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Fig. 9. Discoplax aff. hirtipes from Christmas Island. A in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 9. Discoplax aff. hirtipes from Christmas Island. A, probably male, ca. 80 mm carapace width (not collected), Waterfall Bay (Photograph by: H. H. Tan, 2007); B, female (47.1 × 39.7 mm) (ZRC 2012.0003), station CI 16.

Fig. 7. G1s. A–E in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 7. G1s. A–E, Discoplax hirtipes (Dana, 1851), neotype male (64.2 × 53.0 mm) (ZRC 2010.0415), Suva, Fiji; F–J, D. celeste, new species, holotype male (106.0 × 83.6 mm) (QMW-29123 ex ZRC 2011.0168), Waterfall Bay, Christmas Island.

Fig. 5 in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 5. Discoplax hirtipes (Dana, 1851) s. str. A, neotype male (64.2 × 53.0 mm) (ZRC 2010.0415), Suva, Fiji; B, C, male (93.5 × 73.4 mm) (ZRC 2001.2230), Pago Bay, Guam. A, B, dorsal overall views; C, frontal view of carapace.

Fig. 3 in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 3. Discoplax celeste, new species. Holotype male (106.0 × 83.6 mm) (QMW-29123), Waterfall Bay, Christmas Island. A, dorsal view; B, frontal view of carapace; C, outer view of chelae.

Fig. 1 in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 1. Discoplax celeste, new species. Colour in life. Holotype male (106.0 × 83.6 mm) (QMW-29123), Waterfall Bay, Christmas Island. A, dorsal view; B, frontal view.

Fig. 6. Male abdomens and anterior thoracic sternums. A in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 6. Male abdomens and anterior thoracic sternums. A, Discoplax hirtipes (Dana, 1851), neotype male (64.2 × 53.0 mm) (ZRC 2010.0415), Suva, Fiji; B, D. hirtipes (Dana, 1851), male (73.5 × 58.4 mm) (ZRC 2001.0706), Merizo Bay, Guam; C, D. celeste, new species, paratype male (52.0 × 44.0 mm) (ZRC 2012.0027), station CI 11, Hosnie's Spring, Christmas Island; D, D. celeste, new species, holotype male (106.0 × 83.6 mm) (QMW-29123), Waterfall Bay, Christmas Island.

Fig. 4. Discoplax celeste, new species. A in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 4. Discoplax celeste, new species. A, paratype male (52.0 × 44.0 mm) (ZRC 2012.0027), station CI 11, Waterfall Bay, Christmas Island; B, paratype male (84.3 × 65.7 mm) (ZRC 2011.0166), Waterfall Bay, Christmas Island.

Fig. 8 in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 8. Top, Discoplax celeste, new species; bottom, Discoplax aff. hirtipes. Waterfall Bay, Christmas Island (specimens not collected), all ca. 80 mm carapace width (Photograph by: H. H. Tan, 2007).

Fig. 2. Discoplax celeste, new species. Colour changes with size. A in The Blue Crab Of Christmas Island, Discoplax Celeste, New Species (Crustacea: Decapoda: Brachyura: Gecarcinidae)

Fig. 2. Discoplax celeste, new species. Colour changes with size. A, juvenile (7.9 × 7.1 mm) (ZRC 2012.0028a); B, female (15.9 × 14.1 mm) (ZRC 2012.0028b); C, female (22.3 × 19.0 mm) (ZRC 2012.0028c); D, female (27.5 × 23.5 mm) (ZRC 2012.0028d); E, female (39.0 × 34.0 mm) (ZRC 2012.0028e); F, male (44.4 × 38.7 mm) (ZRC 2012.0028f); G, female (42.4 × 35.8 mm) (ZRC 2012.0018a); H, female (47.1 × 39.2 mm) (ZRC 2012.0018b). A–F from station CI 32, Hugh's Dale, Christmas Island; G, H, from station CI 23, Waterfall Bay, Christmas Island.

Fig. 14. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 14. Macrobrachium xmas n. sp., coloration of live specimens. A, paratype ovigerous female (pocl 21.66 mm) (ZRC 2015.281), Whip Cave; B, C, paratype ovigerous female (pocl 20.20 mm) (QM-W28316), Freshwater Cave (Photographs by: HH Tan).

