. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. WEST INDIAN DEMOSPONGIAE 107 The specimen is a part, 10 cm high and 5 cm wide, of a large, branching, erect sponge. It was noted in Hfe as hard, inelastic, blackish brown, with a mustard colour internally. The fragment, in formalin, is hard, scarcely resilient, pinkish cream. The skeleton is a coarse re- ticulation of strong and hard spiculo-fibres 40-300 [xm in diameter, forming meshes 200-1500 (j-m wide. The fibres are entirely filled by longitudinally and thickly arranged oxeas which are joined by colour- less spon


. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. WEST INDIAN DEMOSPONGIAE 107 The specimen is a part, 10 cm high and 5 cm wide, of a large, branching, erect sponge. It was noted in Hfe as hard, inelastic, blackish brown, with a mustard colour internally. The fragment, in formalin, is hard, scarcely resilient, pinkish cream. The skeleton is a coarse re- ticulation of strong and hard spiculo-fibres 40-300 [xm in diameter, forming meshes 200-1500 (j-m wide. The fibres are entirely filled by longitudinally and thickly arranged oxeas which are joined by colour- less spongin. They are echinated by perpendicular Fig. 31 - Echinodictyum lugubre (D. & M.). Spicules from specimen Scale a: 100 ji-m, scale b: 50 [jim. Spicules: 1) Oxeas curved, measuring 170-520 X fxm. 2) Acanthosubtylostyles measuring 110-140 X 7-9 [xm. They are scar- cely spined and have a blunt point. Agelasidae Agelas dispar Duchassaing & Michelotti (Fig. 32) Agelas dispar Duchassaing & Michelotti, 1864: 76 Occurrence : Duncans (Jamaica), drop-off, depth 35 m, 30 March 1964. , S. Domingo, La Caleta (Dominican Republic), depth 3 m, 3 April 1964. Sosua (Dominican Republic), depth 10-20 m, 19 April 1964. Boca Chica (Dominican Republic), depth 30-40 m, 15 April 1964. Off La Parguera (Puerto Rico), drop-off, depth 25-30 m, 12 May 1964. : fragment of enormous, vasiform specimen. Colour in life brown, interior tan. Oscules 2-5 mm wide, sparse; clusters of smaller ones, about 1 mm wide; irregular invaginations. : fragment of large specimen. Colour in life light brown, interior tan. Oscules 2-4 mm wide, sparse; smaller ones in groups, mm wide; short invaginations contort, 1-2 mm Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may


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