A MONOGRAPH OF THE EXISTING CRINOIDS 169 



was brought to the Paris Museum by Quoy and Gaimard, and the two dredged at 

 Banda by the Challenger." The specimen collected by P^ron and Lesueur he referred 

 to multiradiata and not to his new species sentosa. But for this specimen he erro- 

 neously gave the locality "Australian Seas" instead of the Moluccas. P^ron and 

 Lesueur's specimen from Australia was taken by J. Miiller as the type specimen of 

 Lamarck's Comatula multiradiata and was redescribed by him under the name of 

 Alecto multijida. Evidently Carpenter confused these two examples. 



Following Carpenter, all authors have accepted sentosa as a species distinct from 

 multiradiata. 



This species was recorded by Koehler in 1S95 from Billiton, and by F. Jeffrey 

 Bell in 1902 from the Maldive Islands. The present author recorded it in 1908 from 

 Albatross stations 5139, 5141, 5146, and 5147, and in .1909 from station 5249, and also 

 from Singapore. 



In 1911 he published notes on the specimens from the Moluccas collected by 

 Peron and Lesueur and by Quoy and Gaimard which he had examined in Paris in 

 the preceding year, and recorded it from Albatross stations 5355, 5481, 5482, and 

 5483. In 1912 he recorded the specimens from the Indian Ocean which had been 

 collected by the Investigator, and in 1913 he published his notes on the specimens in 

 the British Museum examined in 1910. In 1914 he recorded it from the coast of 

 Western Australia, and in 1918 from three localities in the Dutch East Indies where 

 it had been collected by the Siboga. 



Most of the records of this species have been accompanied by notes on various 

 details of the structure, and in 1924 Gisl^n published additional information on the 

 morphology. 



CAPILLASTER GRACIUaRRA A. H. Clark 



Plate 9, Figure 27 



Capillaster gracilicirra A. H. Clark, Proc. Biol. Soc. Washington, vol. 25, 1912, p. 18 (description; 

 Siboga station 320); Unstalked Crinoids of the Siboga Exped., 1918, p. VIII (discoverj- by the 

 Siboga and its significance); p. 10 (in key; range); p. 11 (detailed description; stations 318, 

 320); p. 276 (listed); pi. 11, fig. 3. 



Diagnostic features. — This species resembles C. sentosa except for having the 

 distal cirrus segments about as long as broad instead of broader than long. There 

 are 27-36 (usually nearer the latter) cirrus segments, and 33-110 arms. 



Description. — The cirri are XVII, 27-36 (usually nearer the latter), from 33 to 

 35 mm. long. The longest proximal segments are t\vice as long as broad, and are 

 slightly constricted centrally with swollen ends. The shorter distal segments are 

 about as long as broad. The tenth or eleventh is a transition segment. The eleventh 

 or twelfth segments have several sharp spines on the distal border; on the two or 

 three segments following, the central spine rapidly increases in size, becoming a 

 long subterniinal dorsal spine flanked at the base by a smaller one on either side. On 

 the outer cirrus segments there may be two dorsal spines, a proximal and a distal. 



The arms are 33-110 in number, from 100 to 140 mm. in length. 



Except for the characters given above this species resembles C. sentosa. 



