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FIG. 22. — A, B in The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca

FIG. 22. — A, B, Gymnobela abyssorum (Locard, 1897), shell from DW120 (10.5 mm); new to the Canaries; C, D, Kurtziella serga (Dall, 1881), shell from DW130 (7.7 mm); new to the Canaries; E, Kurtziella serga, shell from DW129 (8.8 mm); F, G, Famelica monotropis (Dautzenberg & H. Fischer, 1896), shell from DW130 (5.7 mm); new to Spanish waters; H-I, Neopleurotomoides callembryon (Dautzenberg & H. Fischer, 1896), shell from DW130 (2.3 mm); new to Spanish waters; J, Neopleurotomoides callembryon, scanning electron micrograph of the protoconch of another shell from DW130; K-L, Pleurotomella demosia (Dautzenberg & H. Fischer, 1896), shell from DW126 (8.7 mm); new to the Canaries; M-N, Pleurotomella eurybrocha (Dautzenberg & H. Fischer, 1896), shell from DW130 (3.8 mm); new to the Canaries. Scale bar: J, 500 µm, all measurements refer to shell height.

FIG. 25. — A-C in The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca

FIG. 25. — A-C, Spirolaxis lamellifer (Rehder, 1935), shell from DW120 (diameter 3.7 mm); new to the Canaries; D-F, Orbitestella pruinosa n. sp., holotype from DW130 (diameter 0.8 mm); G, Graphis gracilis (Monterosato, 1874), shell from DW130 (height 2.1 mm); H, I, Odostomia madeirensis Peñas, Rolán & Swinnen, 2014, shell from DW133 (height 2.2 mm); new to Spanish waters; J, K, Liostomia canaliculata n. sp., holotype from DW130 (height 1 mm); L, M, Ringicula pirulina Locard, 1897, shell from DW130 (6.4 mm); N, Colpodaspis pusilla M. Sars, 1870, shell from DW126 (1.4 mm); new to the Canaries.

FIG. 11. — A-C in The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca

FIG. 11. — A-C, Discaclis canariensis Moolenbeek & Warén, 1987, shell from DW133 (diameter 1.2 mm); D-J, Discaclis lamellata n. sp.: D-F, holotype (sh.) from DW130 (diameter 1.0 mm); G, paratype (sh.), same locality (diameter 0.95 mm); H, protoconch of another paratype; I, protoconch of another paratype in apical view; J, microsculpture on the shoulder, same shell as I. Scale bars: H, I, 100 µm; J, 20 µm.

FIG. 2. — A, B in The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca

FIG. 2. — A, B, Bathysciadium costulatum (Locard, 1898), shell from DW130 (2.3 mm length); new to Spanish waters; C, D, Copulabyssia corrugata (Jeffreys, 1883), shell from DW130 (1.6 mm length); new to the Canaries; E, F, Profundisepta profundi (Jeffreys, 1877), shell from DW130 (3.6 mm length); new to Spanish waters; G, H, Fissurisepta granulosa Jeffreys, 1883, shell from DW130 (2.3 mm length); new to the Canaries; I-J, Satondella danieli Segers, Swinnen & Abreu, 2009, shell from DW130 (1.8 mm maximum diameter); new to Spanish waters.

FIG. 12 in A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins

FIG. 12. — Austinograea sp. aff. A. alayseae Guinot, 1990, ♂ 31.3 × 48.8 mm (right-handed), ♀ 29.6 × 44.8 mm (left-handed), Manus Basin, Shinkai 2000, 3°43.60'S, 151°40.32'E, PACMANUS site, field E, 1676 m (see Tsuchida & Hashimoto 2002), MNHN-IU-2016-10750 (= MNHN-B28761): A, male chelae, crusher and cutter, outer surfaces of palms; B, female chelae, cutter and crusher, outer surfaces of palms.

FIG. 11. — Austinograea jolliveti n in A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins

FIG. 11. — Austinograea jolliveti n. sp., holotype, ♂ 12.8 × 20.0 mm (right-handed), North Fiji Basin, STARMER II cruise, dive 18 (PL 18), Mussel Valley site, 18°50'S, 173°29'E, 2750 m, MNHN-IU-2016-10769: A, mxp3; B, thoracic sternum; C, G1 and G2 in situ (reconstructed); D, G1, two views; E, G2, two views. Scale bars: B, 5 mm; D, 1 mm; E, 0.5 mm (note the scale bars of the two gonopods, the G2 being about half-length of G1); A, C, without scale.

