A MONOGRAPH OF THE EXISTING CRINOIDS 51 



Of the five specimens from the Andaman Islands one, in a fairly good state of 

 preservation, has the arms approximately 50 mm. long. The cirri are XV, 30-31, 

 12 mm. long. The segments of the proximal pinnules have exceedingly spiny distal 

 ends, this character becoming gradually less marked and disappearing at about the 

 tenth pair. The first and following cirrus segments have the distal dorsal edge everted, 

 this eversion gradually becoming higher and narrower, and transforming into a long 

 spine after the seventh. The color is white, the IBr series and arms with a lateral 

 purple line which fades away distally on the arms ; each cirrus segment has a narrow 

 central purple band. When placed side by side with the type this specimen showed 

 no differences. Three of the others resemble it. The remaining one is deep violet in 

 color, the cirri yellow with the usual purple bands on each segment. The proximal 

 pinnules are not so spiny as usual, and Pj has about 12 segments instead of 9. 



Localities. Albatross station 5153; Tawi Tawi group, Sulu (Jolo) Archipelago, 

 Philippine Islands; Tocanhi Point bearing S. 27 E., 2.1 miles distant (lat. 5 18' 10" 

 N., long. 120 02'55" E.); 89 meters; coral, sand, and shells; February 19, 1908 [A. H. 

 Clark, 1908, 1909, 1911, 1912, 1916, 1918] (1, U.S.N.M., 25444). 



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

 50 meters; stones and sand; March 2, 1922 (1). 



Siboga station 260; 2.3 miles N. 63 W. from the north point of Nuhu Jaan, Kei 

 Islands (lat. 536'30" S., long. 132 55' 12" E.); 90 meters; sand, coral, and shells; 

 December 16 and 18, 1899 [A. H. Clark, 1918] (2, Amsterdam, Mus.). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; station 54; 85 meters; 

 sand and coral; May 9, 1922 (4). 



Siboga station 305; mid-channel in Solor Strait, off Kampong Menanga; 113 

 meters; stony bottom; February 8, 1900 [A. H. Clark, 1918] (2, U.S.N.M., E. 437; 

 Amsterdam Mus.). 



Investigator; Andaman Islands [A. H. Clark, 1912] (5, U.S.N.M., 35317 [original 

 No. 36B], 35334 [original No. 20B], 35337 [original No. 22B]; I. M.). 



Geographical range. From the Philippines southward to the Kei Islands and 

 westward to the Andamans. 



Bathymetrical range. From 85 to 1 1 3 meters. The average of 4 records is 94 meters. 



History. This species was described in 1908 as Oligometra gracilicirra from a 

 specimen from Albatross station 5153. In 1912 five additional specimens were 

 recorded from the Andaman Islands, where they had been dredged by the Royal 

 Indian Marine Surveying steamer Investigator. Notes were given on these, and a 

 more or less schematic figure of the species was published. In 1918 four specimens 

 were recorded, with notes, from Siboga stations 260 and 305. 



COTYLOMETRA GRACILICIRRA ORNATA (A. H. Clark) 



[See vol. 1, pt. 2, fig. 199 (lateral view), p. 129; figs. 490, 491 (pinnule tip), p. 273.] 



Oligometra gracilicirra var. ornala A. H. CLARK, Proc. U. S. Nat. Mus., vol. 39, 1911, p. 544 (descrip- 

 tion; Albatross stations 5355, 5356); Crinoids of the Indian Ocean, 1912, p. 168 (synonymy; 

 localities) . 



Cotylometra gracilicirra ornata A. H. CLARK, TJnstalked crinoids of the Siboga-'Exped., 1918, p. 70 

 (compared with Eudiocrinus ornatus). 



Cotylometra ornata A. H. CLARK, Unstalked crinoids of the Siboja-Exped., 1918, p. 128 (in key; 

 range) . 



