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Fig. 3. Hirsutocrinus duplex n in Hirsutocrinus duplex, a New Genus and Species of Sea Lilies (Crinoidea, Comatulida, Bathycrinidae) from the Western North Pacific

Fig. 3. Hirsutocrinus duplex n. gen. and sp., holotype. A, Isolated plates from the sides of tegmen; B, plates from anal sac; C, plates from tegmen top; D, plates from Brs 2–4; E, plates from Brs 5–8; F, typical (well developed) cover plates from pinnule; G, typical side plates from pinnule.

Fig. 5. Hirsutocrinus duplex n in Hirsutocrinus duplex, a New Genus and Species of Sea Lilies (Crinoidea, Comatulida, Bathycrinidae) from the Western North Pacific

Fig. 5. Hirsutocrinus duplex n. gen. and sp. Scheme, showing position of cover, side and tube feet plates relative to each other in an area of genital expansion of proximal pinnule (oblique view from inner lateral and oral pinnule sides).

Fig. 2. Hirsutocrinus duplex n in Hirsutocrinus duplex, a New Genus and Species of Sea Lilies (Crinoidea, Comatulida, Bathycrinidae) from the Western North Pacific

Fig. 2. Hirsutocrinus duplex n. gen. and sp., holotype. A, Radial ring with arms; B, dististele and radix with fouling; C, IBr1, view from inside; D, IBr2 with knobby process, view from inside; E, detail of knobby process articular surface; F, distal facet of Br6 (muscular synarthry); G, proximal facet of Br3 (muscular synarthry); H, Br2 with knobby process, view from inside; I, Br2 with knobby process, distal view (muscular synarthry); J, Br1 with knobby process, proximal view (asymmetrical muscular synarthry).

Fig. 4. Hirsutocrinus duplex n in Hirsutocrinus duplex, a New Genus and Species of Sea Lilies (Crinoidea, Comatulida, Bathycrinidae) from the Western North Pacific

Fig. 4. Hirsutocrinus duplex n. gen. and sp., holotype. A, Distal facet of hyposynostosial IIBr7 (ligamentary synarthry); B, IIBr4, aboral external view; C, detail of B showing numerous needle-like spines; D, synarthrial facet of columnal 38 (mesistele); E, synarthrial facet of columnal 59 (dististele); F, detail of E showing fulclar ridge axis of columnal 59.

FIGURE 8 in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 8. Primibrachials of crinoids with xenomorphic stalks; viewed from inner side. A: Bathycrinus gracilis, RRS Challenger II, St. 52701#48. B: Monachocrinus recuperatus (Perrier, 1885), RRS Discovery, St. 12930#60. C: Cingocrinus sp., RRS Discovery, St. M5-15773 #17. D: Democrinus conifer (A.H.Clark, 1909), R/V Gerda, Sta.76. Scale: 1 mm. Knobby processes are present on the first and second primibrachials (A), on the first brachials only (B), and on the second brachials only (C, D).

FIGURE 6. Discolocrinus iselini n in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 6. Discolocrinus iselini n. sp. Paratype 6, USNM E00048151, primibrachitaxis. A: First primibrachial viewed from

FIGURE 5. Discolocrinus iselini n in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 5. Discolocrinus iselini n. sp. Holotype, USNM E00048150 (B–D), paratype 1, USNM 1229429 (F), paratype 6, USNM E00048151 (A); arm fragment, USNM 1229429 (E). A: Distal articular facet of IIBr1, non-muscular joint with rudimentary aborsal areola pit (transverse synarthry). B: Proximal articular facet of IIBr9, muscular synarthry. C: Distal articular facet of IIBr10, non-muscular joint (synostosis). D: Proximal articular facet of IIBr10, muscular synarthry with disruption in middle fulcral ridge. E: Pinnule 5 with genital (?) pore, lateral/external oblique view. F: facet of columnal 15 (proxistele) with rudimental fulcral ridge. Scale: 1 mm.

FIGURE 3. Discolocrinus iselini n in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 3. Discolocrinus iselini n. sp.. Holotype, USNM E00048150. A: Plates and other ossicles from Brs and pinnules. B: X-shaped tube feet plates. C: Plates and rod-like ossicles from the tegmen.

FIGURE 4. Discolocrinus iselini n in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 4. Discolocrinus iselini n. sp. Paratype, fragment of the arm USNM 1229429 (A, D–E) and holotype, USNM E00048150 (B, C). A: Fragment of the arm with pinnule 1, pores (?genital pores) visible on pinnules 3–6. B: Proximal part of arm with pinnule 1 on Br14. C: Pn2 from Br20; two thick plates (marked by black). D–F: pinnules1–2 viewed from lateral (D), external (E) and inner (F) sides.

FIGURE 2. Discolocrinus iselini n in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 2. Discolocrinus iselini n. sp. Holotype, USNM E00048150. Aboral cup with proximal arms and proxistele.

FIGURE 1. Discolocrinus iselini n in A new species of Western Atlantic sea lily in the family Bathycrinidae (Echinodermata: Crinoidea), with a discussion of relationships between crinoids with xenomorphic stalks

FIGURE 1. Discolocrinus iselini n. sp. Holotype, USNM E00048150 (A), paratype 6, USNM E00048151 (B–C) and paratype 2, USNM 1229429 (D). A: General view consisting of calyx, proximal arms and proxistele. B–C: RR with proximal arms, A primibrachitaxis and two free arms removed to show the inner knobby processes on IBrs 1–2 (B–C) and the top of the tegmen (B). D: Aboral cup with proximal arms, sides of tegmen torn, inner knobby processes visible. Scale: 10 mm.

