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FIG. 1 in Comparative morphology of Tonicia (Polyplacophora) geographical ecotypes from Southeastern Pacific

FIG. 1. Photos of live specimens of Tonicia calbucensis. A. Northern ecotype, Coquimbo (~29°S). B. Northern ecotype, Talcahuano (~36°S). C. Southern ecotype, Huinay (~41°S). D. Southern ecotype Valdivia (~39°S). РИС. 1. Фотографии живых ЭкЗемплЯров Tonicia calbucensis. A. Северный Экотип, Коквимбо (~29°S). B. Северный Экотип, Талькахуано, (~36°S). C. Южный Экотип, Уйнай (~41°S). D. Южный Экотип, ВальдивиЯ (~39°S).

FIG. 3 in Comparative morphology of Tonicia (Polyplacophora) geographical ecotypes from Southeastern Pacific

FIG. 3. Tonicia calbucensis, southern ecotype, South Chile, 42°22'S, 72°25'W, 5–20 m, BL 20.5 mm, 04.01.2005, leg. B. Sirenko. A. Valve VII, jugal area. B, D. Dorsal spicules. C. Dorsal, marginal and ventral spicules. РИС. 3. Tonicia calbucensis, южный Экотип, южное Чили, 42°22'S, 72°25'W, 5–20 м, BL 20,5 мм, 04.01.2005, собрал B. Sirenko. A. Щиток VII, югальное поле. B, D. Дорсальные спикулы. C. Дорсальные, маргинальные и вентральные спикулы.

FIG. 15 in Comparative morphology of Tonicia (Polyplacophora) geographical ecotypes from Southeastern Pacific

FIG. 15. Tonicia chilensis, southern ecotype, Chile, Magellan Strait, 53°37'S, 70°56'W, 0.5–3.0 m, BL 18.5 mm, 18.05.2000, leg. B. Sirenko. A. Valve I, dorsal view. B. Valve II, dorsal view. C. Valve V, dorsal view. D. Valve VIII, dorsal view. E. Valve V, jugal and pleural areas. F. Valve V, rostral view. G. Valve VIII, lateral view. РИС. 15. Tonicia chilensis, южный Экотип, Чили, пролив Магеллана, 53°37'S, 70°56'W, 0.5–3.0 m, BL 18.5 mm, 18.05.2000, собрал. B. Sirenko. A. Головной Щиток вид сверху. B. Щиток II, вид сверху. C. Щиток V, вид сверху. D. Щиток VIII, вид сверху. E. Щиток V, югальное и плевральное полЯ. F. Щиток V, вид спереди. G. Щиток VIII, вид сбоку.

FIG. 17 in Comparative morphology of Tonicia (Polyplacophora) geographical ecotypes from Southeastern Pacific

FIG. 17. Shape differences in Tonicia ecotypes, resulting from combined principal components analysis. The two species studied are shown in different colors. A. Tonicia calbucensis. B. Tonicia chilensis. РИС. 17. РаЗличиЯ в форме Экотипов Tonicia, полученные в реЗультате комбинированного аналиЗа основных компонентов. Два иЗученных вида покаЗаны раЗными цветами. A. Tonicia calbucensis. B. Tonicia chilensis.

FIG. 14 in Comparative morphology of Tonicia (Polyplacophora) geographical ecotypes from Southeastern Pacific

FIG. 14. Tonicia chilensis, northern ecotype, Chile, Calfuco, intertidal, BL 20.6 mm, 16.01.2005, leg. B. Sirenko. A, B. Radula. РИС. 14. Tonicia chilensis, северный Экотип, Чили, Калфуко, литораль BL 20,6 мм, 16.01.2005, собрал B. Sirenko. A, B. Радула.

FIG. 6 in Chitons (Mollusca, Polyplacophora) from Rapa, the southernmost island of Polynesia

FIG. 6. — Chiton (Rhyssoplax) rapaitiensis n. sp.,holotype,Rapa Island, RAPA 2002, stn 10, radula, anterior part. Scale bar: 500 µm.

