A MONOGRAPH OF THE EXISTING CRINOIDS 



Actinometra simplex BELL, Proc. Zool. Soc. London, 1894, p. 396 (Macclesfield Bank, 13 fms.). 



Actinometra maculala BELL, Proc. Zool. Soc. London, 1894, p. 395 (Parry's shoal, 12 fms.); p. 390 

 (Macclesfield Bank; same, 13-36 fins.). 



Calometra bassett-smithi A. H. CLARK, Smiths. Miscell. Coll. (Quarterly Issue), vol. 50, part 3, 

 1907, p. 363 (listed). 



Comatula notata A. H. CLARK, Proc. U. S. Nat. Mus., vol. 33, 1908, p. 685 (listed); vol. 35, 1908, 

 p. 124 (listed). 



Comaster stelligera A. H. CLARK, Proc. U. S. Nat. Mas., vol. 33, 1908, p. 686 (listed). 



Phanogenia stelligera A. H. CLARK, Proc. U. S. Nat. Mus., vol. 35, 1908, p. 124 (listed). 



Comatella stelligera A. H. CLARK, Smiths. Miscell. Coll., vol. 52, part 2, 1908, p. 207 (structure); 

 Proc. U. S. Nat. Mus., vol. 36, 1909, p. 395, footnote (Antedon bassett-smilhi identified as this 

 species); Vidensk. Medd. fra den naturhist. Forening i K0benhavn, 1909, p. 136 (synonymy; 

 includes tenax, notata and basselt-smithi; Samoa; Tonga; descriptions of specimens; discussion); 

 Proc. U. S. Nat. Mus., vol. 39, 1911, p. 530 (differential characters; comparison with C. nigra); 

 Die Fauna Siidwest-Australiens, vol. 3, Lief. 13, 1911, p. 439 (East Indian species occurring 

 south to Port Jackson); p. 440 (range on the east coast); Memoirs Australian Mus., vol. 4, 

 1911, p. 722 (occurs south to Port Jackson or Sydney); p. 732 (in key); p. 738 (annotated syn- 

 onymy; characters; Port Jackson; description of the specimen; range); Smiths. Miscell. Coll. vol. 

 60, No. 10, 1912, p. 3 (Samoa and Fiji; ?Chinese coast; descriptions of specimens); Proc. U. S. 

 Nat. Mus., vol. 43, 1912, p. 386 (New Guinea); Crinoids of the Indian Ocean, 1912, p. 35 

 (includes Actinometra stelligera P. H. Carpenter, 1888) ; p. 36 (includes A. notata P. H. Carpen- 

 ter, 1889); p. 37 ( = A. stelligera Hartlaub, 1891); p. 38 (includes Antedon basselt-smithi and 

 Actinometra maculata of Bell, 1894); p. 40 ( = A. notata Chadwick, 1904); p. 68 (synonymy; 

 Padaw, Mergui Archipelago; description; ?India; summary of previous records; Proc. Biol. 

 Soc. Washington, vol. 26, 1913, p. 178 (range in east Asia); Smiths. Miscell. Coll., vol. 61, 

 No. 15, 1913, p. 3 (published references to specimens in the B.M.; Samoa and Fiji; Reef of 

 Atagor; Challenger station 174; Macclesfield Bank, 13-36 fms., and without depth; Parry's 

 shoal, 12 fms.; notes). REICHENSPERGER, Abhandl. Senck. naturf. Gesellsch., vol. 35, Heft 1, 

 1913, p. 83 (Ceylon); p. 84 (Ceylon; Dr. Sarasin: characters of the specimen; on a regenerat- 

 ing arm an axillary bears 2 pinnules); fig. 1, p. 84 (a IIIBr axillary bearing 2 pinnules). 

 A. H. CLARK, Journ. Washington Acad. Sci., vol. 5, No. 6, 1915, p. 214 (Malayan species; range 

 and its significance) ; Internat. Revue d. gesamt. Hydrobiol. u. Hydrogr., 1915, pp. 222 and 

 following (detailed account of the distribution in Australia). H. L. CLARK, Spolia Zeylanica, 

 vol. 10, part 37, 1915, p. 92 (occurs at Ceylon); Carnegie Institution of Washington Pub- 

 lication 212, 1915, p. 101 (very common at Mer); pp. 107 and following (habits and reac- 

 tions). HARTMEYER, Mitt. zool. Mus. Berlin, vol. 8, Heft 2, 1916, p. 233 (New Guinea; No. 

 6378). A. H. CLARK, Unstalked Criuoids of the Siboga Exped., 1918, p. 4 (in key; range); 

 p. 5 (synonymy; detailed account; Stas. 89, 96, 99, 322); pp. 272, 276 (listed); pi. 2 (colored 

 figure). H. L. CLARK, The Echinoderm Fauna of Torres Strait, 1921, p. 8 (collected by the 

 Carnegie Exped., 1913); p. 13 (Mer; color; discussion); pp. 192 and following (range); pi. 2, 

 fig. 2 (colored). GISLEN, Nova Acta reg. Soc. sci. Upsaliensis, scr. 4, vol. 5, No. 6, 1922, 

 p. 18 (Bock's Stas. 43, 56, 59; notes); figs. 7-9, p. 28. H. L. CLARK, Journ. Linn. Soc. (Zool.), 

 vol. 35, 1923, p. 231 (Abrolhos Is.); p. 232 (Wooded Isle; characters); Records Australian 

 Mus., vol. 15, No. 2, Nov. 18, 1926, p. 183 (Ellison reef; Surprise shoal). A. H. CLARK, 

 Journ. Linn. Soc. (Zool.), vol. 36, No. 249, May 3, 1929, p. 636 (Sahul Bank; notes). 



Diagnostic features. The size is medium to rather large; the cirri have 18-26 

 (usually 20-25) segments and are from 15 to 25 mm. (usually from 15 to 20 mm.) in 

 length; there are 27-50 (-usually 30-40) arms, which are from 90 to 120 mm. long; 

 IIIBr series are usually present on the outer derivatives from each IIBr axillary, the 

 inner derivatives remaining undivided. 



Description. The centrodorsal is a broad, flat, moderately thick disk, with the 

 broad polar area flat and about 5 mm. in diameter. The cirrus sockets are arranged 

 in 3 closely crowded alternating rows. 



