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15 results for “Hamacanthidae”
FIGURE 1 in Hamacantha (Hamacantha) boomerang sp. nov. from deep-sea coral mounds at Campos Basin, SW Atlantic, and redescription of H. (H.) schmidtii (Carter, 1882) (Hamacanthidae, Poecilosclerida, Demospongiae)
FIGURE 1. Collecting locality, external morphology and spicules of Hamacantha (Hamacantha) boomerang sp. nov. (holotype, MNRJ 14339). A, portion of the South American continent showing location of Campos Basin. B, collecting locality at Campos Basin. C, external morphology of the holotype (arrows) encrusting a fragment of a dead coral, Solenosmilia variabilis. D, oxeas. E, large diancistras. F, intermediate diancistras. G, smaller diancistras. H, accolada toxas. I, smaller diancistras in greater detail. Scales: B, 100 km; C, 1 cm; D, 100 µm; E–H, 20 µm; I, 5 µm.
FIGURE 2 in Hamacantha (Hamacantha) boomerang sp. nov. from deep-sea coral mounds at Campos Basin, SW Atlantic, and redescription of H. (H.) schmidtii (Carter, 1882) (Hamacanthidae, Poecilosclerida, Demospongiae)
FIGURE 2. Holotype of Hamacantha (H.) schmidtii (Carter, 1882; Desmacella johnsoni (Bowerbank, 1864) sensu Schmidt, 1870), BMNH 1870.5.3.28. A, Schmidt's microscopic preparation analysed in the early 1990's. B, Larger diancistras forming a loose rosette. B, Larger diancistras erect on a tract of oxeas. C, Larger diancistra. D, Aberrant larger diancistra with a smaller diancistra lying on top of its lower extremity. E, intermediate diancistras. F–G, intermediate and smaller diancistras. Scales: C– D, 100 µm.
FIGURE 3 in Two new Hamacantha (Vomerula) from the Rio Grande Rise (SW Atlantic) (Hamacanthidae, Porifera)
FIGURE 3. Holotype of Hamacantha (Ƒ.) klausruetzleri sp. nov. (MNRJ 17983). A) external morphology; B) Transversal section of skeleton; C) Styles; D) Strongyles; E) Larger diancistras; F) Smaller diancistras; G) Sigmas I and II; H) Sigmas I; I) Sigmas II. Scales: A) 5 mm; B) 100 µm; C–D) 50 µm; E, G) 20 µm; F–I) 10 µm.
FIGURE 2 in Two new Hamacantha (Vomerula) from the Rio Grande Rise (SW Atlantic) (Hamacanthidae, Porifera)
FIGURE 2. Holotype of Hamacantha (Ƒ.) jeanvaceleti sp. nov. (MNRJ 21424). A) external morphology; B) Transversal section skeleton; C) Styles; D) Larger diancistras E) Smaller diancistras. Scales: A) 5 mm; B–D) 50 µm; E) 10 µm.
FIGURE 1 in Two new Hamacantha (Vomerula) from the Rio Grande Rise (SW Atlantic) (Hamacanthidae, Porifera)
FIGURE 1. Collecting area, Rio Grande Rise, SW Atlantic AREA. Bathymetric legend: light blue, 1000 m depth; blue,> 200 m depth; dark blue,> 2000 m depth.
FIGURE 1 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 1. Location of sampling sites. Open star indicates sampling site of Hamacantha (Vomerula) mamoi sp. nov., and solid star indicates that of Hamacantha (Vomerula) umisashii sp. nov..
FIGURE 2 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 2. Hamacantha (Vomerula) mamoi sp. nov., holotype (NSMT-Po-2438). A, external morphology. B, skeletal arrange- ment of surface of ectosome. C, vertical section shows bundles of styles. D, diancistras I attach on bundle of styles. Scale bars: A, 5 mm; B, C, 200 µm; D, 100 µm.
FIGURE 5 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 5. Spicules of Hamacantha (Vomerula) umisachii sp. nov., holotype (NSMT-Po-2488). A, styles. B, magnified view of both extremities of mycalosyle, left: blunt end or base, right: sharply pointed end or apex. C, diancistras I. D, diancistras II (cyrtancistra-like diancistras). E, magnified view of tip of diancistra II, note the hook-like structure. F, sigmas. Scale bars: A, 100 µm; B, F, 10 µm; C, 50 µm; D, 20 µm; E, 3 µm.
