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Figure 6. Transverse sections through a in Foregut anatomy and predation by Charonia lampas (Gastropoda: Prosobranchia: Neotaenioglossa) attacking Ophidiaster ophidianus (Asteroidea: Ophidiasteridae) in the Açores, with a review of triton feeding behaviour

Figure 6. Transverse sections through a single acinus of the posterior salivary glands of (A) Charonia lampas and (B) Gyrineum natator.

Figure 5 in Foregut anatomy and predation by Charonia lampas (Gastropoda: Prosobranchia: Neotaenioglossa) attacking Ophidiaster ophidianus (Asteroidea: Ophidiasteridae) in the Açores, with a review of triton feeding behaviour

Figure 5. Charonia lampas. (A) A detail of the salivary glands and their duct system after being turned to the left through 180◦; (B) a row of teeth that make up the taenioglossan radula; (C) the paired jaws at the entrance to the mouth.

Figure 3 in Foregut anatomy and predation by Charonia lampas (Gastropoda: Prosobranchia: Neotaenioglossa) attacking Ophidiaster ophidianus (Asteroidea: Ophidiasteridae) in the Açores, with a review of triton feeding behaviour

Figure 3. Charonia lampas. Faeces produced after consuming an autotomised arm of Ophidiaster ophidianus. (A) Phase 1, after consumption of the tube feet, coelomic tube feet ampullae, pyloric caecae and gonads. (B) Phase 2, after consumption of the exoskeleton.

Figure 4 in Foregut anatomy and predation by Charonia lampas (Gastropoda: Prosobranchia: Neotaenioglossa) attacking Ophidiaster ophidianus (Asteroidea: Ophidiasteridae) in the Açores, with a review of triton feeding behaviour

Figure 4. Charonia lampas. The foregut anatomy of the preserved specimen obtained from Spain, and as seen from the dorsal aspect.

Figure 2 in Foregut anatomy and predation by Charonia lampas (Gastropoda: Prosobranchia: Neotaenioglossa) attacking Ophidiaster ophidianus (Asteroidea: Ophidiasteridae) in the Açores, with a review of triton feeding behaviour

Figure 2. Charonia lampas consuming an autotomised arm of Ophidiaster ophidianus. (A, B) Phase 1, consumption of the tube feet (A); consumption of the coelomic tube feet ampullae, pyloric caecae and gonads (B). (C, D) Phase 2, consumption of the exoskeleton.

Figure 1 in Foregut anatomy and predation by Charonia lampas (Gastropoda: Prosobranchia: Neotaenioglossa) attacking Ophidiaster ophidianus (Asteroidea: Ophidiasteridae) in the Açores, with a review of triton feeding behaviour

Figure 1. Charonia lampas attacking Ophidiaster ophidianus. (A) Charonia lampas pursues its potential prey and "taps" it with its tentacles. Ophidiaster ophidianus attempts to flee. (B) Charonia lampas captures one of the prey arms, which is instantly autotomised. Ophidiaster ophidianus makes its escape after leaving behind the arm, which autotomised further into two pieces.

Figure 8 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 8. Gyrineum natator. Phase-contrast micrographs of the salivary glands of three individuals following treatment with barium chloride for 50 minutes. (A–C) Three untreated controls; (D–F) three treated individuals.

Figure 2 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 2. Gyrineum natator. The holes made in four shells (A–D) of Saccostrea mordax by individuals held in experimental aquaria. Only A shows a near-circular access hole, but other irregular ones (B–D) appear to have been created by acid attack as there would be no need for the radula alone to make such large holes.

Figure 4 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 4. Gyrineum natator. The relationship between shell height (in mm) and wet tissue weights [Log(W + 1) (in grams)] of seven individuals including the two experimental animals with shell heights of 34.6 and 33.6 mm.

Figure 5 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 5. Gyrineum natator. The accumulated % wet tissue weights of oyster tissues consumed by the two approximately equal-sized individuals of G. natator held in filtered and unfiltered seawater aquaria.

Figure 1 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 1. Gyrineum natator. The living animal as seen from the ventral aspect crawling on an upturned sheet of glass immersed in seawater, and showing the extended proboscis.

Figure 7 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 7. Gyrineum natator. (A) A transverse section through one of the paired salivary glands and the associated pharyngeal (oesophageal) gland; (B) developing salivary gland tubules at the outer edge of the salivary gland; (C) fully developed sulphuric acid producing salivary gland cells; (D) a transverse section through a pharyngeal (oesophageal) gland tubule; (E) a transverse section through the salivary gland/pharyngeal gland duct.

Figure 3 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 3. Saccostrea mordax. The relationship between total weight [Log(TotW + 1) (in grams)] and wet tissue weights [Log(W + 1) (in grams)] of the 34 oyster individuals.

Figure 9 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 9. Gyrineum natator. Phase-contrast micrographs of (A) the salivary gland and (B) the pharyngeal (oesophageal) gland after treatment with barium chloride for 50 minutes.

Figure 6 in The feeding strategy of the predatory Gyrineum natator (Gastropoda: Neotaenioglossa: Ranellidae) in the Cape d'Aguilar Marine Reserve, Hong Kong, with a review of sulphuric acid use in prey access by the Tonnoidea and experimentally derived estimates of consumption

Figure 6. Gyrineum natator. The foregut anatomy, as seen from the dorsal aspect, and showing the hypertrophied and paired salivary glands and the single pharyngeal (oesophageal) gland. Redrawn after Taylor (1998).