478 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



lower pinnules is variable, being sometimes small and ceasing at about the tenth 

 brachial, and sometimes much larger, extending out to the fortieth brachial. 



The disk is 50 mm. in diameter. The mouth is interradial. The ventral surface 

 of the disk is usually naked, except for a little plating around the peristome. The 

 posterior arms are mostly without ambulacral grooves, and in one case, at least, 

 there are ungrooved arms on each ray. 



The color in alcohol is dull green, either alone or mottled with purple, brown, 

 and white. 



I examined these specimens in London and found them to be quite like others 

 in tlie Albatross Philippine collection. 



The specimen from Palawan is a magnificent example, with about 100 arms 155 

 mm. long. Seven large functional cirri 13 mm. in length remain, all on the anterior 

 semicircumference of the centrodrosal. 



The specimen from Cebu is typical. There is a single cirrus remaining. 



Of the specimens fi'om Port Galera, Mindoro, one has about 140 arms 200 mm. 

 long. Another also has the arms 200 mm. in length. In one of the specimens 3 of the 

 IIBr series are 2, and of the 20 IIIBr series 1 1 are 2 and 9 are 4 (3 + 4) ; the arrangement 

 of these last is not typical. 



In the specimen from the Macclesfield Bank the centrodorsal bears the stumps of 

 a row of cirri. 



The specimen without locality in the Paris Museum is small but typical; there 

 are no cirri. 



Localities.— Suyadivn, Maldives [Bell, 1902; A. H. Clark, 1912, 1913] (1, B. M.). 



Ceylon [H. L. Clark, 1915] (1, M. C. Z., 602). 



Investigator; off Tobu Island; 64 meters [A. H. Clark, 1912] (1, U.S.N. M., 35122). 



Investigator; Invisible Bank, Andaman Islands (lat. 11° 29' to 10° 59' N., long. 

 93° 30' E.) [A. H. Clark, 1912] (1, U.S.N.M., 35119). 



Malacca [A. H. Clark, 1912, 1913] (1, B. M.). 



Singapore; Svend Gad [A. H. Clark, 1909, 1912] (2, C. M.). 



Investigator; southern portion of Malacca Straits [A. H. Clark, 1912] (1, I M.). 



BUHton, Sunda Islands [Koehler, 1895; A. H. Clark, 1912]. 



Danish expedition to the Kei Islands; Dr. Th. Mortensen; station 67; Java 

 Sea, north of western Java (lat. 5° 48' S., long. 106° 12' E.); 38 meters; sand; July 27, 

 1922 (2). PI. 55, fig. 161. 



Siboga; Batavia Bay, Java [A. H. Clark, 1918] (1, Amsterdam Mus.). 



Siboga station 33; Bay of Pidjot, Lombok; 22 meters and less; mud, coral and 

 coral sand; March 24-26, 1899 [A. H. Clark, 1918] (2, Amsterdam Mus.). 



Siboga station 303; Haingsisi, Samau Island; down to 36 meters; lithothamnion; 

 February 2-5, 1900 [A. H. Clark, 1918] (1, Amsterdam Mus.). 



Siboga station 99; anchorage off North Ubian; 16-23 meters; lithothamnion bot- 

 tom; June 28-30, 1899; June 28 and 29 to the west and June 30 to the east of the 

 island [A. H. Clark, 1918] (1, Amsterdam Mus.). 



Siboga station 220; anchorage off Pasir Pandjang, west coast of Binongka, south- 

 east of Celebes; 278 meters; coral sand; November 1-3, 1899 [A. H. Clark, 1918] 

 (2, U.S.N.M., E. 466; Amsterdam Mus). 



