Brittle Stars And Basket Stars

Figure 14.Some ophiurans in their natural habitat. A Ophiomyxa flaccida B Ophiolepis impressa C Ophiothrix angulata D Ophiocoma echinata E Ophioderma cinerea F Ophioderma appressa. Photos by Thelma L. P. Dias.

Figure 3.Ophioderma peruana sp. n., holotype (CZA-363). A basal portion of the arms with fragmented dorsal arm plates B dorsal arm plates fragmented in several pieces C ventral arm plates and tentacle scales D lateral view of the arm spines.

Figure 5.Ophiocoma aethiops. A dorsal view. Scale bar = 15 mm B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 5 mm. Ophiocoma alexandri G dorsal view H dorsal view of the arm I ventral view of the arm. Scale bar = 15 mm J dorsal view of the disk K ventral view of the disk. L jaw. Scale bar = 5 mm.

Ophiopholis aculeata, aboral view (24-26); Ophiopholis aculeata, oral view (27); Ophiura brevispina, aboral view (28,29); Ophiura brevispina view, shows regenerating arms (30).

Astrophyton.

Figure 4.Squamophis albozosteres sp. n., holotype (MV F162657). A aboral disc and basal portion of the arms B periphery of the disc and basal portion of the arm C aboral central disc D oral disc E oral central disc F jaws G oral periphery of the disc H lateral interradius of the disc. Abbreviations: GS - genital slit; O - oral papillae; T - teeth; Ten - Tentacles.

Figure 7.Species of the family Amphiuridae. Ophiophragmus brachyactis A dorsal view, detail of the fence of papillae B ventral view C jaw D dorsal view of the arms E ventral view of the arms. Ophiostigma isocanthum F dorsal view G ventral view H detail of the radial shields I jaw J dorsal view of the arms L ventral view of the arms. Scale bar = 1 mm.

Figure 4.Ophioderma peruana sp. n.non-type preserved material (alcohol) showing different colors variations. A specimen in situ B CZA-394 (14 mm DD) radial shields naked C CZA-392 (28 mm DD) radial shields naked D CZA-390 (35 mm DD) radial shields covered by disc granules.

Figure 6.Ophioderma panamensis. A dorsal view B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 5 mm. Ophioderma teres juvenile G dorsal view. Scale bar = 5 mm H dorsal view of the arm (dp = divided dorsal arm plates) I ventral view of the arm J dorsal view of the disk K ventral view of the disk L jaw. Scale bar = 1 mm.

Ophiopholis aculeata.

Figure 5.Squamophis albozosteres sp. n., holotype (MV F162657). A, B aboral basal portion of the arm C oral basal portion of the arm D aboral middle portion of the arm, each arrow head indicates a row of white ossicles E oral middle portion of the arm F lateral middle portion of the arm, each arrow head indicates a row of white ossicles G oral distal portion of the arm H lateral distal portion of the arm. Abbreviations: - AS arm spine; LAP - lateral arm plate; Ten - tentacles.

Figure 7.Species of the family Amphiuridae. Ophiophragmus brachyactis A dorsal view, detail of the fence of papillae B ventral view C jaw D dorsal view of the arms E ventral view of the arms. Ophiostigma isocanthum F dorsal view G ventral view H detail of the radial shields I jaw J dorsal view of the arms L ventral view of the arms. Scale bar = 1 mm.

Figure 1.Collecting sites of Ophioderma peruana sp. n. A complete map of America B1 Hooker Reef, Punta Sal 2 Quebrada Verde, El Ñuro 3 Lobos de Afuera Island, Peru.

Figure 6.Ophioderma panamensis. A dorsal view B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 5 mm. Ophioderma teres juvenile G dorsal view. Scale bar = 5 mm H dorsal view of the arm (dp = divided dorsal arm plates) I ventral view of the arm J dorsal view of the disk K ventral view of the disk L jaw. Scale bar = 1 mm.

