1868.] DR. W. BAIRD ON THE GEPHYREA. 105 



p. 3140. no. 9, 1789 ; Miiller, O. F.,Zool. Dan. Prod. no. 2807, 177C; 

 Zool. Danicse, torn. iii. p. 27, t. 96. fig. infera, 1/89; 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 ; Kathke in Zool. Dan. iv. pp. 18-19, ? t. 135. f. 2, 1784. 



1 Priapus humamis, 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. 



Priapvlus 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, tom. Ivii. p. 554, 1828 ; Forbes, 

 Hist. British Starfishes, p. 256, fig. annexed, 1841 ; M.-Edwards,CuT. 

 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, 

 toni. ii. pp. 71 & 556, 1851 ; Revis. der Rhyngod. I. e. p. 769, 1859 ; 

 O. Schmidt, Zeitsch. fiir die gesammteu Naturwissensch. Halle, 

 1854, p. 4, t. 2. f. 4 a-b ; Maitland, Faun. Belgii Septent. tom. i. 

 p. 96, 1851 ; PhiUips, Report of British Assoc. 23rd meeting, 

 at Hull, in 1853, Notices and Abstracts, pp. 70-71, 1854; Ehlers, 

 Zeitsch. fiir wissenschaft. Zool. tom. 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. 

 tom. ii. part 2. p. 601, 1865. 



Priapulus, sp., Cuvier, R. An. 2nd edit. tom. iii. p. 242, 1830. 

 Priapula candata, Guerin, Iconog. R. Anim. Zooph. t. 5. f. 2, 

 copied into Griffith's An. Kingd. tom. xii, Zooph. t. 12. f. 2, 1834 

 (both copied from jNIiiller). 



Priopulns hibernicus, M'Coy, Ann. & Mag. Nat. Hist. 1st scr. 

 tom. 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. 

 Hub. 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 

 Miiller in his ' Zoologia Danica,' copied into Gue'rin's ' Iconography,' 

 and the works of Abildgaard & Forbes would almost be sufficient, were 



