A MONOGRAPH OF THE EXISTING CRINOIDS. 163 



EUDIOCRINUS INDIVISUS (Semper) 



Plate 11, Figure 42 



Ophiocrinus indivisus Semper, Archiv fur Naturg., 1868, vol. 1, p. 68 (description; Pandanon, 30 

 fathoms). — A. H. Clark, Proc. U.S. Nat. Mus., vol.32, 1907, p. 573 (type of Eudiocrinus) , p. 

 574 (first reference and type locality) ; vol. 34, 1908, p. 271 (history; original description quoted) ; 

 Crinoids of the Indian Ocean, 1912, p. 3 (history). 



Eudiocrinus indivisus P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 1882, p. 495. — Perrier, 

 Compt. Rend. Acad. Sci., vol. 96, 1883, p. 726; Ann. Mag. Nat. Hist., ser. 5, vol. 11, 1883, p. 

 294 (comparison with E. [Pentametrocrinus] allanticus). — P. H. Carpenter, Challenger Re- 

 ports, Zoology, vol. 11, pt. 32, 1884, pp. 47, 48, 58, 127, 137 (discussion). — Perrier, M6m- 

 oire eur l'organisation et le developpement de la comatule de la Medite>ran<5e, 1886, p. 106 

 (sacculi). — P. H. Carpenter, Challenger Reports, Zoology, vol. 26, pt. 60, 1888, pp. 76, 79-81, 

 83, 367, 374 (discussion). — Bell, Proc. Zool. Soc. London, 1894, p. 392 (type in the collection 

 of W. Percy Sladen), p. 397 (comparison with E. granulalus). — Walther, Einleitung in die 

 Geologie als historisch. Wiss., 1894, p. 299 (from Carpenter). — Pfeffer, Abh. Senck. Naturf. 

 Ges., vol. 25, 1900, p. 85 (Ternate) .— A. H. Clark, Proc. TJ. S. Nat. Mus., vol. 32, 1907, p. 

 574 (original reference and type locality). — Hamann, Bronns Klassen und Ordnungen des 

 Tier-Reichs, vol. 2, Abt. 3, 1907, p. 1576 (listed).— A. H. Clark, Proc. Biol. Soc. Washington, 

 vol. 21, 1908, p. 134 (belongs to same type as E. granulatus and E. variegalus; arm structure); 

 Proc. U. S. Nat. Mus., vol. 34, 1908, p. 271 (history; original description; structure; relation- 

 ships), p. 277 (listed); vol. 35, 1908, pp. 113, 114, 117 (arm structure); Smithsonian Misc. 

 Coll., vol. 52, pt. 2, 1908, p. 211 (compared with E. serripinna) ; Proc. U. S. Nat. Mus., vol. 

 39, 1911, p. 540 (Albatross station 5356); Mem. Australian Mus., vol. 4, 1911, p. 715 (belongs 

 to a family peculiarly charactristic of the Jurassic rocks of Europe) ; Crinoids of the Indian 

 Ocean, 1912, p. 3 (history), p. 32 (identity), p. 38 (E. granulatus a synonym), p. 102 (synonymy; 

 localities); Smithsonian Misc. Coll., vol. 61, No. 15, 1913, p. 21 (published reference to speci- 

 men in the B.M.; Macclesfield Bank, 34-40 fathoms; characters); Amer. Journ. Sci., vol. 40, 

 1915, p. 62 (listed; Unstalked crinoids of the Siboga-Exped., 1918, p. 65 (in key; range), p. 71 

 (synonymy; notes; stations 65a, 144, 257,260, 305); Albatross station 5356); pp. 272, 273, 275, 

 276 (listed). — Gislen, Nova Acta Reg. Soc. Sci. Upsaliensis, ser. 4, vol. 5, No. 6, 1922, p. 4 

 (182 m.), p. 6 (Bonin Islands), p. 68 (Bock's station 59; detailed notes), p. 183 (listed), fig. 

 52, p. 70; Zool. Bidrag Uppsala, vol. 9, 1924, p. 46 (obliquity of joint faces), p. 77 (syzygies), 

 fig. 68, p. 75 (sygygial face). — A. H. Clark, Temminckia, vol. 1, 1936, p. 301 (Snellius Station 

 60*; notes).— Gislen, Kungl. Fysiogr. Sallsk. Lund Forh., vol. 7, No. 1, 1936, p. 3 (Mac- 

 clesfield Bank), p. 6 (range). 



Eudiocrinus granulatus Bell, Proc. Zool. Soc. London, 1894, pp. 396, 397 (detailed description and 

 comparisons; Macclesfield Bank, 34-40 fms.), pi. 23, opposite p. 392. — A. H. Clark, Proc. 

 U. S. Nat. Mus., vol. 32, 1907, p. 573 (original reference and type locality). — Hamann, Bronns 

 Klassen und Ordnungen des Tier-Reichs, vol. 2, Abt. 3, 1907, p. 1576 (listed). — A. H. Clark, 

 Proc. Biol. Soc. Washington, vol. 21, 1908, p. 134 (belongs to same type as E. indivisus and E, 

 variegalus; arm structure); Proc. U. S. Nat. Mus., vol. 34, 1908, p. 271 (history), p. 272 (rela- 

 tionships), p. 273, footnote (discrepancies between the original figure and description noted), 

 p. 277 (listed); vol. 35, 1908, p. 117 (arm structure); Smiths. Misc. Coll., vol. 52, 1908, p. 

 211 (compared with E. serripinna; correction of original diagnosis); Crinoids of the Indian 

 Ocean, 1912, p. 38 (identity); Unstalked crinoids of the Siboga-Exped., 1918, p. 65, footnote 2 

 (synonym of indivisus) . — Gislen, Nova Acta Reg. Soc. Sci. Upsaliensis, ser. 4, vol. 5, No. 

 6, 1922, pp. 68, 69 (discussion). 



Diagnostic features. — The cirri have 18-20 segments of which the longest proxi- 

 mal are about twice as long as broad and the outermost are about as long as broad. 

 The arms are 80-90 mm. long. The edges of the elements of the IBr series and the 

 proximal and distal ends of the brachials are scarcely or not at all modified. P a 

 and P 2 are enlarged and prismatic with up to 26 segments. The distal ends of the 



