A MONOGRAPH OF THE EXISTING CRINOIDS 383 



In a fourth specimen from station 34 the cirri are XXII, 25-31, from 14 mm. 

 to 20 mm. in length. The arms are about 20 in number, 90 mm. long, with about 

 130 brachials of which the last 30 or so show a slight median carination. The inter- 

 syzygial interval is from 4 to 10 muscular articulations. PI is 5.5 mm. long with 

 18 segments. P 2 is 9.5 mm. long with 17 segments. P 3 is from 8.5 mm. to 9 mm. 

 long with 16-17 segments. P 4 is 9.5 mm. long with 16 segments. P 9 is 6 mm. long 

 with 13 segments. The distal pinnules are from 9 mm. to 10 mm. long with 17 

 segments. The disk is regenerating, and is from 3.5 mm. to 7 mm. in diameter. 



A fifth specimen from station 34 has the bare dorsal pole of the centrodorsal 

 2 mm. in diameter. The cirri are XIX, 25-35, from 14 mm. to 18 mm. long. 

 There are about 16 arms 45 mm. in length. P, is 4.5 mm. long with 15 segments. 

 P 2 is 7 mm. long with 17 segments. The distal pinnules are 8.5 mm. long with 14 

 segments. P a is small, from 3.5 mm. to 4 mm. long. P b and P c are about 9 mm. 

 long, and are composed of 17 segments. The disk is in process of regeneration. 



Gisl^n has noticed that the interraclial processes of the radials are most marked 

 in the youngest individuals, the IB^ then increasing rapidly in size and soon coming 

 into contact with each other laterally. In the largest individuals the IBr axillary is 

 almost rhombic, and shows a variable development of carination. He remarks that 

 in the fourth specimen from station 34 the carinate processes on the first two seg- 

 ments of the proximal pinnules are distinct out to about the tenth pinnule, and still 

 noticeable on the distal pinnules. 



Remarks. Though this species has been dredged 12 times off southern Japan 

 in 115 to 365 meters, and Neometra multicolor has been found 31 times in the same 

 region between 20 and 600 meters, the two species have been dredged together only 

 once, by Alan Owston at a depth of 201 meters. 



Although the bathymetric range of tliis species falls wholly witliin that of Neo- 

 metra multicolor, so far as is at present known, the average of the records is 202 meters 

 as against 114 for the latter. 



Calometra callista has never been found with this species, though it inhabits the 

 same region and its average depth of habitat is 181 meters, as compared with 202 

 meters for tliis form ; but at three of the seven stations from which Calometra callista 

 has been reported (Albatross stations 4836 and 4894 and the Golden Hind station) it 

 was found associated with Neometra multicolor. 



Localities. Albatross station 4935; Eastern Sea, off Kagoshima Gulf; Sata 

 Misaki light bearing N. 58 E., 4.5 miles distant (lat. 3057'20" N., long. 13035'10" 

 E.); 188 meters; temperature 15.89 C.; stones; August 16, 1906 [A. H. Clark, 1907] 

 (2, U.S.N.M., 22623, 35513). 



Albatross station 3717; Sagami Bay, Japan; Ose Zaki bearing S. 34 E., 0.8 mile 

 distant; 115-183 meters; volcanic sand, shell and rock; May 11, 1900 [McClendon, 

 1906] (3, U.S.N.M., 35511; M. C. Z., 263). 



Sagami Bay (lat. 3503' N., long. 13847' E.); 155 meters; Alan Owston, August 

 14, 1902 [A. H. Clark, 1908] (1, U.S.N.M., 35520). 



Sagami Bay (lat. 3503' N., long. 13847' E.); 201 meters; Alan Owston, August 

 28, 1902 [A. H. Clark, 1908] (1, U.S.N.M., 35521). 



Sagami Bay (lat. 3504' N., long. 13847' E.); 201 meters; Alan Owston, August 

 6, 1902 [A. H. Clark, 1908] (5, U.S.N.M., 35519). 



