68 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



about the tenth brachial (P 5 ), having fewer but relatively longer segments. Beyond 

 this point the length gradually increases again, and the later pinnules are slender and 

 delicate, with the two basal segments flattened and somewhat expanded. 



The disk is 8 mm. in diameter and is well plated along the ambulacra, but the 

 interpalmar areas have only a few scattered granules; the brachial ambulacra and 

 interarticular spaces are also well plated. The side plates of the pinnule ambulacra 

 are fairly distinct, with intervening sacculi. 



The color in alcohol is very light brown, the disk darker. 



I examined the two specimens from Challenger station 192 during a visit to the 

 British Museum in 1910. The carination on the earlier ossicles is confined to the 

 axillaries and the second brachials and is rounded and inconspicuous ; the lower brachials 

 and the ossicles of the division series have rather strongly everted edges. 



Dr. Torsten Gislen also examined these specimens. He noted that in one the 

 cirri are XIV, 18-20, and in the other XIV, 19-20. They have a distinct dorsal 

 longitudinal crest, and are arranged in 10 and 8 indistinct columns; there is a weak 

 single opposing spine. 



The specimen from the Danish Expedition to the Kei Islands station 4 has 12 

 arms 65 mm. long; the cirri have 17 segments. 



The specimen from the Danish Expedition to the Kei Islands station 46 has 20 

 arms 120 mm. long, all the IIBr series being present; the cirri have 16-19 segments. 



Localities. Challenger station 192; near the Kei Islands (lat. 549'15" S., long. 

 13214'15" E.); 256 meters; blue mud; September 26, 1874 [P. H. Carpenter, 1888; 

 Bell, 1894; Hartlaub, 1912; A. H. Clark, 1907, 1908, 1909, 1912, 1913; Gislen, 1928] 

 (2, B. M.). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; station 4; 250 meters; 

 sand; April 3, 1922 (1, C. M.). 



Danish Expedition to the Kei Islands; Dr. Th. Mortensen; station 46; 250 meters; 

 May 2, 1922 (1, C. M.). 



Siboga station 302; Timor Sea (lat. 1027'54" S., long. 12328'42" E.); 216 meters; 

 sand and coral sand; February 2, 1900 [A. H. Clark, 1918] (1, Amsterdam Mus.). 



Albatross station 5619; Molucca Passage; March Island (S.) bearing S. 78 E., 

 7 miles distant (lat. 035'00" N., long. 12714'40" E.) ; 795 meters; fine gray sand and 

 mud; November 27, 1909 (1, U.S.N.M., 36025). 



Albatross station 5617; Dodinga Bay, Gillolo Island; Ternate Island (S. E.) 

 bearing S. 45 W., 7 miles distant (lat. 049'30" N., long. 12725'30" E.); 239 meters; 

 November 27, 1909 (5, U.S.N.M., 35976). 



Geographical range. From the Timor Sea to the Kei Islands and northward to 

 Halmahera (Gillolo). 



Bathymetrical range. From 216 to 795 meters; all but one of the six records are 

 from between 216 and 256 meters. 



History. This species was originally described in 1888 by Dr. P. H. Carpenter 

 under the name of Antedon compressa on the basis of two specimens from Challenger 

 station 192 and one specimen together with fragments of a larger individual from station 

 201. The specimen from the latter station is herein referred to Parametra granulata 

 (see page 69). Carpenter said that this species is in some respects a transitional form 

 between Antedon (Perissometra) patula and A. (P.) flexilis on the one hand, and the 



