Clathria (Thalysias) curacaoensis (Arndt, 1927) Figures 93 a–k Clathria copiosa var. curacaoensis Arndt, 1927: 148, pl. I fig. 3, text-fig. 9. Aulospongus schoenus De Laubenfels, 1936: 100, pl. 13 fig. 4. Rhaphidophlus schoenus; Van Soest 1984: 112, p. VIII figs1–4, text-fig. 44. Clathria (Thalysias) curacaoensis; Zea et al. 2014: 407, figs 4–6, pl. I figs C–E, with further synonyms. Material examined. RMNH Por. 9944, Guyana, ‘Luymes’ Guyana Shelf Expedition, station 63, 7.5833°N 57.0667°W, depth 71 m, sandy bottom, 31 August 1970. Description. (Fig. 93 a) Encrusting on calcareous debris, with optically smooth, but microconulose surface. Color in alcohol red-brown. No apparent oscules. Lateral size about 3 x 1.5 cm, thickness 0.5–2 mm. Consistency soft. Skeleton. (Fig. 93 b) The choanosomal skeleton consists of spongin-enforced plumose spicule tracts, 50–100 µm in diameter, cored by 4–10 styles. Tracts sparingly echinated by acanthostyles. Near the surface the tracts fan out to form bouquets consting of ... : Published as part of Van, Rob W. M., 2017, Sponges of the Guyana Shelf, pp. 1-225 in Zootaxa 1 on page 150, DOI: 10.5281/zenodo.272951 ...