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Show 82 DR. w. BAIRD O N T H E GEPHYREA. [Feb. 13, The body of the animal is cylindrical in form, rather narrow the middle, and densely clathrate, presenting the appearance, to a certain extent, of chain armour. The two extremities are inflated and nearly smooth and shining, the longitudinal ridges being much wider asunder, and the transverse sulci shallow and less apparent 5 the posterior extremity is a little larger than the anterior. The proboscis is only partially excluded, but appears short and cylindrical, and is densely covered with triangular soft murications, the points projecting downwards. The body is of a grey colour, and the two extremities are somewhat iridescent. Hab. Philippine Islands (Mr. Cuming's Collection). B.M. 13. SIPUNCULUS CORALLICOLUS. Sipunculus corallicolus, Pourtales, Proc. Amer. Soc. Adv. Knowl. 1851, p. 41. JLab. Florida, living in hollows in dead coral (Pourtalh). Another species has been shortly described; but, according to Diesing, it requires further investigation. Genus 2. PHASCOLOSOMA. Phascolosoma, Leuckart, Grube, OErsted, O. Schmidt, Keferstein, Costa. Phascolosomum, Diesing. Sipunculus (Phascolosomum), Quatrefages, I. c. Sipunculus, Blainville, Forbes (in part), Grube (in part). Siphunculus, Montagu, Gray. Syrinx (part.), Forbes, M'Coy. Phymosomum (part.), Quatrefages, I. c. CEdematosomum (part.), Quatrefages, I. c. Cryptosomum (part.), Quatrefages, I. c. * Species with the skin smooth. (PHASCOLOSOMUM, Quatrefages.) 1. PHASCOLOSOMA HARVEiif. Syrinx harveii, Forbes, British Starfishes, p. 249. fig., 1841 ; Gosse, Rambles of a Naturalist on the Devonshire Coast, p. 157, 1853. ? Sipunculus nudus, Bosc, Hist. Nat. des Vers, ii. p. 130, 1802 (Syn. Bohadsch exclud.); ? Turton, Brit. Faun. p. 128, 1807. Siphunculus nudus, Martin, Marine Vermes, p. 4,t. 1. f. 2, 1786; Gray, Spic. Zoolog. p. 8, 1828. Phascolosomum harveyi, Diesing, Revis. der Rhyngod I c p 763, 1859. f In this species the extremity of the proboscis is encircled by a close-set series of short bristles, "as if," says M r . Gosse, " it had omitted to shave its beard the day before;" and the oral cirri consist of a "dense tuft of white tentacula." |
