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Show 1868.] DR. W. BAIRD ON THE GEPHYREA. 105 p. 3-140. no. 9, 1789 ; Miiller, O. F.,Zool. Dan. Prod. no.2807,1776; Zool. Danicse, torn. iii. p. 27, t. 96. fig. infera, 1789; Fabricius, Faun. Greenland, p. 355. no. 347, 1780 ; Abildgaard, in Schrift. der Gesellsch. naturf. Freunde zu Berlin, torn. ix. p. 133, t. 3. f. 1-3, 1789 ; Rathke in Zool. Dan. iv. pp. 18-19, ? t. 135. f. 2, 1784. ? Priapus humanus, Linnaeus, Amcen. Acad. torn. iv. p. 255, 1754? • Madkomoder, Olafsen & Povelsen, Reyse igiennem Island, Deel ii. p. 1001, t. 10. f. 9 (from an injured specimen), 1772. Priapulus caudatus, Lamarck, An. s. Vert. 1st. edit. torn. iii. p. 77, 1816; 2nd edit. iii. p. 467, 1840; Schweigger, Handb. der Naturg. p. 554, 1820; Fleming, British Animals, p. 491, 1828; Blainville, Diet. Sc. Nat. art. Vers, torn. lvii. p. 554, 1828 ; Forbes, Hist. British Starfishes, p. 256, fig. annexed, 1841 ; M.-Edwards,Cuv. R. An. edit. Crochard, Zooph. t. 21. f. 2; Frey and Leuckart, Beit, zur Kenntn. wirbellos.Thiere (anatom.), pp. 40-45,1847; Sars, Mag. for Naturvidenskab. p. 76, 1850; Diesing, Syst. Helm. torn. ii. pp. 71 & 556, 1851 ; Revis. der Rhyngod. 1. c. p. 769, 1859 ; O. Schmidt, Zeitsch. fiir die gesammten Naturwissensch. Halle, 1854, p. 4, t. 2. f. 4 a-b ; Maitland, Faun. Belgii Septent. torn. i. p. 96, 1851 ; Phillips, Report of British Assoc. 23rd meeting, at Hull, in 1853, Notices and Abstracts, pp. 70-71, 1854; Ehlers, Zeitsch. fur wissenschaft. Zool. torn. xi. p. 209, t. 20. f. 1-13, t. 21. f. 14-22, 1862; Keferstein, Beitr. zur Anat. und Syst. Kennt. der Sipunculid. p. 208, 1865 ; Quatrefages, Hist. Nat. des Annel. torn. ii. part 2. p. 601, 1865. Priapulus, sp., Cuvier, R. An. 2nd edit. torn. iii. p. 242, 1830. Priapula caudata, Guerin, Iconog. R. Anim. Zooph. t. 5. f. 2, copied into Griffith's A<\.n. Kingd. torn. xii. Zooph. t. 12. f. 2, 1834 (both copied from Muller). Priapulus hibernicus, M'Coy, Ann. & Mag. Nat. Hist. 1st ser. torn. xv. p. 272, t. 16. f. 1, 1845; Diesing, Syst. Helm. ii. p. 71, 1851 ; Revis. Rhyng. I. c. p. 770, 1859. Lacazia hibernica, Quatrefages, Hist. Nat. Annel. ii. p. 604, 1865. Hab. Coasts of Greenland, Norway, Great Britain, and shores of German Ocean. B.M. This species, like most of the group to which it belongs, varies remarkably in appearance according as it is observed alive or, as it is generally seen, corrugated and preserved in spirits. Professor Forbes, in his ' History of the British Starfishes,' points this out, and says that when alive it will in a moment change its size from half an inch to as many as four or five inches. Professor Phillips, in his notes upon the animal seen alive, quoted above, says that it becomes very active in the sunshine, " drawing in and exserting the proboscis quickly and even suddenly, opening and again contracting the large caudal plume, bending, extending, and shortening the body without any settled order of changes." This will account for the discrepancy in the various figures given by different authors. The figure given by Muller in his ' Zoologia Danica,' copied into Gue'rin's * Iconography,' and the works of Abildgaard & Forbes would almost be sufficient, were |