A MONOGRAPH OF THE EXISTING CRINOIDS 301 



longer, and a little smaller than P 3 , which is the longest pinnule. P 4 is nearly the 

 size of P 2 , but the length of the pinnules decreases abruptly beyond P 5 . The color 

 is dark purple-violet. 



The two specimens of Antedon ludovici recorded by Doderlein from Amboina 

 probably represented this species and not Craspedometra acutidrra. 



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

 90; Sebesi Strait, between Java and Sumatra; 36 meters; hard bottom; August 1, 

 1922 (1). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; Station 31 ; about 50 

 meters; sand; April 19, 1922 (4). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; station 38; about 

 35 meters; sand; April 24, 1922 (3). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; Amboina Bay; about 

 50 meters; stones and sand; March 2, 1922 (7). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; Amboina; break- 

 water; about 1 meter; February 28, 1922 (5). 



Amboina; Dr. J. Brock, 1884-'85 [Hartlaub, 1891]. 



Amboina; Professor Strubell, 1890 [Reichensperger, 1913]. 



Bay of Amboina; Maurice Bedot and C. Pictet [Koehler, 1895; A. H. Clark, 

 1912]. 



?Amboina; Prof. Eichard Semon [Doderlein, 1898]. 



Singapore; Svend Gad, December 12, 1906 (1, C. M.). 



Ceylon; Doctor Sarasin, 1886 [Reichensperger, 1913]. 



Geographical range. From the Kei Islands, Amboina, and Singapore westward 

 to Ceylon. 



Bathy metrical range. From the shoreline down to about 50 meters. 



History. In 1891 Dr. Clemens Hartlaub described in detail and figured a species 

 represented by 12 specimens, which had been collected by Dr. J. Brock at Amboma 

 in 1884-85. He had at first considered this form as new, but later he decided that it 

 represented Carpenter's Antedon ludovici, so he published the long description which 

 he had prepared under that name. 



In 1895 Prof. Rene Koehler recorded, under the name of Antedon ludovici, and 

 gave notes upon a number of specimens collected at the Bay of Amboina by Maurice 

 Bedot and Camille Pictet. 



In 1898 Prof. Ludwig Doderlein recorded two specimens of Antedon ludovici that 

 had been collected by Prof. Richard Semon at Amboina. These probably repre- 

 sented the present species. 



A study of the type specimens of Carpenter's Antedon ludovici, A. acutidrra 

 and A. bipartipinna at the Hamburg Museum in 1910 had convinced me that all three 

 represent the same species, and furthermore that this species is quite different from 

 that represented by Hartlaub's specimens from Amboina. Accordingly in my 

 memoir on the crinoids of the Indian Ocean published in 1912 I named the species 

 from Amboina Craspedometra amboinae on the basis of Hartlaub's description, which 



I quoted. 



In 1913 Dr. August Reichensperger remarked that amboinae is clearly differen- 

 tiated from Carpenter's acutidrra, and under the heading Craspedometra amboinae he 



