. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. WEST INDIAN DEMOSPONGIAE 67 TETRACTINOMORPHA ASTROPHORIDA Stellettidae Stellettinopsis dominicana (Fig. 1,2) Occurrence : Boca Chica (Dominican Republic), depth 7-8 m, 12 April 1964. Boca de Yuma (Dominican Republic), depth 15-25 m, 24 April 1964. Holotype (): msng 47679 is an irregularly conical fragment measuring 6 X 6 X cm. In life the consistency of the sponge was firm, incompressible, the sur- face was encrusted by a red Microciona, the interior colour was cream, the o
. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. WEST INDIAN DEMOSPONGIAE 67 TETRACTINOMORPHA ASTROPHORIDA Stellettidae Stellettinopsis dominicana (Fig. 1,2) Occurrence : Boca Chica (Dominican Republic), depth 7-8 m, 12 April 1964. Boca de Yuma (Dominican Republic), depth 15-25 m, 24 April 1964. Holotype (): msng 47679 is an irregularly conical fragment measuring 6 X 6 X cm. In life the consistency of the sponge was firm, incompressible, the sur- face was encrusted by a red Microciona, the interior colour was cream, the oscules were blue-black, 8-10 mm in diameter. There is no distinct cortex; the choanosome is densely packed by oxeas in confused tracts which, at the surface, become perpendicularly arranged, forming a dense microscopical Fig. 1 - Stellettinopsis dominicana sp. n., the holotype. Scale: 2 cm. Spicules: 1) Oxeas stout, regularly curved, often modified to styles, rarely to strongyles, measuring 940-1550 X 40-73 [xm. 2) Ortho- to dichotriaenes extremely rare, with a reduced and irregular cladome measuring 100-150 jxm, rhabdome markedly conical, about 650-850 X. 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 not perfectly resemble the original Museo civico di storia naturale Giacomo Doria (Genoa, Italy). Genova : Stab. tipo-litografico P. Pellas Fu L.
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