PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 173 



Antedon pumtla Bell, Rep. Zool. Coll. H.M.S. Alert, 1884, p. 155 (specific formula), p. 157 (detailed 

 description; Port Jackson, 0-5 fms.; Nelson's Bay), pi. 10, figs. B, a-b; Proc. Linn. Soc. New 

 South Wales, vol. 9, for 1884, 1885, p. 498 (Nelson's Bay, Port Stephens). — P. H. Carpenter, 

 Challenger Reports, Zoology, vol. 26, pt. 60, 1888, pp. 54, 56, 193, 206, 366, 378.— Bell, Ann. 

 Mag. Nat. Hist., ser. 6, vol. 3, 1889, p. 292. — P.H. Carpenter, Proc. Roy. Soc. Victoria, new 

 ser., vol. 2, 1890, p. 135 (Port Phillip). — Ramsay, Rec. Australian Mus., vol. 1, 1890, p. 84 (Port 

 Jackson). — Whitelegge, Journ. Roy. Soc. New South Wales, vol. 23, for 1889, 1890, pt. 2, p. 

 197 [p. 35 of separate] (correction of Bell; occurrence; pentacrinoids). — Hartlaub, Nova Acta 

 Acad. German., vol. 58, No. 1, 1891, p. 113 (in Gottingen Mus.). — Sayce, Victorian Naturalist, 

 vol. 18, No. 10, Feb. 6, 1902, p. 153 (entrance to Port Phillip, 6-9 fms.).— Bell, Victorian Nat- 

 uralist, vol. 18, No. 10, Feb. 6, 1902, p. 153. — A. H. Clark, Smithsonian Misc. Coll., vol. 50, pt. 

 3, 1907, p. 342 (compared with A. orientalis), p. 352 (obviously belongs with the A. bifida type), 

 p. 353 (listed). — Hamann, Bronn's Klassen und Ordnungen des Tier-Reichs, vol. 2, Abt. 3, 1907, 

 pp. 1579, 1580 (listed).— A. H. Clark, Proc. U.S. Nat. Mus., vol. 34, 1908, pp. 481, 490 (synonym 

 of A. loveni Bell, 1882) ; vol. 38, 1910, p. 275; Mem. Australian Mus., vol. 4, 1911, p. 714 (of Alert 

 report = C loveni), p. 715 (of Bell, 1885 = the same), p. 716 (credited to Australia by Carpenter; 

 synonym of A. loveni Bell, 1882), Crinoids of the Indian Ocean, 1912, p. 31 (of Bell, 1884 = C. 

 loveni), p. 34 (of Carpenter, 1888 = the same); Smithsonian Misc. Coll., vol. 61, No. 15, 1913, 

 p. 86 (of Bell, 1889 = C. incommoda-\-C. loveni). — Harrison, Proc. Pan-Pacific Sci. Congress, 

 Melbourne, vol. 2, 1924, p. 13. 



Compsometra loveni A. H. Clark, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 131 (listed); Proc. 

 U.S. Nat. Mus., vol. 38, 1910, p. 275 (nearly 800 in the Australian Mus. from various localities; 

 compared with C. lacertosa); in Michaelsen and Hartmeyer, Die Fauna Sudwest-Australiens, 

 vol. 3, Lief. 13, Crinoidea, 1911, p. 442 (south Australia to Dampier archipelago and Claremont 

 I.), p. 443 (range on east coast), p. 444 (range on west coast); Mem. Australian Mus., vol. 4, 



1911, p. 717 (known to Carpenter from Australia), p. 718 (original notes by Whitelegge; recorded 

 by Carpenter, 1890, and by Ramsay, 1890), p. 722 (confined to south Australia; range), p. 735 

 (in key), p. 790 (annotated synonymy; characters; localities); Crinoids of the Indian Ocean, 



1912, p. 10 (confined to south Australia), p. 31 (. = A. pumtla Bell, 1884), p. 34 i = A. pumila 

 P. H. Carpenter, 1888), p. 229 (synonymy; south Australia, 0-5 fms.); Smithsonian Misc. Coll., 

 vol. 61, No. 15, 1913, p. 53 (published references to specimens in the B.M.; localities); Die Crinol- 

 den der Antarktis, 1915, p. 167 (range); Internat. Rev. gesamt. Hydrobiol. und Hydrogr., 1915, 

 p. 227 (detailed account of the distribution); Unstalked crinoids of the Siboga-Exped., 1918, p. 

 205 (in key; range), p. 209 (synonymy). — Mortensen, Studies in the development of crinoids, 

 1920, p. 30 (comparison of the pentacrinoid with that of C. serrata). — H. L. Clark, Mem. Mus. 

 Comp. Zool., vol. 55, 1938, p. 46 (Port Jackson). — Pope, Proc. Linn. Soc. New South Wales, 

 vol. 68, 1943, p. 246 (habitat). — H. L. Clark, Echinoderm fauna of Australia, 1946, p. 61 (dis- 

 tribution; Port Phillip record needs confirmation). 



Diagnostic features. — The XV-XXX cirri are short (usually about a fifth of the 

 arm length) wnth the outer portion gently recurved and somewhat flattened, so that 

 they increase slightly in dorso ventral width distaUy; they are composed of 12 to 14 

 segments, of which the longest are about twice as long as the median breadth, the distal 

 decreasing to about half again as long as broad on the antepenultimate; Pi has 10 to 13 

 segments; P2 with 7 to 10 is only about half as long; P3 is larger than P2; the centro- 

 dorsal is hemispherical, more or less flattened, \vith a fairly large convex polar area; the 

 arm bases make less than a right angle with the dorsoventral axis, at least when the 

 arms are not fuUy extended. 



The arms are from 20 to 70 mm. (usually from 30 to 35 mm.) and the cirri from 

 7 to 8 mm. in length. 



The relatively longer cirri, which are not strongly flattened and recurved distally 

 and have longer distal segments, the more or less hemispherical centrodorsal, the 

 smaller Pi with fewer segments and the absence of the characteristic flattened appear- 

 ance distinguish this species from the other south Australian form, A. incommoda. 