Fig. 12. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 12. Macrobrachium xmas n. sp., paratype ovigerous female (pocl 20.20 mm) (QM-W28316). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view; C, right second pereiopod, lateral view; D, left second pereiopod, lateral view; E, same, basal part of fingers, dorsal view. Scale bars = 1.0 mm.

Fig. 11. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 11. Macrobrachium xmas n. sp., paratype ovigerous female (pocl 21.66 mm) (ZRC 2015.281). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view (left), dorsal view (right); C, right second pereiopod, lateral view; D, left second pereiopod, lateral view. Scale bars = 1.0 mm.

Fig. 10. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 10. Macrobrachium xmas n. sp., paratype male (pocl 13.22 mm) (RUMF-ZC-2802). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view (left), dorsal view (right); C, right second pereiopod, lateral view; D, left second pereiopod, lateral view. Scale bars = 1.0 mm.

Fig. 9. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 9. Macrobrachium xmas n. sp., paratype male (pocl 16.26 mm) (ZRC 2015.282). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view (left), dorsal view (right); C, left second pereiopod, lateral view; D, same, basal part of fingers, dorsal view; E, right second pereiopod, lateral view. Scale bars = 1.0 mm.

Fig. 7. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 7. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). Third to fifth pereiopods, lateral view. A, third pereiopod, lateral view; B, same, posterior part of propodus, lateral view; C, fourth pereiopod, lateral view; D, same, posterior part of propodus, lateral view; E, fifth pereiopod, lateral view; F, same, posterior part of propodus, lateral view. Scale bars = 1.0 mm.

Fig. 4. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 4. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). A, rostrum and carapace, lateral view; B, tip of rostrum, lateral view; C, rostrum, anterior part of carapace and cephalic appendages, dorsal view; D, epistome, venral view; E, abdomen and telson, and left uropod, lateral view: F, posterior margin of sixth abdominal sternite and interuropodal sclerite, ventrolateral view; G, same, ventral view; H, telson, dorsal view; I, posterior margin of telson, dorsal view; J, eye (left side), ventral view (above), dorsal view (below). Scale bars = 1.0 mm.

Fig. 6. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 6. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). Chelipeds. A, first pereiopod, lateral view; B, chela of first pereiopod, ventral view; C, right second pereiopod, lateral view; D, same, tip of dactylus, dorsal view; E, same, basal part of fingers, dorsal view; F, left second pereiopod, lateral view; G, same, tip of dactylus, dorsal view; H, same, tip of fixed finger, dorsal view; I, same, basal part of fingers, dorsal view. Scale bars = 1.0 mm.

Fig. 3 in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 3. Macrobrachium miyakoense Komai & Fujita, 2005, coloration of live specimens. A, adult male (RUMF-ZC-2665), dorsal view; B, same, lateral view; C, adult female (RUMF-ZC-2664), dorsal view; D, same, lateral view.

Fig. 5. Macrobrachium xmas n in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 5. Macrobrachium xmas n. sp., holotype male (pocl 18.74 mm) (QM-W28315). Left appendages. A, antennule, ventral view; B, antenna, ventral view; C, basal part of right antenna, ventral view; D, mandible, ventral view; E, maxillule, ventral view; F, maxilla, ventral view; G, first maxilliped, ventral view; H, second maxilliped, ventral view; I, third maxilliped, lateral view; J, endopod of first pleopod, ventral view; K, appendix interna and appendix masculine of second pleopod, mesial view. Scale bars = 1.0 mm.

Fig. 2 in A new stygobitic prawn of the genus Macrobrachium Spence Bate, 1864, from anchialine caves in Christmas Island, Indian Ocean; with a rediagnosis of M. miyakoense Komai & Fujita, 2005 (Crustacea: Decapoda: Caridea: Palaemonidae)

Fig. 2. Macrobrachium miyakoense Komai & Fujita, 2005, adult female (pocl 21.8 mm) from Miyako Island, Ryukyu Islands, Japan (RUMF-ZC-2664). A, rostrum, carapace, and cephalic appendages, lateral view; B, eye (left side), ventral view; C, left second pereiopod; D, right second pereiopod; E, same, basal part of fingers, dorsal view. Scale bars = 1.0 mm.