FIG. 4. — A-C, Austinograea hourdezi n in A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins

FIG. 4. — A-C, Austinograea hourdezi n. sp., holotype, ♂ 25.7 × 40.2 mm (right-handed), Lau Back-Arc Basin, TUIM06MV cruise, dive 142, Tow Cam site, 20°19.07'S, 176°08.24'W, 2719 m, MNHN-IU-2016-10737: A, B, chelae with two coloured spots on outer surface of palm of right crusher (A) and left cutter (B); C, G1 and G2 photographed in situ; D, E, Austinograea hourdezi n. sp., atypical ♀ 30.0 × 48.5 mm (right-handed), Lau Back-Arc Basin, MGLN07MV cruise, dive 230, Kilo Moana site, 20°03.23'S, 176°08.01'W, 2623 m, MNHN-IU-2016-10752: D, crusher with one marked dark spot and the other one, only discernible by a yellow trace (wound at base of fixed finger is not a spot comparable to that of A. jolliveti n. sp.); E, cutter with two indistinct spots, only as yellow traces.

FIG. 3. — Austinograea hourdezi n in A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins

FIG. 3. — Austinograea hourdezi n. sp. photographed in situ: A, Lau Basin, Lau Basin 2009 cruise, dive 432, Tow Cam site, 20˚18.98'S, 176˚08.19'W, 2723 m, 05.VI.2009 (type locality), among sessiles barnacles Eochionelasmus ohtai ohtai Yamaguchi, 1990. The two dark spots on outer surface of palm of both chelae indicate a male; see patches of dense setae on inner surface of both chelae, and the darkly coloured two-thirds of dactylus of right cheliped; B, C, Austinograea hourdezi n. sp., due to the patch of dense setae on inner surface of both chelae: B, Lau Basin, TUIM07MV cruise, dive 163, ABE site, 20°45.65'S, 176°11.45'W, 2130 m, 23.VI.2005; on a bed of gastropod Ifremeria nautilei Bouchet & Warén, 1991; C, Lau Basin, Lau Basin 2009 cruise, dive 431, ABE site, 20°45.65'S, 176°11.45'W, 2130 m, 03.VI.2009. The crab and the gastropods Alviniconcha hessleri sensu lato are blurry, the photography in situ having been taken in hydrothermal diffuse area with the emanating fluid visible as shimmering water. Photographies courtesy of C. R. Fisher (Penn State University, USA).

FIG. 8. — A, B in A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins

FIG. 8. — A, B, Austinograea alayseae Guinot, 1990, photographed in situ: see absence of patches of setae on inner surface of chelae: A, crab with white carapace, Lau Basin 2009 cruise, Kilo Moana site, 20°03.23'S, 176°08.01'W, 2621 m, among mussels Bathymodiolus brevior Cosel, Métivier & Hashimoto, 1994 and snails Ifremeria nautilei Bouchet & Warén, 1991; B, crab with carapace stained orange due to iron or manganese oxide deposits, and cluster of alvinocaridid shrimps, Lau Basin, TUIM07MV, Kilo Moana site, 20°03.23'S, 176°08.01'W, 2621 m; C, Austinograea hourdezi n. sp. (presumed identification, see p. 89), Lau Basin, Lau Basin 2009 cruise, Kilo Moana site, among mussels Bathymodiolus brevior, gastropods Ifremeria nautilei, sea anemone probably Cyananthea hourdezi Zelnio, Rodríguez & Daly, 2009, and alvinocaridid shrimp, Alvinocaris komaii Zelnio & Hourdez, 2009. This invidual with palm of preserved left cheliped (regenerated?) bearing only a single dark spot is atypical such as many Austinograea species showing regenerated chelipeds; patches of setae discernible just above on inner surface of chela and on right subhepatic region. Photographies courtesy of C. R. Fisher (Penn State University, USA).

FIG. 5. — Austinograea hourdezi n in A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins

FIG. 5. — Austinograea hourdezi n. sp., paratype, ♂ 29.8 × 48.1 mm (left-handed, with weak heterochely and heterodonty), Lau Back-Arc Basin, TUIM06MV cruise, dive 142, Tow Cam site, MNHN-IU-2016-10738: A, dorsal view; B, frontal view; C, mxp3; D, ventral view; E, G, both chelae with two typical spots on outer surface; F, H, both chelae with patches of setae on inner surface: E, F, cutter situated at right; G, H, crusher situated at left.

Fig. 16. Platymaia remifera Rathbun, 1916, overall dorsal view. A in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 16. Platymaia remifera Rathbun, 1916, overall dorsal view. A. Ovigerous ♀ (29.2 × 31.3 mm) (ZRC 2016.0089), South China Sea. B. ♂ (33.0 × 36.9 mm) (ZRC 1999.0769), Taiwan. Scale bars = 5 mm.