Figure 6. A–K Squamophis albozosteres sp. n., paratype(MV F162658). SEM photographs of internal ossicles. A, B polygonal plate-shaped epidermal ossicles at the aboral periphery of the disc, external (A) and lateral (B) views C, D domed plate-shaped epidermal ossicles at the periphery of the disc, external (C) and lateral (D) views E, F domed plate-shaped epidermal ossicles on the aboral middle portion of the arm, external (E) and lateral (F) views G, H granule-shaped epidermal ossicles on the oral middle portion of the arm, external (G) and lateral (H) views I–K arm spines from basal (I), middle (J) and distal (K) portion of the arm. Arrows indicate the orientation (B, D, F, H): ext - external side; int - internal side.

Figure 2.Species of the families Ophiomyxidae (A–E) and Ophiotrichidae (F–J). Ophiomyxa flaccida. A dorsal view, in detail the marginal interradius with a row of large scales B ventral view C jaw D dorsal view of the arm E ventral view of the arm. Ophiothrix (Ophiothrix) angulata F dorsal view, in detail the radial shields G ventral view H jaw I dorsal view of the arms J ventral view of the arms. Scale bar = 1 mm.

Figure 7.Ophioderma sp. 1. A dorsal view B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw (ad = adoral shields). Scale bar = 5 mm. Ophiolepis pacifica G dorsal view. Scale bar = 5 mm H dorsal view of the arm (adp = accessory dorsal arm plates) I ventral view of the arm J dorsal view of the disk K ventral view of the disk L jaw. Scale bar = 1 mm.

Figure 7.Squamophis albozosteres sp. n., paratype(MV F162658). SEM photographs of internal ossicles. A lateral arm plate from middle portion of the arm B, C vertebrae from middle (B) and distal (C) portion of the arm, oral views. Abbreviations: MO - muscle opening; NO - nerve opening.

Figure 14.Some ophiurans in their natural habitat. A Ophiomyxa flaccida B Ophiolepis impressa C Ophiothrix angulata D Ophiocoma echinata E Ophioderma cinerea F Ophioderma appressa. Photos by Thelma L. P. Dias.

Figure 1.Ophiocnida hispida. A dorsal view. Scale bar = 5 mm B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 1 mm. Ophiophragmus papillatus G dorsal view. Scale bar = 5 mm H dorsal view of the arm I ventral view of the arm J dorsal view of the disk (p = papillae around the margin of the disk) K ventral view of the disk L jaw. Scale bar = 1 mm.

Figure 8.Species of the family Ophiactidae. Ophiactis quinqueradia A dorsal view B ventral view C jaw D dorsal view of the arms E ventral view of the arms F detail of the radial shields. Ophiactis savignyi G dorsal view, detail of the radial shields H ventral view I jaw J dorsal view of the arms L ventral view of the arms. Scale bar = 1 mm.

Figure 2.Ophiothrix (Ophiothrix) rudis. A dorsal view. Scale bar = 5 mm B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 1 mm. Ophiothrix (Ophiothrix) spiculata G dorsal view. Scale bar = 5 mm H dorsal view of the arm I ventral view of the arm J dorsal view of the disk K ventral view of the disk L jaw. Scale bar = 1 mm.

Figure 8.Species of the family Ophiactidae. Ophiactis quinqueradia A dorsal view B ventral view C jaw D dorsal view of the arms E ventral view of the arms F detail of the radial shields. Ophiactis savignyi G dorsal view, detail of the radial shields H ventral view I jaw J dorsal view of the arms L ventral view of the arms. Scale bar = 1 mm.

Figure 2.Ophiothrix (Ophiothrix) rudis. A dorsal view. Scale bar = 5 mm B dorsal view of the arm C ventral view of the arm D dorsal view of the disk E ventral view of the disk F jaw. Scale bar = 1 mm. Ophiothrix (Ophiothrix) spiculata G dorsal view. Scale bar = 5 mm H dorsal view of the arm I ventral view of the arm J dorsal view of the disk K ventral view of the disk L jaw. Scale bar = 1 mm.