FIG. 4. — Leptochiton hiriensis n in Chitons (Mollusca, Polyplacophora) from Rapa, the southernmost island of Polynesia

FIG. 4. — Leptochiton hiriensis n. sp., Rapa Island, RAPA 2002: A, holotype, stn 9, 5.5 mm, dorsal girdle scales, next to the suture; B-F, specimen, stn 30, 1.2 mm; B, ribbed marginal scales; C, dorsal girdle needle; D, F, marginal girdle needle, among ventral girdle scales; E, ventral girdle scales. Scale bars: A, C-F, 10 µm; B, 20 µm.

FIG. 2. — Leptochiton hiriensis n in Chitons (Mollusca, Polyplacophora) from Rapa, the southernmost island of Polynesia

FIG. 2. — Leptochiton hiriensis n. sp., Rapa Island, RAPA 2002: A-C, holotype, stn 9, 5.5 mm; A, complete specimen in dorsal view, anterior region on the right side; B, detail of valve ii, left side; C, sutural region of valves vi-vii, left side; D-F, paratype, stn 16, 1.3 mm; D, head and second valve in situ, dorsal view; E, valve vii, dorsal view; F, tail valve, dorsal view. Scale bars: A, 400 µm; B, C, 10 µm; D-F, 100 µm.

FIG. 7 in Chitons (Mollusca, Polyplacophora) from Rapa, the southernmost island of Polynesia

FIG. 7. — Chiton (Rhyssoplax) rapaitiensis n. sp., paratype, Rapa Island, RAPA 2002, stn 25, 2.7 mm: A, cluster of eggs, HMDS dried, from the right mantle cavity side; B, dorsal surface of an egg (marked by an arrow in A). Scale bars: A, 100 µm; B, 10 µm.

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FIG. 2. — Acanthochitona oxum n in Taxonomic study on the Polyplacophora (Chitonida: Ischnochitonidae et Acanthochitonidae) collected by the Marion Dufresne (MD55) expedition, with description of a new species

FIG. 2. — Acanthochitona oxum n. sp.; dorsal view; A, valve i; B, valve v; C, valve viii; D, E: details of the valve v, showing pustules with aesthetes (D) and detail of a pustule (E); F, details of the perinotum; G‒H: detail of the radula, radula, panoramic (G) and dorsal (H) views; I, details of the hyponotum. Scale bars: A-C, 100 μm; D, I, 20 μm; E, 3 μm; F, 100 μm; G, 30 μm; H, 10 μm.

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FIG. 1. — A‒E in Taxonomic study on the Polyplacophora (Chitonida: Ischnochitonidae et Acanthochitonidae) collected by the Marion Dufresne (MD55) expedition, with description of a new species

FIG. 1. — A‒E, Stenoplax marcusi (Righi, 1971); A, B, lateral view; C, frontal view; D, dorsal view; E, posterior view; F-J. Acanthochitona terezae Guerra-Junior, 1983; F, G, lateral view; H, frontal view; I, dorsal view; J, posterior view; K‒O, Acanthochitona ciroi Righi, 1971; K, L, lateral view; M, frontal view; N, dorsal view; O, posterior view; P‒T, Acanthochitona oxum n. sp.; P‒Q, lateral view; R, frontal view; S, dorsal view; T, posterior view. Scale bars: 1 mm.

Fig. 11 in Two new species of the family Leptochitonidae (Mollusca: Polyplacophora) from the tropical and subtropical shallow waters of the West Pacific

Fig. 11. Terenochiton nomurai, holotype (NSMT-Mo79027), Japan, Okinawa, Iriomote Island. 6.0 mm. A – arrangements of granules and aesthete pores (schematic drawing); B – dorsal girdle scale; C – intersegmental needle; D – marginal scale; E – ventral scale; F, G – ventral scale near girdle margin; H – central and first lateral teeth (semi-schematic drawing); I, J – head of major lateral tooth. Scale bars: 10 µm for H–J, 20 µm for B, D–G, 100 µm for C.

