure 5 (facing page 130). Living animals in aquaria. (A) Janthina janthina (Linnaeus), collected on Arina Beach, Heraklion, Crete, Mediterranean, showing partially contracted snout and forked cephalic tentacles, propodium between float and tentacles, snout resting in lip sinus, weak spiral grooves in base of shell, and small amount of ianthinin purple dye at right below snout. (B) Janthina pallida Thomson, all data as for Fig. 5A, showing float with pink egg capsules beneath, and snout partially expanded; part of float of another specimen visible at left. Faint spiral colour bands on this shell are unusual. (C) Janthina umbilicata d'Orbigny, collected on beach in northern New South Wales, Australia, showing long, narrow float as in J. exigua Lamarck, weakly expanded head and propodium (top left), and egg capsules beneath float. (D) Janthina janthina, all data as for Fig. 5C, odontophore and teeth visible in tip of expanded snout. (E) Janthina globosa (Swainson), all data as for Fig. 5C, showing float, anatomy essentially as in J. janthina, expanded head resting in lip sinus, forked cephalic tentacles partly visible, barnacles attached to Janthina shell, and pink eggs beneath float (A–B, reproduced with permission of Dimitris Poursanidis, Heraklion, Crete; C–E, reproduced with permission of Denis Riek, Brunswick Heads, NSW). Scale bars 10 mm.