A MONOGRAPH OF THE EXISTING CRINOIDS 



107 



Baudin Island, northwestern Australia; 15-27 meters [A. H. Clark, 1911, 1912, 

 191-3] (1,'B. M.). 



Baudin Island [A. H. Clark, 1911, 1912, 1913] (1, B. M.). 



Amboina; pier; 0-2 meters; Willebrord Snellius, May 6, 1930 [A. H. Clark, 1936] 

 (1, L. M.). 



Darwin, near Shell Islands; 5-11 meters; on sponge and alcyonarian bottom; 

 H. L. Clark, July 2, 1929 [H. L. Clark, 1938]. 



Mermaid Strait; Gazelle [A. H. Clark, 1909, 1911, 1912; Hartmeyer, 1916] (4, 

 U. S. N. M., 35157; Berl. M., 2963). 



Challenger station 190; Arafura Sea (lat. 8°56'S., long. 136°05'E.); 89 meters; 

 green mud ; September 12, 1874 [von Graff, 1884; P. H. Carpenter, 1888; A. H. Clark, 

 1911, 1912, 1913] (3, B. M.). 



Thursday Island; H. M. S. Alert [Bell, 1884; A. H. Clark, 1911]. 



Thursday Island; Prof. Richard Semon [Doderlein, 1898]. 



Torres Strait; 18 meters; sand ;H. M.S. Alert, 1881 [von Graff, 1887; P. H. Car- 

 penter, 18S8; A. H. Clark, 1911, 1912, 1913] (1, B. M.). 



Prince of Wales Channel; 13 meters; sand [A. H. Clark, 1911, 1913] (1, B. M.). 



Mast Head Island ; lagoon [A. H. Clark, 1911] (1, Austr. Mus.). 



Mast Head Island [A. H. Clark, 1911] (1, U. S. N. M., 35164). 



Port Deuison, Queensland [A. H. Clark, 1911] (2, Austr. Mus.). 



Port Molle, Queensland; 22-36 meters; rock; H. M. S. Alert [Bell, 1884; A. H. 

 Clark, 1911, 1913] (3, B. M.). 



Port Molle [A. H. Clark, 1911] (1, Austr. Mus.). 



Port Curtis, Queensland [A. H. Clark, 1911] (3, U. S. N. M., 35132; 35161; 

 Austr. M.). 



Norwest Islet, Capricorn group; 11 meters; Livingstone and Boardman, Decem- 

 ber 1930 [H. L. Clark, 1938]. 



Off Noosa Head, southern Queensland; 29 meters; Endeavour [H. L. Clark, 1916] 

 (1, M. C. Z., 712). 



Eight miles east of Sandon Bluffs, New South Wales; 64-73 meters; Endeavour 

 [H. L. Clark, 1916] (2, Austr. Mus.). 



Geographical range. — Northern Australia south to between Fremantle and 

 Geraldton on the west and to Sandon Bluffs, New South Wales, on the east; Amboina. 



Bathymetrical range.— From the shore line down to 89 meters; chiefly sublittoral. 



Occurrence. — Dr. H. L. Clark says that this is a very common comatulid at 

 Broome, occurring under the same conditions as Z. comata. But while occurring with 

 Z. comata on open sandy bottoms, this species also occurs among rocks and is fre- 

 quently dredged on bottoms covered with algae, sponges, and other marine growths. 



History.— This species was first noticed by Prof. F. Jeffrey Bell who published 

 a specific formula for it in 1882. He described it in detail from a specimen from Port 

 Molle and figured it in his Alert report in 1884. A detached disk from Thursday 

 Island, which had been collected by the Alert, he said probably belonged to this 

 species. 



In the Challenger report upon the stalked crinoids published in 1884 Dr. P. H. 

 Carpenter mentioned Antedon fluctuans as an example of a comatulid having a syzygy 

 between the elements of the IBr series and in a footnote gave a specific formula for it. 



