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Show 1868.] DR. W. BAIRD ON THE GEPHYREA. 87 Turton, Brit. Faun. p. 74, 1807; Fleming, Brit. Animals, p. 491, 1825 ; Gray, Spic. Zool. p. 8, 1828. Sipunculus (Cryptosomum) strombi, Quatrefages, Hist. Nat. Ann ii. p. 628, 1865. Phascolosomum strombi, Diesing, Syst. Helminth, ii. p. 65, 1851. Phascolosoma strombi, Keferstein, Beitr. z. A^nat. Sipunc / c p. 202, 1865. Siphunculus dentalii, Gray, Spic. Zool. p. 8, 1828 ; Johnston, Loudon's Mag. N. Hist. vi. p. 233, f. 25, 1833. Phascolosomum dentalii, Diesing, Syst. Helm. ii. p. 64, 1851. 1 Sipunculus (Cryptosomum) dentalii, Quatrefages, Hist. Nat. Annel. ii. p. 627, 1865. Sipunculus bernhardus, Forbes, Brit. Starfish, p. 251, f., 1841; Girard, Stimpson, Contrib. Smithson. 1853, p. 28. Phascolosoma bernhardus, Pourtales, Proc. Amer. Ass. Adv. Sc. Meeting v. 1851, p. 41 ; Diesing, Revis. d. Rhyngod. I. c. p. 759, 1859. Sipunculus (Phascolosoma) concharum, (Ersted, De Regionib. Marin, p. 80, 1844; Kroyer's Nat. Tidssk. 1844-45, p. 419; Sars, Magaz. f. Naturvidensk. 1850, p. 77. Var. capitata. Sipunculus capitatus, Rathke, Nov. Act. Nat. Cur. xx. part i. pp. 143-147, t. 6. f. 20-23, 1843; O. Schmidt, Zeitsch. f. d. gesammt. Naturw. 1854, pt. 3. p. 2, t. 1. f. 2. Phascolosomum capitatum, Diesing, Syst. Helm. ii. pp. 65 and 555, 1851. Phascolosomum bernhardus, var. capitata, Diesing, Revis. d. Rhyngod. I. c. p. 760, 1859. Hab. Coasts of England, Scotland, &e, inhabiting Dentalium- and Stromb-shells, &c. a. P. dentalii, Cornwall (Laughrin), Devonshire (J. Crunch). B.M. b. P. strombus, Devonshire (Montagu), Aberystwith (Henslow). B.M. c. P. dentalii, var. capitata, Yorkshire (7V. Clift, Esq.). B.M. 2. PHASCOLOSOMA CAEMENTARIUM. Sipunculus (Cryptosomum) ceementarius, Quatrefages, Hist. Nat. Amide's, ii. p. 628, 1865. Hab. North America, in Dentalium-shelh (M. Richard fide Quatrefages). f Species with skin more or less densely covered with warts or granules. (PHYMOSOMUM, Quatrefages.) 1. PHASCOLOSOMA TUBERCULATUM. Sipunculus tuberculatus, Blainville, Diet. Sc. Nat. art. Siponcle, Atlas, pl. 33. f. 5, 1827. |