. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. 312 C;. petrosida Petrosiidae Petrosia seychellensis Dendy (Fig. 43) Petrosia seychellensis Dendy, 1921: 35 Occurrence: Mombasa, Shelly Beach, depth 22 m, diver, 15 August 1974. Shimoni (04"43'S - 39"23'E), depth 16 m, dredge, 25 February 1974. The spicules are 1) Strongyles 240-390 x 16-20 ^im (mostly 370-380 urn). 2) Oxeas 240-370 x 8-10 Fig. 43 - Spicules of Petrosia seychellensis Dendy. Scale: 100 urn. Petrosia nigricans Lindgren (Fig. 44) Petrosia nigrica
. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. 312 C;. petrosida Petrosiidae Petrosia seychellensis Dendy (Fig. 43) Petrosia seychellensis Dendy, 1921: 35 Occurrence: Mombasa, Shelly Beach, depth 22 m, diver, 15 August 1974. Shimoni (04"43'S - 39"23'E), depth 16 m, dredge, 25 February 1974. The spicules are 1) Strongyles 240-390 x 16-20 ^im (mostly 370-380 urn). 2) Oxeas 240-370 x 8-10 Fig. 43 - Spicules of Petrosia seychellensis Dendy. Scale: 100 urn. Petrosia nigricans Lindgren (Fig. 44) Petrosia nigricans Lindgren, 1897: 480 Occurrence: North Kenya Banks (02°42'S - 40°39'E), depth 70 m, dredge, 17 January 1973. The spicules are oxeas measuring 55-280 x |im, points slightly mucronate. Their characteristic shape is as figured by Thiele (1903, PI. XXVIII, Fig. 3) for his Petrosia cancellata, regarded as a synonym of P. 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
