. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. MEDITERRANEAN DEMOSPONGIAE 489 have been reported for this species by Topsent (1928: 149) and by KoLTUN (1966: 76), but in both cases these spicules were not fusiform. Polymastia sola sp. n. Occurrence. Off Calvi, depth 123-147 m, detrital, dredge, 15 Julv 1969 Holotype. msng 47164. Description. (Figg. 19, 20) The specimen consists of a small cushion-shaped mass about 10 mm wide, bearing a single papilla, flattened, closed, 6 mm long. There is a distinct cortex, about 200 [im thick. The surface is micro
. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. MEDITERRANEAN DEMOSPONGIAE 489 have been reported for this species by Topsent (1928: 149) and by KoLTUN (1966: 76), but in both cases these spicules were not fusiform. Polymastia sola sp. n. Occurrence. Off Calvi, depth 123-147 m, detrital, dredge, 15 Julv 1969 Holotype. msng 47164. Description. (Figg. 19, 20) The specimen consists of a small cushion-shaped mass about 10 mm wide, bearing a single papilla, flattened, closed, 6 mm long. There is a distinct cortex, about 200 [im thick. The surface is microscopically, very densely hispidated. Spicules. 1) Subtylostyles with tyle reduced or even absent, straight, fusiform, measuring 800-1000 x 12-18 [im. 2) Subtylostyles straight or gently curved, fusiform, size 400-560 x 8-11 (jim. 3) Tylo- styles curved near the base, with well-formed head, fusiform, size 150-230 X 5-8 Fig. 20 - Polymastia sola sp. n., the holotype (dryj. Scale: 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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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
