A MONOGRAPH OF THE EXISTING CRINOIDS 125 



at the original Porcupine station. Carpenter thought it very probable that the com- 

 atulids obtained by the Talisman in depths of about 1,200 meters off the Azores and 

 Canaries, in 2,200 meters off Agadir, and hi 2,330 meters near the Cape Verde Islands 

 may belong to the same deep sea type. He said that the former, however, might possibly 

 also include Antedon (Leptometra) phalangium "which is now known to extend down 

 to at least 500 fathoms." Carpenter called attention to the similarity in the arm divi- 

 sion between Antedon (Stiremetra) lusitanica and A. (Thalassometra) multispina and 

 said that should IIBr 4(3 + 4) series prove to be common in these two species it may 

 become necessary to unite them under one name. At present, he said, the main points 

 of difference between them, apart from the characters of the arm divisions, appear to 

 lie in the longer cirri and less spinous arms of lusitaniea, in which also the segments of 

 the genital pinnules, as the Madeira specimens show, are somewhat produced upward 

 on the outer side as is so markedly the case in Antedon (Charitometra) basicurva; but, 

 he said, there is nothing of this kind in multispina. 



In a survey of the Basicurva group published in 1895 Dr. Clemens Hartlaub listed 

 Antedon lusitanica, giving the locality and depth, and in 1904 Dr. James A. Grieg also 

 mentioned it as a member of the Basicurva group. Dr. Wilhlem Minckert in 1905 

 listed it as one of the species of the Basicurva group falling also in the Spinifera and 

 Granulifera groups. 



In my first revision of the genus Antedon published in 1907 lusitanica was trans- 

 ferred to the new genus Thalassometra. In my revision of the family Thalassometridae 

 published in 1909 Antedon lusitanica was listed among the species I was unable to place 

 satisfactorily. 



In 1909 Prof. Rene Koehler recorded numerous specimens of Antedon lusitanica 

 from the dredgings of Prince Albert of Monaco's yacht Princesse- Alice, several from 

 station 806 (cruise of 1897), an isolated disk from station 1116 (1901), one from station 

 1236 (1901), one from station 1713 (1904), and three from station 2048 (1906). He 

 gave figures of two specimens showing the color hi life bright clear yellow a figure 

 of a 13-armed specimen from station 806 with the IIBr series both 2 and 4(3 + 4), a 

 figure of a 10-armed specimen, and a figure of a specimen with the arms broken off at 

 the first syzygy but with almost all the cirri intact. He said that Antedon lusitanica 

 had been discovered by the Challenger (in reality the Porcupine) off Cape Carvoeiro, 

 and was rediscovered by the Princesse-Alice in neighboring regions. He added that this 

 species is also found on the opposite coasts of the Atlantic, as Carpenter identified it on 

 a fragment of broken cable coming from the coast of Brazil. This refers to Carpenter's 

 record from the vicinity of Madeira. 



In 1910 Profs. Rend Koehler and Clement Vaney recorded, without comment, four 

 specimens of Antedon (Crotalometra) lusitanica, collected by the Talisman in lat. 

 3317' N., long. 1123' W. in 1,635 meters, thus identifying the "comatules jaune soufro" 

 mentioned by Captain Parfait in 1884. 



In a paper on the crinoids of the African coasts published hi 1911 I listed Thalas- 

 sometra lusitanica and gave the synonymy and the localities from which it is known. 

 Dr. Clemens Hartlaub in 1912 listed Antedon lusitanica as a member of the Spinifera 

 group. In a paper on the crinoids of the British Museum published in 1913 I noted 

 that I had seen three specimens of Thalassometra lusitanica from Porcupine station 

 17a "agreeing with the published figures." In my memoir on the unstalked crinoids 



