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FIGURE 2 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 2. Pictorial guide for valid species of Paracyatholaimus. Part 2, ending. Simplified images of species come from the published descriptions: pesavis—Wieser & Hopper, 1967; proximus—de Man, 1922; pugettensis—Wieser, 1959; quadriseta—Wieser, 1954a; rotundus—Gerlach, 1964a; saradi—Gerlach, 1967; separatus—Wieser, 1954b; spinulosus—Jensen, 1985; ternus—Wieser, 1954a; truncatus—Cobb, 1914; vancouverensis—Sharma & Vincx, 1982; vitraeus—Gerlach, 1957.

FIGURE 10 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 10. Desmodora striatocephala sp. nov., holotype male. A: total view; B: anterior body; C: posterior end. Scale bars: A 100 ìm; B, C 50 µ m.

FIGURE 1 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 1. Pictorial guide for valid species of Paracyatholaimus. Part 1, beginning. Simplified images of species come from the published descriptions: arcticus—Kreis, 1963; botosaneanui—Andrássy, 1973; chilensis—Gerlach, 1953b; diva—orig.; dubiosus—Meyl, 1954; duplicatus—Gerlach, 1964b; helicellus—Wieser, 1954a; intermedius—Gerlach, 1953a; lewisi—Coomans et al., 1985; occultus —Gerlach, 1956; paucipapillatus—Gerlach, 1955; pentodon—Riemann, 1966.

FIGURE 6 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 6. Paracyatholaimus diva sp. nov., cloacal region of the male N1 (holotype). Scale bar: 10 µ m.

FIGURE 5 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 5. Paracyatholaimus diva sp. nov., details. A: male N1 (holotype), anterior body; B: male N1 (holotype), posterior end; C: female (paratype), posterior end. Scale bars: 50 µm.

FIGURE 9 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 9. Pomponema proximamphidum sp. nov., details. A: male N1 (holotype), entire; B: male N3 (paratype), cloacal region. Scale bars: A 100 µ m; B 10 µ m.

FIGURE 4 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 4. Paracyatholaimus diva sp. nov., anterior ends. A: male N1 (holotype); B: female (paratype). Scale bars: 10 µ m.

FIGURE 11 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 11. Desmodora striatocephala sp. nov., details of the holotype male. A: Anterior end; B: cloacal region. Scale bars: 10 µ m.

FIGURE 8 in Three new species of freeliving nematodes from the SouthEast Atlantic Abyss (DIVA I Expedition) *

FIGURE 8. Pomponema proximamphidum sp. nov., details of the holotype male. A: anterior body; B: posterior end; C: copulatory apparatus. Scale bars: A, B 50 µm; C 10 µm.

FIGURE 5 in Caudacalanus (Copepoda, Calanoida): a new benthopelagic genus from the abyss of the tropical South Atlantic and Southern Ocean *

FIGURE 5. Caudacalanus vicinus gen. et sp. nov. Female, holotype. A, antenna; B, mandible, gnathobase; C, mandible palp; D, maxillule, a, praecoxal arthrite; b, coxal epipodite; c, coxal endite; d, endopodite; e, exopodite; E, maxilla; F, maxilliped, detail of endopod from paratype; G, P1. Scale bars 0.1 mm.

FIGURE 3 in Caudacalanus (Copepoda, Calanoida): a new benthopelagic genus from the abyss of the tropical South Atlantic and Southern Ocean *

FIGURE 3. Caudacalanus mirus gen. et sp. nov. Female, holotype except F. A, antennule, articulated segments 1–11 (ancestral segments I–XIV), dotted setae are additions from paratype; B, antennule, articulated segments 12–20 (ancestral segments XV–XXIII); C, antennule, articulated segments 21–25 (ancestral segments XXIV–XXVIII); D, antennule, articulated segments 2325 (ancestral segments XXVI–XXVIII); E, P1; F, P1 (from paratype), terminal part of exopod segment 3; G, P2; H, P3; I, P4. Scale bars 0.1 mm.

FIGURE 4 in Caudacalanus (Copepoda, Calanoida): a new benthopelagic genus from the abyss of the tropical South Atlantic and Southern Ocean *

FIGURE 4. Caudacalanus vicinus gen. et sp. nov. Female. A, habitus, dorsal; B, habitus, lateral; C, rostrum, ventral; D, urosome, ventral; E, urosome, lateral; F, anal somite and caudal rami, dorsal; G, antennule, articulated segments 1–10 (ancestral segments I–XIII); H, articulated segments 11–16 (ancestral segments XIV–XIX); I, antennule, articulated segments 17–22 (ancestral segments XX–XXV); K, antennule, articulated segments 2325 (ancestral segments XXVI– XXVIII); L, P2; M, P3; N, P4. E from paratype, other figures, holotype, dotted setae are additions from paratype. Scale bars 0.1 mm.