Fig. 9 in Two new species of the family Leptochitonidae (Mollusca: Polyplacophora) from the tropical and subtropical shallow waters of the West Pacific

Fig. 9. Terenochiton nomurai, holotype (NSMT-Mo79027), Japan, Okinawa, Iriomote Id. BL 6.0 mm. A – valve I, ventral view; B – close up of square portion in A, showing rudiment of insertion plate; C – valve II, ventral view; D – close up of square portion in C, showing rudiment of insertion plate; E – same rudiment in D, slightly anterior view; F, G – valve VIII, rudiment of insertion plate, ventral and ventro-lateral views. r – rudiment of insertion plate.

Fig. 7. Terenochiton nomurai, A in Two new species of the family Leptochitonidae (Mollusca: Polyplacophora) from the tropical and subtropical shallow waters of the West Pacific

Fig. 7. Terenochiton nomurai, A – holotype (NSMT-Mo79027), Japan, Okinawa, Iriomote Island. BL 6.0 mm; B – paratype (NSMT-Mo 79028), Japan, Okinawa, Kuroshima Island. BL 3.4 mm. A, B – whole animals, arrow head indicating intersegmental needle.

Fig. 10. Terenochiton nomurai, A, B, D, E in Two new species of the family Leptochitonidae (Mollusca: Polyplacophora) from the tropical and subtropical shallow waters of the West Pacific

Fig. 10. Terenochiton nomurai, A, B, D, E – holotype (NSMT-Mo79027), Japan, Okinawa, Iriomote Island. BL 6.0 mm; C, F – paratype (NSMT-Mo 79028), Japan, Okinawa, Kuroshima Id. BL 3.4 mm. A – dorsal girdle scales; B, E – head of major lateral teeth; C – radula, dorsal view; D – central part of radula; F – marginal part of radula.

Fig. 5 in Two new species of the family Leptochitonidae (Mollusca: Polyplacophora) from the tropical and subtropical shallow waters of the West Pacific

Fig. 5. Leptochiton pumilus, paratype (MNHM-IM-2013-850), Papua New Guinea, Madang, east of the airport, Expédition PAPUA NIUGINI, stn PD4, BL 2.0 mm. A – scales around girdle margin; B – dorsal scales and intersegmental needle.

Fig. 3 in Two new species of the family Leptochitonidae (Mollusca: Polyplacophora) from the tropical and subtropical shallow waters of the West Pacific

Fig. 3. Leptochiton pumilus, holotype (MNHM IM-2013-2051), Papua New Guinea, Kranket Island, Expédition PAPUA NIUGINI, stn PB12. BL 2.5 mm. A – dorsal girdle scales; B – central portion of radula, dorsal view; C – ditto, posterior view; D – central portion of radula, close up.

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Fig. 10 in New chitons (Mollusca: Polyplacophora) of the genera Rhyssoplax, Lucilina and Onithochiton from shallow waters of Papua New Guinea

Fig. 10. Onithochiton maklayi, holotype (ZISP 2305), Papua New Guinea, Astrolabe Bay, Bilibili Island, intertidal, rocks, BL 36.0 mm. A – valve IV, surface of tegmentum in central and lateral areas; B – dorsal spicules and needles; C – dorsal spicules and needles, marginal needles and ventral scales; D – dorsal spicules.

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Fig. 8 in New chitons (Mollusca: Polyplacophora) of the genera Rhyssoplax, Lucilina and Onithochiton from shallow waters of Papua New Guinea

Fig. 8. Lucilina nemirkoae, holotype (ZISP 2304), Papua New Guinea, Bismarck Archipelago, Manus Island, 1 m. BL 7.0 mm. A – dorsal spicules and needles; B, D – ventral scales; C – dorsal spicules, needles and marginal needles.