FIGURE 6. Bathycrinus longipinnus n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 6. Bathycrinus longipinnus n. sp., St. 3340, RV Vityaz: A—circumoral plates; B—tube feet plates; C—cover plates from proximal arm (Brs 5-7); D—cover plates from pinnules; E–J—facets of columnals of a stalk: E—columnal 4 (proximal proxistele), F–H—columnals 17, 20 and 22 (distal proxistele), I, J—columnals 33 and 50 (mesistele); K—facet of columnal from dististele. Scales: A–D 100 μm; E-K 500 μm.

FIGURE 4. Bathycrinus longipinnus n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 4. Bathycrinus longipinnus n. sp., St. 3340, RV Vityaz: A—RR-ring with proximal arms, holotype; B—arm with Ps 1–2, holotype; C–E—fragments of distal arms,?holotype; F—fragment of stalk of small specimen, IO RAS No. XV-63-7; G– H—proximal stalk fragment (proxistele and mesistele) with BB-ring; I–J—fragment of dististele, 28 columnals, IO RAS Ech00754. Scales: A, F–J 7 mm; B–E 3 mm.

FIGURE 5. Bathycrinus longipinnus n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 5. Bathycrinus longipinnus n. sp., St. 3340, RV Vityaz: A—RR-ring with arms, holotype, IO RAS No. XV-63-7; B, C—IBrs 1–2 with rudimentary knobby processes, view from inside; D—detail of knobby process surface; E—distal view of Br4 with muscular synarthry; F—distal view of IIBr1 with ligamentary synarthry; G—pinnular with sinuate edges; H—radial ossicle with upper radial processes and cuts for calcite plaques, view from outside, Scales: A 5mm; B, C, E–H 500 μm; D 200 μm.

FIGURE 2. Bathycrinus kirilli n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 2. Bathycrinus kirilli n. sp., St. 3494, RV Vityaz: A—general view of the holotype, IO RAS No. XV-63-6, B—fragment of stalk with distal mesistele; C—proximal arm of the holotype, view from side; D–E—another fragment of stalk with distal mesistele, dististele and radix, IO RAS Ech00750. Scale bars: 3 mm.

FIGURE 1 in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 1. Bathycrinus volubilis, St. 86 (A, C–G) and St. 77 (B), RV Sonne, SMF: A—general view; B—aboral cup and proximal arms; C—plates from the sides of upper tegmen; D—cover plates from proximal arm (Brs 4–12); E—cover plates from Brs 14–20; F—cover plates from pinnules; G—pinnular with right edges. Scale bars: A, B 2 mm; C–G 100 μm.

FIGURE 3. Bathycrinus kirilli n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 3. Bathycrinus kirilli n. sp., St. 3494, RV Vityaz: A—radial, B, C—IBrs 1–-2, view from inside; D—IBr2, view from outside; E–F—IIBr1, views from above and outside; G—IIBr5, view from outside; H–K—facets of columnals: H—columnal 2 (proximal proxistele), I—columnal 42 (proximal mesistele), J—26th columnal from radix (distal mesistele); K—3rd columnal from radix (dististele); L—small longitudinal ridges on columnal from proximal mesistele, H/D = 2.0, IO RAS Ech00750. Scales: A–K 300 μm; L 50 μm.

FIGURE 7. Bathycrinus rozhnovi n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 7. Bathycrinus rozhnovi n. sp., St. 7499, RV Vityaz (A–D) and St. 86, RV Sonne (E–J): A—general view, holotype; B—fragments of stalk with radix; C, D –proximal and middle arm, holotype, IO RAS No. XV-63-8; E–J—fragments of stalks from proxistele to dististele, IO RAS Ech00765. Scales: 5 mm.

FIGURE 10 in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 10. Distribution of the hadal species of the genus Bathycrinus in NW Pacific. 1—B. volubilis Mironov, 2000, 2—B. kirilli n. sp., type locality, 3—Bathycrinus sp. cf.. kirilli n. sp., observed by ROV Kaiko (Oji et al. 2009). 4—B. longipinnus n. sp., 5 - Bathycrinus sp. cf. B. longipinnus, 6—B. rozhnovi n. sp.

FIGURE 9. Bathycrinus rozhnovi n in See lilies of the genus Bathycrinus (Echinodermata, Crinoidea: Bathycrinidae) from the North-West Pacific hadal trenches

FIGURE 9. Bathycrinus rozhnovi n. sp., St. 7499, RV Vityaz, paratype 5, IO RAS Ech00763 (A, C–F) and St. 86, Sonne, paratype 18 (B) and fragment of stalk (G, H), SMF: A—circumoral plates, B—cover plates from P9; C–H—facets of columnals: C, D—columnals from proximal proxistele, E—columnal 25 (distal proxistele), F—columnal 31 (proximal mesistele), G—columnal 64 (distal mesistele), H—columnal from dististele. Scale bars: A, B 200 μm; C–H 400 μm.