New species of Desmanthus (Porifera, Demospongiae) with a discussion of its ordinal relationships Author Van Soest, Rob W. M. Institute for Systematics and Ecology, University of Amsterdam, P. O. Box 94766, 1090 GT, Amsterdam (The Netherlands) soest @ bio. uva. nl soest@bio.uva.nl Author Hajdu, Eduardo Nacional, Depto. de Invertebrados, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s / n 20940 - 040, Rio de Janeiro (Brazil) and Centro de Biologia Marinha, Universidade de São Paulo São Sebastião (Brazil) hajdu @ acd. ufrj. br hajdu@acd.ufrj.br text Zoosystema 2000 22 2 299 312 journal article 10.5281/zenodo.5401987 1638-9387 5401987 Lithobubaris leviorum n. sp. ( Fig. 3B, C ) Lithobubaris tenens – Van Soest & Stentoft 1988: 72, fig. 35 (not: L. tenens Vacelet, 1959 ) HOLOTYPE . — Off Paynes Bay . Barbados , 216 m ( ZMA POR5265 ). ETYMOLOGY. — Named after Claude and Pierrette Lévi in recognition of their contributions towards the elucidation of deep-water sponges. DISTRIBUTION. — Barbados , Caribbean, encrusting dead lithistids and corals in deep water. DESCRIPTION Thinly encrusting, round patches on dead corals and lithistid remains, appearing as a “hairy” crust; size several cm 2 . Colour (dry) grey. Skeleton Huge single styles erect on a basal interlocked mass of desmas which overlies the substratum. Desmas arranged loosely, zygosis not well-developed. Style bases fit into the circular outcrops of branches of the desmas. Spicules Desmas with circular side holes ( Fig. 3B, C ), covered with smoothly rounded swellings and tubercles, dimensions: diameter of desma 150- 200 µm, thickness of branches 20-35 µm, diameter of holes 50-60 µm. Styles, robust, dimensions: only up to 1500 µm in length and 48-63 µm in thickness. REMARKS The Barbados specimen differs clearly from Mediterranean L. tenens in the size of the styles which are about half as short in the longest sizes. In view of the geographic separation it is likely the Caribbean material represents a separate species.