42 HOLOTHURIOIDEA. 



1. Thyone fusus. (Hate Y. fig. 1 & Plate VII. fig. 3.) 



Holothuria fusus, O.F. Mull. Zool. Dan. i. (1788) p. 11, pi. x. figs. 5 



& ; Gmel. Syst. Nat. xiii. (1780) p. 3141 ; Lamk. An. s. Vert. 



iii. (1816) v. 74 j Rathhe, Nov. Act. xx. (1843) p. 140, pi. vi. 



figs. 24 & 25. 

 Holothuria penicillus, 0. F. Mull. Zool. Ban. i. (1788) p. 10, pi. x. 



fig. 4. 

 Holothuria papillosa, Gmel. Sijst. Nat. xiii. (1788) p. 3140; O. F. 



Mull. Zool. Dan. iii. (1780) p. 47, pi. cviii. fig. 5. 

 Miilleria papillosa, Johnston, Loudon's Mag. Nat. Hist. vii. (1834) 



p. 584, fig. 66. 

 Thyone fusus, Ac/. Mem. Soc. Neuchdt. i. (1835) p. 181 ; Koren, Nyt 



Mar/, iv. (1845) p. 203, pi. i. ; Diiben fy Koren, Vet.-Akad. Hdlg. 



1844 (1846), p. 308, pi. v. figs. 42-48, & pi. xi. fig. 52; Gray, 



Brit. Bad. (1848) p. 7 ; Sars, Nyt May. x. (1859) p. 79, pi. ii. 



figs. 49-51 ; id. Nortj. Ech. (1861) p. Ill ; Semper, Hoi. Phil. 



(1868) p. 273; Norman, Hep. Brit. Assoc. 1868 (1869), p. 317 ; 



Hodgs. Trans. Northumb. ty Durham, iv. (1872) p. 146, pi. ii. 



figs. 19-40; Marenz. Abh. z.-b. Ges. Wien, xxiv.' (1874) p. 312; 



Ludw. Mitth. zool. Stat. Neap. i. (1879) p. 567; Graefe, Arb. 



Inst. Wien, iii. (1881) p. 343; Barrois, Cat. Crust. (1882) p. 53; 



Lamyert, Seewalz. (1885) p. 161 ; Thcel, Chall. Rep. Hoi. (1886) 



p. 134 ; Bell, Proc. B. Irish Ac. iv. (1886) p. 620 ; Herouard, 



Arch. Zool. vii. (1889) p. 689. 

 Thyone papillosa, Forbes, Brit. Star/. (1841) p. 233 ; Thompson, Nat. 



Hist. Irel. iv. (1856) p. 444. 

 Anaperus fusus, Troschel, Arch. f. Nat. 1846, p. 62. 

 Thyone floccosa [n. n.], Norman, Rep. Brit. Assoc. 1863 (1864), Trans. 



p. 10(5 (teste N.). 

 Thyonidium pellucidum, Barrois, Cat. Crust. (1882) p. 49. 

 Semperia barroisi, Lampert, Seewalzen, (1885) p. 153 ; Thcel, Chall. 



Bep. Hoi. (1886) p. 268. 

 ? Thyone subvillosa, Herouard, Arch. Zool. vii. (1889) p. 687. 



Body irregularly fusiform, not curved, and with no tail-like end. 

 Richly covered with podia. 



Deposits ordinarily with four holes, occasionally also with smaller 

 outer holes, irregularly oval in form ; spire ends in small spines. 



Whitish in colour ; about a couple of inches long, and one wide. 



Distribution. Eastern side of North Atlantic to Lofoten ; Medi- 

 terranean. 10 to 80 fms. 



a. Loch Etive, 15-20 fms. J. Murray, Esq. 



b-d. Between Canna and Rum, 80-100 fms. J. Murray, Esq. 



e. Weymouth. 



2. Thyone raphanus. (Plate V. fig. 2 & Plate VIII. fig. 3.) 



Thyone raphanus, Dub. # Kor. Vet.-Akad. Hdlg. 1844 (1846), pp. 219 

 & 311, pi. v. figs. 49-55, pi. xi. figs. 58 & 59 ; Thompson, Nat. Hist. 

 Irel. iv. (1856) p. 444; Kinahan, Nat. Hist. Beo. (1859) p. 369; 

 Sars, Norg. Ech. (1861) p. 112; Norman, Pep. Brit. Assoc. 1868 

 ( L869), p. 317 ; Semper, Hoi. Phil. (1868) p. 273; non Marenz. 

 Verh. z.-b. Ges. Wien, xxvii. (1877) p. 118 (teste Marion, Ann.. 

 Sci. Nat. viii. (1879) p. 40) ; Hodge, Tr. Nat. Hist. Soc. North, iv. 



