. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. SPONGES FROM EAST AFRICA 315 Fig. 48 - Spicules of Xestospongia informis sp. n. Scale: 100 | cy is firm but friable. The ectosome is distinct and easily separable. It consists of a tangential reticulation of intercrossing single spicules, with some irregular tracts one to four spicules thick. The choanosomal skeleton is a reticulation of plurispicular tracts 50-100 |im thick forming irregular meshes 380-530 firn wide. This is rather confused, as the spicules are irregularly arranged in the tracts. The spicules are
. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. SPONGES FROM EAST AFRICA 315 Fig. 48 - Spicules of Xestospongia informis sp. n. Scale: 100 | cy is firm but friable. The ectosome is distinct and easily separable. It consists of a tangential reticulation of intercrossing single spicules, with some irregular tracts one to four spicules thick. The choanosomal skeleton is a reticulation of plurispicular tracts 50-100 |im thick forming irregular meshes 380-530 firn wide. This is rather confused, as the spicules are irregularly arranged in the tracts. The spicules are strongyles measuring 345-390 x 16-23 |im. Xestospongia e lavata (Fig. 49, 50) Occurrence: North Kenva Banks, depth 130 m, dredge, 5 December 1971. Holotype: msng 48321. The specimen is claviform, 7 cm high, 3 cm in maximum diameter. In the dry state, it is incompressible, brittle. The ectosome is easily Fig. 49 - Spicules of Xestospongia clavata sp. n. Scale: 100 Fig. 50 - Xestospongia clavata sp. n., the holotype (dry). Scale: 2 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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