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Show 1868.] DR. W. BAIRD ON THE GEPHYREA. 83 Sipunculus (Phascolosomum) harveyi, Quatrefages, Hist. Nat. Annel. ii. p. 617, 1865. Hab. Coast of England, Weymouth, Devonshire, Cornwall, &c. B.M. 2. PHASCOLOSOMA FORBESI*. Syrinx forbesii, M'Coy, Ann. & Mag. Nat. Hist. xv.p. 273, t. 16. f. 3, 1845. * Phascolosomum forbesi, Diesing, Syst. Helminth, ii. p. 66, 1851 ; Revis. der Rhyngod. I. c. 764, 1859. Sipmnculus (Phascolosomum) forbesii, Quatrefages, Hist. Nat. Ann. ii. p. 618, 1865. Hab. South Devon, Cornwall (Montagu, Laughrin). B.M. 3. PHASCOLOSOMA TENUICINCTUM. Syrinx tenuicinctus, M'Coy, Ann. & Mag. Nat. Hist. xv. p. 273, t. 16. f. 4, 1845. Phascolosomum tenuicinctum, Diesing, Syst. Helminth, ii. p. 64, 1851 ; Revis. der Rhyngod. I. c. p. 764, 1859. Sipunculus (Phascolosomum) tenuicinctus, Quatrefages, Hist. Nat. Ann. ii. p. 618, 1865. Hab. Falmouth (J. Crunch). B.M. 4. PHASCOLOSOMA OXYURUM. Lumbricus oxyurus, Pallas, Spic. Zoolog. i. fasc. 10. p. 16, 1774 ; Miscell. Zool. p. 147, t. 11. f. 7, 8, 1766. Sipunculus oxyurus, Blainville, Diet. Sc. Nat. xlix. art. Siponcle, p. 312, 1828. Sipunculus, sp., Forbes, Brit. Starfishes, p. 255, 1841. Anoplosomatum pallasii, Diesing, Syst. Helminth, ii. p. 69, 1851 ; Revis. der Rhyngod. 1. c. p. 756, 1859; Quatrefages, Hist. Nat. Annel. ii. p. 631, 1865f. Hab. Hastings; coast of Sussex (Pallas). B.M. 5. PHASCOLOSOMA CAPSIFORME, sp. nov. (Pl. IX. fig. 3.) Corpus cylindrico-fusiforme, leevissimum, lutescens, in medio sacciforme, capsico simile, apice caudali acuminato, granu-loso; proboscis cylindrica, crassiuscula, cirris brevibus, apice clavatis, obsita. Long, corporis 2 une, crass, corporis in medio 10 lin., crass. apie caudal. 2\ lin. In this species the body is cylindrical and fusiform, very smooth- * In this species the extremity of the proboscis is surrounded by from six to eight distinct circles of minute bristles, and the oral cirri are in the form of shoit lacinias. t One of the characters of the genus Anoplosomatum, according to its founder, Grube, and Diesing himself, is the position of the anus in the caudal extremity. Pallas, however, distinctly states that in this species the anus is placed in the anterior portion of the body; and the specimen w e possess from the coast of •Sussex, and which I refer to the oxyurus of Palla?, agrees in this particular with the description given by that author. |