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FIG. 2. — Nematocarcinus burukovskyi n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 2. — Nematocarcinus burukovskyi n. sp., holotype subadult entire animal in lateral view. Scale bar: 10 mm.

FIG. 9. — Nematocarcinus ovalis n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 9. — Nematocarcinus ovalis n. sp., holotype ovigerous, HOPE 99, stn 54803#3, NEPR, cl 27.5 mm (MNHN-Na 15765); A, third abdominal somite, dorsal view; B, posterior part of left fifth abdominal pleuron, ventral view, showing inner ridge; C, posteroventral spots and posterior setal pits of sixth abdominal somite, ventral view (setae omitted); D, right antenna, ventral view (setae omitted); E, distal part of left antennal scale, ventral view; F, chela of right first pereopod, lateral view; G, distal part of dactylus of right first pereopod, lateral view; H, chela of left second pereopod, lateral view; I, dactylus and propodus of right third pereopod, lateral view; J, dactylus of right third pereopod, obliquely ventral view. Scale bars: A, D, 5 mm; B, C, F, H, I, J, 1 mm; E, 2 mm; G, 0.5 mm.

FIG. 12 in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 12. — Nematocarcinus sp., ovigerous, site Genesis, HOT 96, DS Nautile dive 1070, cl 21.4 mm (MNHN-Na 15763); A, third to fifth abdominal somites, lateral view (setae omitted); B, third abdominal somite, dorsal view; C, left fifth abdominal pleuron, lateral view; D, sixth abdominal somite, ventral view (setae omitted); E, posteroventral spots and posterior setal pits, ventral view. Scale bars: A, B, 5 mm; C, D, 2 mm; E, 1 mm.

FIG. 5. — Nematocarcinus burukovskyi n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 5. — Nematocarcinus burukovskyi n. sp., holotype subadult, Wormwood vent site, SEPR, cl 18.6 mm (MNHN-Na 15768), left thoracic appendages; A, third maxilliped, lateral view; B, tip of ultimate segment of third maxilliped, mesial view; C, distal two segments of third maxilliped, mesial view; D, first pereopod, lateral view; E, fingers of first pereopod, lateral view; F, second pereopod, lateral view; G, fingers of second pereopod, lateral view; H-J, third to fifth pereopods, lateral view. Scale bars: A, D, F, H-J, 5 mm; B, 0.5 mm; C, 2 mm; E, G, 1 mm.

FIG. 8. — Nematocarcinus ovalis n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 8. — Nematocarcinus ovalis n. sp., holotype ovigerous, HOPE 99, stn 54803#3, NEPR, cl 27.5 mm (MNHN-Na 15765); A, rostrum, carapace and cephalic appendages, lateral view (distal part of rostrum, left eye and distal part of left antennal scale broken off; carapace somewhat deformed, thus dorsal notch more accentuated than real); B, anterior part of carapace, rostrum and cephalic appendages, lateral view; C, third abdominal somite to telson and left uropod, lateral view; D, posterior part of fifth abdominal somite and sixth somite, ventral view; E, telson, dorsal view. Scale bars: A-C, 5 mm; D, E, 2 mm.

FIG. 1 in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 1. — Map of the East Pacific and Antarctic Pacific Rises, showing sampling locations of specimens of Nematocarcinus burukovskyi n. sp., N. ovalis n. sp., and an indeterminate species.

FIG. 11 in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 11. — Nematocarcinus faxoni Burukovsky, 2001, paratype, off Marias Island, Mexico, cl 25.6 mm (USNM 21139); A, rostrum, anterior part of carapace and cephalic appendages, lateral view; B, posterior part of fifth abdominal somite and sixth somite, ventral view (setae omitted); C, posteroventral spots and posterior setal pits on sixth abdominal somite, ventral view; D, posterior part of right fifth abdominal pleuron, ventral view. Scale bars: A, 5 mm; B, 2 mm; C, D, 1 mm.

FIG. 10. — Nematocarcinus ovalis n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 10. — Nematocarcinus ovalis n. sp., holotype ovigerous, HOPE 99, stn 54803#3, NEPR, cl 27.5 mm (MNHN-Na 15765); A, right third maxilliped, lateral view; B, right first pereopod, lateral view; C, merus and ischium of left second pereopod, lateral view; D, chela and carpus of left second pereopod, lateral view; E, merus and ischium of right third pereopod, lateral view; F, dactylus, propodus and carpus of right third pereopod, lateral view. Scale bar: 5 mm.

FIG. 4. — Nematocarcinus burukovskyi n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 4. — Nematocarcinus burukovskyi n. sp., holotype subadult, Wormwood vent site, SEPR, cl 18.6 mm (MNHN-Na 15768), appendages dissected from left; A, mandible, dorsal view; B, same, ventral view; C, same, distal part of molar process, dorsal view; D, maxillule, ventral view (coxal endite partly broken); E, maxilla, ventral view; F, first maxilliped, ventral view (coxal endite broken); G, second maxilliped, ventral view; H, antenna, ventral view; I, prominences on sixth to eighth thoracic sternites, ventral view; J, appendix masculina and appendix interna of second pleopod, mesial view; K, posterolateral part of exopod of uropod, dorsolateral view. Scale bars: A-D, J, 0.5 mm; E-I, 2 mm; K, 1 mm.

FIG. 3. — Nematocarcinus burukovskyi n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 3. — Nematocarcinus burukovskyi n. sp., holotype subadult, Wormwood vent site, SEPR, cl 18.6 mm (MNHN-Na 15768); A, rostrum and carapace, lateral view (setae omitted); B, rostrum, anterior part of carapace and cephalic appendages, lateral view; C, posterior part of third abdominal somite to telson and left uropod, lateral view; D, sixth abdominal somite and posterior part of pleuron of fifth somite, slightly obliquely ventral view (setae omitted); E, telson, dorsal view; F, posterior part of telson, dorsal view. Scale bars: A, C, 5 mm; B, D, E, 2 mm; F, 1 mm.