Fig. 13 in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 13. Colour in life. A. Naxioides robillardi (Miers, 1882), ♂ (39.2 × 24.5 mm) (ZRC 2016.01065), South China Sea. B. Oxypleurodon stimpsoni Miers, 1885, ♂ (with Sacculina, 14.0 × 9.0 mm) (ZRC 2016.0072), South China Sea. C. Oxypleurodon auritum (Rathbun, 1916), ♂ (16.7 × 11.1 mm) (ZRC 2016.0066), South China Sea. D. Oxypleurodon forte Lee, Corbari & Richer de Forges, 2015, ♂ (14.2 × 9.1 mm) (ZRC 2016.0078), South China Sea. E. Oxypleurodon sanctaeclausi Richer de Forges & Ng 2009, paratype, ♀ (18.7 × 16.8 mm) (ZRC 2009.0019) (after Richer de Forges & Ng 2009a). F. Stegopleurodon pteridion sp. nov., holotype, ♂ (13.1 × 7.9 mm) (NTOU), South China Sea. Scale bars: A = 10 mm; B–F = 5 mm.

Fig. 11. A–D in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 11. A–D. Rochinia strangeri Serène & Lohavanijaya, 1973, ♂ (12.1 × 8.0 mm) (ZRC 2016.0546), South China Sea, drawing of left G1. A. Ventral view. B. Ventral view of distal portion. C. Dorsal view. D. Dorsal view of distal portion. E–F. Rochinia kagoshimensis (Rathbun, 1932), holotype, ♂ (11.2 × 6.8 mm) (USNM 48253), off Kagoshima gulf, drawing of left G1. E. Ventral view. F. Dorsal view. G–J. Rochinia kagoshimensis (Rathbun, 1932) comb. nov., ♂ (10.7 × 6.9 mm) (ZRC 2016.0549), South China Sea, drawing of left G1. G. Ventral view. H. Ventral view of distal portion. I. Dorsal view. J. Dorsal view of distal portion.

Fig. 8. A. Rochinia kotakae Takeda, 2001 in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 8. A. Rochinia kotakae Takeda, 2001, ovigerous ♀ (14.0 × 9.1 mm) (ZRC 2016.0079), South China Sea, lateral view of carapace. B–C. Rochinia sp., ♀ (7.6 × 5.3 mm) (ZRC 2016.0551), South China Sea. B. Overall dorsal view. C. Lateral view of carapace. Scale bars: A = 5 mm; B–C = 2.5 mm.

Fig. 7 in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 7. Colour in life. A. Rochinia kotakae Takeda, 2001, ovigerous ♀ (14.0 × 9.1 mm) (ZRC 2016.0079), South China Sea. B. Rochinia strangeri Serène & Lohavanijaya, 1973, ♂ (12.2 × 8.0 mm) (ZRC 2016.0546), South China Sea. C. Rochinia kagoshimensis (Rathbun, 1932) comb. nov., ♂ (10.7 × 6.9 mm) (ZRC 2016.0549), South China Sea. Scale bars = 5 mm.

Fig. 4 in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 4. Colour in life. A. Oxypleurodon bipartitum (Guinot & Richer de Forges, 1986), ovigerous ♀ (10.9 × 9.6 mm) (NMCR) (after Richer de Forges & Ng 2009b). B. Oxypleurodon leonis sp. nov., paratype, ♂ (15.1 × 9.6 mm) (ZRC 2016.0541), South China Sea. Scale bars = 5 mm.

Fig. 2. Oxypleurodon stimpsoni Miers, 1885, overall dorsal view. A in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 2. Oxypleurodon stimpsoni Miers, 1885, overall dorsal view. A. ♂ (14.0 × 9.0 mm) (AM P34658), Indonesia. B. ♂ (14.9 × 10.2 mm) (ZRC 2011.0056), Philippines. C. ♂ (with Sacculina, 14.0 × 9.0 mm) (ZRC 2016.0072), South China Sea. Scale bar = 5 mm.

Fig. 12. Rochinia debilis Rathbun, 1932, overall dorsal view. A in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 12. Rochinia debilis Rathbun, 1932, overall dorsal view. A. Holotype, ♀ (10.8 × 7.0 mm) (USNM49572), Japan. B. ♂ (23.1 × 15.8 mm) (SMF49904), Japan. C. ♂ (28.9 × 21.0 mm) (SMF49905), Japan, carapace half cleaned. Scale bars: A = 5 mm; B–C = 10 mm.

Fig. 5 in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 5. Oxypleurodon leonis sp. nov., holotype, ♂ (13.5 × 9.0 mm) (NTOU), South China Sea. A. Overall dorsal view. B. Overall ventral view. C. Lateral view of carapace. Scale bars = 5 mm.

Fig. 15 in Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea)

Fig. 15. Stegopleurodon pteridion sp. nov., holotype, ♂ (13.1 × 7.9 mm) (NTOU), South China Sea, drawing of left G1. A. Ventral view. B. Ventral view of distal portion. C. Dorsal view. D. Dorsal view of distal portion.