FIGURE 1 in Caudacalanus (Copepoda, Calanoida): a new benthopelagic genus from the abyss of the tropical South Atlantic and Southern Ocean *

FIGURE 1. Caudacalanus mirus gen. et sp. nov. Female. A, habitus, dorsal; B, habitus, lateral; C, rostrum, lateral; D, rostrum, ventral; E, prosome, posterior corners, dorsal; F, urosome, dorsal; G, urosome, lateral; H, prosome, posterior corners and genital somite, dorsal; I, prosome, posterior corners and genital doublesomite, lateral; K, genital doublesomite, ventral. (C, E–G), paratype, other figures holotype. Scale bars 0.1 mm.

FIGURE 7 in New records of Serpulidae (Annelida, Polychaeta) collected by R / V " Vityaz " from bathyal and abyssal depths of the Pacific Ocean

FIGURE 7. SEM of chaetae and uncini of Bathyvermilia zibrowiusi, R/V "Vityaz" Stn. 6106. A—collar chaetae, B—thoracic chaetae with Apomatus-chaetae, C—thoracic uncini, D—abdominal uncini, E—abdominal chaeta. Scale: A, B—10 μm, C, D— 5 μm, E—2 μm.

FIGURE 6 in New records of Serpulidae (Annelida, Polychaeta) collected by R / V " Vityaz " from bathyal and abyssal depths of the Pacific Ocean

FIGURE 6. Photos of Bathyvermilia zibrowiusi. R/V "Vityaz" Stn. 6106, A—animal in the tube, B—view of an entire worm removed from its tube, C, D—view of the opercula. Scale: A—0.5 mm, B—1.5 mm, C, D—0.5 mm.

FIGURE 2 in New records of Serpulidae (Annelida, Polychaeta) collected by R / V " Vityaz " from bathyal and abyssal depths of the Pacific Ocean

FIGURE 2. Photos of Bathyditrupa hovei, R/V "Vityaz" Stn. 6015, A—ventro-lateral side of the thorax with four uncinigerous segments, stained with methyl blue, B—frontal view of operculum, stained with methyl blue; Stn. 7391, C—general view of animals in the tubes, D—close-up view of the operculum of a worm in the tube; Stn. 4279, E—tube. Scale: A—1 mm, B—2 mm, D—1 mm, C, E—5 mm.

FIGURE 5 in New records of Serpulidae (Annelida, Polychaeta) collected by R / V " Vityaz " from bathyal and abyssal depths of the Pacific Ocean

FIGURE 5. Line drawings of Hyalopomatus jirkovi. A—dorsal and B—lateral views of the holotype, H—operculum of holotype (redrawn from Kupriyanova 1993a). Line drawings of Hyalopomatus sikorskii. C, D—opercula of the specimens from R/ V "Vityaz" Stn. 4131, E—dorsal and F—lateral views of the holotype (redrawn from Kupriyanova 1993a), G—operculum of the holotype (redrawn from Kupriyanova 1993a). Bathyvermilia eliasoni, I—fragment of the tube from R/V "Vityaz" Stn. 3150 (Bailey-Brock). Filogranula stellata, J—fragment of the tube from R/V "Vityaz" Stn. 6348-2 (Bailey-Brock). Scale: A, B—1 mm, C, D—0.2 mm, E, F—0.5 mm, G—0.2 mm, H—0.3 mm, I—1 mm, J—3 mm.

FIGURE 4 in New records of Serpulidae (Annelida, Polychaeta) collected by R / V " Vityaz " from bathyal and abyssal depths of the Pacific Ocean

FIGURE 4. Line drawings of Bathyvermilia challengeri. HURL specimen, BPBM Acc. No. 1983.252; A, B—tubes, C—operculum, D—collar and thoracic membranes, E, F—collar chaetae, G—Apomatus chaeta, H—abdominal chaeta, I—thoracic uncinus in profile view, J—anterior abdominal uncinus in profile view, K—posterior abdominal uncinus in frontal view, Lposterior abdomen with pygidium. Scale: A—0.5 mm, B—0.5 mm, C—0.25 mm, D—0.1 mm, E—2 µm, F—5 µm, G—5 µm, H—2 µm, I—2 µm, J—2 µm, K—2 µm, L—0.15 mm.

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FIGURE 4 in New paedomorphic brachiopods from the abyssal zone of the north-eastern Pacific Ocean

FIGURE 4. Simpliciforma profunda Bitner & Zezina gen. et sp. nov., Clarion-Clipperton Zone, north-eastern Pacific; A, dorsal view of complete specimen, paratype, XI-52-24/2, Stn 27, depth 4850 m; B–D, dorsal valve, inner view and enlargement of the lophophore (C, D), paratype, XI-52-24/3, Stn 185–199, 4580 m; E, F, dorsal view of complete specimen, and enlargement of the umbonal part to show details of the beak, holotype, XI-52-24/1, Stn 217, 4680 m; G–I, dorsal view of complete specimen, and enlargement of the umbonal part, slightly tilted, to show details of the beak (H) and of the shell surface to show distinct growth lines (I), paratype, XI-52-24/4, Stn 185-199, 4580 m.