FIG. 6. — Nematocarcinus burukovskyi n in Two new species of Nematocarcinus A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Nematocarcinidae) from hydrothermal vents on the North and South East Pacific Rise

FIG. 6. — Nematocarcinus burukovskyi n. sp., holotype subadult, Wormwood vent site, SEPR, cl 18.6 mm (MNHN-Na 15768); A, third abdominal somite, dorsal view; B, left fifth pleuron, lateral view (setae omitted); C, right fifth pleuron, lateral view; D, epipod on third maxilliped, lateral view; E, chela of first pereopod, lateral view; F, I, J, dactyli and propodi of third to fifth pereopod, lateral view; G, dactylus and distal part of propodus of third pereopod, lateral view (dorsodistal distal setae propodus omitted); H, dactylus of third pereopod, dorsal view; K, dactylus and distal part of propodus, proximolateral view; L, dactylus of fifth pereopod, dorsal (extensor) view. Scales: A, B, C, 2 mm; E, F, I, J, 1 mm; G, D, H, K, L, 0.5 mm.

FIGURE 11 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 11. Distribution of four Nematocarcinus species to Atlantic Ocean and adjacent areas of the Indian and Pacific oceans (white badges—previous records (Burukovsky, 2012), black badges—new records).

FIGURE 10 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 10. Nematocarcinus tenuipes Spence-Bate, 1888; ovigerous female (22.3 mm); MNRJ 21748; A. third abdominal somite pleura, lateral view; B. sixth abdominal somite, ventral view; C. telson, lateral view. Ovigerous female (21.0 mm); USNM 18537; D. telson and uropods, dorsal view.

FIGURE 9 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 9. Nematocarcinus tenuipes Spence-Bate, 1888; ovigerous female (23.4 mm); MNRJ 21750; A. carapace and frontal region, lateral view. Ovigerous female (22.7 mm); MNRJ 21747; B. carapace and frontal region, lateral view. Ovigerous female (22.3 mm); MNRJ 21748; C. abdominal somites 2–4, dorsal view; E. abdominal somites 4–6, lateral view. Ovigerous female (21.0 mm); USNM 18537; D. abdominal somites 2–4, dorsal view; F. abdominal somites 4–5, lateral view.

FIGURE 8 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 8. Nematocarcinus tenuipes Spence-Bate, 1888; ovigerous female (22.3 mm); MNRJ 21748; A. carapace and frontal region, lateral view. Male (13.3 mm); MNRJ 21751; B. carapace and frontal region, lateral view. Ovigerous female (27.0 mm); MNRJ 19176; C. carapace and frontal region, lateral view. Male (21.1 mm); MNRJ 21746; D. carapace and frontal region, lateral view. Ovigerous female (21.0 mm); USNM 18537; E. carapace and frontal region, lateral view.

FIGURE 7 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 7. Nematocarcinus rotundus Crosnier & Forest, 1973; ovigerous female (23.1 mm); MNRJ 23451; A. third abdominal somite pleura, lateral view. Ovigerous female (29.2 mm); MNRJ 14721; B. sixth abdominal somite, ventral view. Male (20.7 mm); MNRJ 14704; C. sixth abdominal somite, ventral view. Female (21.3mm); MNRJ 14713; D. sixth abdominal somite, ventral view. Ovigerous female (23.1 mm); MNRJ 23451; E. telson, lateral view.

FIGURE 6 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 6. Nematocarcinus rotundus Crosnier & Forest, 1973; female (29.5 mm); MNRJ 14721; A. entire, lateral view; B. abdominal somites 2–4, dorsal view; C. third abdominal somite pleura, lateral view; D. sixth abdominal somite, ventral view.

FIGURE 4. Nematocarcinus gracilipes Filhol, 1884 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 4. Nematocarcinus gracilipes Filhol, 1884; female (23.0 mm); South Mid Atlantic Ridge; MNRJ 22584; A. sixth abdominal somite, lateral view. Female (13.7 mm); South Mid Atlantic Ridge; MNRJ 22583; B. row of setae at distoventral organ, sixth abdominal somite, lateral view; C. spindle shaped setae at distoventral organ, sixth abdominal somite.

FIGURE 5 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 5. Nematocarcinus rotundus Crosnier & Forest, 1973; male (16.6 mm); MNRJ 14710; A. carapace and frontal region, lateral view. Ovigerous female (23.1 mm); MNRJ 23451; B. carapace and frontal region, lateral view; C. abdominal somites 2–4, dorsal view; D. abdominal somites 3–6, lateral view.

FIGURE 3. Nematocarcinus gracilipes Filhol, 1884 in Nematocarcinus Milne Edwards, 1881 (Crustacea, Decapoda) from Southwestern Atlantic, including the Southern Mid-Atlantic Ridge area

FIGURE 3. Nematocarcinus gracilipes Filhol, 1884; female (26.9mm); South Mid Atlantic Ridge; MNRJ 22583; A. carapace, lateral view; B. abdominal somites 2–6, lateral view; B. abdominal somites 3–5, dorsal view; D. sixth abdominal somite, ventral view; E. telson, lateral view. Male (22.7 mm); North Pacific Ocean; USNM 21147; F. carapace, lateral view. Female (14.5 mm); North Pacific Ocean; USNM 21144; G. rostrum, lateral view. Female (17.3 mm); North Pacific Ocean; USNM 21144; H. rostrum, lateral view.