FIGURE 4 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 4. Hamacantha (Vomerula) umisachii sp. nov., holotype (NSMT-Po-2488). A, external morphology. B, skeletal arrangement of surface of ectosome. Note darker parts are bouquets of upward styles (b). C, other magnified view of surface of ectosome. Sheet of styles gather to bouquets (b). D, diancistras attach on bundle of styles. Scale bars: A, 2 mm; B, C, 100 µm; D, 50 µm.
FIGURE 3 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 3. Spicules of Hamacantha (Vomerula) mamoi sp. nov., holotype (NSMT-Po-2438). A, styles. B, magnified view of both extremities of mycalosyle, left: blunt end or base, right: sharply pointed end or apex. C, diancistras I (larger diancistras). D, diancistras II (smaller diancistras). E, sigmas. Scale bars: A, 100 µm; B, E, 20 µm; C, 50 µm; D, 10 µm.
FIGURE 5 in New Hamacantha from Peru and resurrection of Zygherpe as subgenus (Demospongiae, Poecilosclerida, Hamacanthidae)
FIGURE 5. Hamacantha (Zygherpe) hyaloderma (de Laubenfels, 1932). Holotype (USNM 22060), on top (A–V). A–D, tylostyles. E–J, bases of tylostyles. K, apex of tylostyle. L–N, diancistras. O–Q, sigmas I (larger). R, smooth end of sigma I. S–U, sigmas II (smaller). V, smooth end of sigmas II. Canadian specimen, below (A–T). A–D, tylostyles. E–J, bases of tylostyles. K, apex of tylostyle. L–N, diancistras. O–P, sigmas I (larger). Q, smooth end of sigma I. R–S, sigmas II (smaller). T, smooth end of sigmas II.
FIGURE 3 in New Hamacantha from Peru and resurrection of Zygherpe as subgenus (Demospongiae, Poecilosclerida, Hamacanthidae)
FIGURE 3. Hamacantha (Zygherpe) desmacelloides sp. nov. A, ectosomal architecture in tangential view. B–C, choanosomal architecture in transverse view. D, diancistras in rosettes. E–I, tylostyles. J–O, bases of tylostyles. P, apex of tylostyle. Q–S, diancistras. T–U, sigmas I (larger). V–V', terminal spination on sigmas I. W–X, sigmas II (smaller). Y–Y', terminal spination on sigmas II. (MNRJ 11342 = K, Q, V–V', X–Y'. MNRJ 12167 = F, H, L–M, O, R and W. MNRJ 13661 = E, G, J, T–U. MNRJ 13699 = I, N, P and S).
FIGURE 4 in New Hamacantha from Peru and resurrection of Zygherpe as subgenus (Demospongiae, Poecilosclerida, Hamacanthidae)
FIGURE 4. Hamacantha (Zygherpe) hyaloderma (de Laubenfels, 1932), Peruvian specimens. A, ectosomal architecture in tangential view. B, choanosomal architecture in transverse view. C–F, tylostyles. G–L, bases of tylostyles. M, apex of tylostyle. N–Q, diancistras. R–T, sigmas I (larger). U, smooth end of sigma I. V–Y, sigmas II (smaller). Z, smooth end of sigmas II. (MNRJ 12146 = D–H, J, K–M, R–Z. MNRJ 12162 = C, I, N–Q).
FIGURE 2 in New Hamacantha from Peru and resurrection of Zygherpe as subgenus (Demospongiae, Poecilosclerida, Hamacanthidae)
FIGURE 2. Hamacantha spp. from Peru, in situ. A, H. (Zygherpe) desmacelloides sp. nov., holotype. B, H. (Z.) hyaloderma (de Laubenfels, 1932), MNRJ 12160.
FIGURE 1 in New Hamacantha from Peru and resurrection of Zygherpe as subgenus (Demospongiae, Poecilosclerida, Hamacanthidae)
FIGURE 1. Schematic representation of the Peruvian coast, showing collecting localities in detail.
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