. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. WEST INDIAN DEMOSPONGIAE 145 Myxillidae Acarnus innominatus Gray (Fig. 69) Acarnus innominatus Gray, 1867: 544 Occurrence : Boca Chica (Dominican Republic), depth 2-3 m, 11 April 1964. A very small fragment is available. The sponge was incrusting and insinuating, its colour was reddish to orange-brown. Spicules: 1) Styles straight or slightly, uniformly curved, measuring 340-390 X 9-18 [im. 2) Tylotes straight or sinuous, measuring 220- 280 X [xm. The tyles are spiny. 3) Cladotylotes smooth, with a.
. Annali del Museo civico di storia naturale Giacomo Doria. Natural history. WEST INDIAN DEMOSPONGIAE 145 Myxillidae Acarnus innominatus Gray (Fig. 69) Acarnus innominatus Gray, 1867: 544 Occurrence : Boca Chica (Dominican Republic), depth 2-3 m, 11 April 1964. A very small fragment is available. The sponge was incrusting and insinuating, its colour was reddish to orange-brown. Spicules: 1) Styles straight or slightly, uniformly curved, measuring 340-390 X 9-18 [im. 2) Tylotes straight or sinuous, measuring 220- 280 X [xm. The tyles are spiny. 3) Cladotylotes smooth, with a. Fig. 66 - Spicules of Acarnus innominatus Gray, specimen Scale 100 [Jtm. round base, measuring 230-280 x 9-11 \ 4) Cladotylotes spiny, with a smooth base, measuring 80-130 X (xm. 5) Toxas very varied, from 37 to 550 [xm long, having a thickness not proportioned to length. The longer ones are always thin (about [j,m) and are characterized by the fact that, besides the central flexion, each arm has a double curvature. 6) Isochelas measuring [xm. Myxilla mucronata sp. n. (Fig. 67) Occurrence : Port Royal (Jamaica), wharf pilings, depth 1-6 m, 23 March 1964. Port Royal (Jamaica), submerged ruins, depth 5-10 m, 27 March 1964. Holotype (): msng 47702 : an amorphous mass, soft, mucous, pervaded with algae and Annali Mus. Civ. St. Nat. G. Doria, Vol. LXXXVI 10. 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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