A MONOGRAPH OF THE EXISTING CEINOIDS 383 



Holothuria Bank; 27 meters [Bell, 1894; A. H. Clark, 1911, 1918]. Same; 

 27 meters [A. H. Clark, 1913, 1918] (1, B. M.). 



Northwestern Australia; 15-27 meters [Bell, 1894; A. H. Clark, 1911, 1913, 19181 

 (2, B. M.). 



Western Australia [A. H. Clark, 1911 (also as West Australia), 1913, 19181 

 (3, B. M.). 



Australia; MM. P6ron and Lesueur [Guerin-Meneville, 1828-1837; Griffith, 1834 ; 

 Dujardin and Hupe\ 1862; A. H. Clark, 1911, 1918] (1, P. M.). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; station 101; Java sea; 

 49 meters; sand, stones, and sponges; August 5, 1922 (1). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; station 75; Sunda 

 Straits (lat. 6°10' S., long. 105°44' E.); 40 meters; sand and shells; July 29, 1922 (7). 



No locality [A. H. Clark, 1913] (2, B.M.). 



Geographical range. — From Formosa (Taiwan) and the Philippines to Singapore, 

 and southward to Port Molle, Queensland, and Holothuria Bank, northwestern 

 Australia. 



Bathymetrical range. — From the shoreline down to 93 meters; nearly all the 

 records are from depths of less than 30 meters. 



History. — The figure of Comatula carinata published by Guerin-M6neville in his 

 "Iconographie du Eegne Animal" (1828-1837) and republished by Griffith in 1834 

 undoubtedly represents this form. 



In 1862 Dujardin and Hupe gave a list of 12 names that they found with speci- 

 mens in the Paris Museum. One of these names was Comatula dibrachiata. 



Dr. P. H. Carpenter did not distinguish this form from milberti. It was included 

 by him in milberti when he assigned that species to the genus Antedon in 1879. Bell's 

 specific formula for milberti published in 1882 and Carpenter's emendation of it pub- 

 lished in 1883 both included discoidea. 



In the Alert report published in 1884 Bell recorded Antedon milberti from Port 

 Molle, Port Denison, the Prince of Wales Channel, and Torres Strait. Except for 

 a single specimen from Port Molle, all Bell's specimens represented the present form. 



In the Challenger report on the comatulids published by Carpenter in 1888 the 

 Alert localities just given that were included under Antedon milberti refer to discoidea, 

 with the single exception noted. 



In 1894 Prof. F. Jeffrey Bell published a list of the echinoderms collected by 

 P. W. Bassett-Smith, Surgeon, R. N., while attached to H. M. S. Penguin during a 

 surveying trip in northwestern Australia. Professor Bell gave no specific localities 

 for the specimens, saying merely that the chief localities were Holothuria Bank, 

 Magnetic Shoal, Cossack Island, and Baudin Island Gat. 14°08' S., long. 125°36' E.). 

 He said that Antedon milberti was obtained in 8-15 fathoms. The present species 

 was secured only on Holothuria Bank. 



In a paper published on December 10, 1908, I described Himerometra ensifer 

 (=Amphimetra ensifer) and compared its arms with those of H. discoidea, the latter 

 name appearing as a nomen nudum. In another paper published on December 23, 

 1908, Himerometra discoidea was described in detail from a specimen from Port 

 Denison in the United States National Museum, which had many years before been 

 secured from the Australian Museum, and was recorded also from Albatross station 



