526 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



The 20 arms are 90 mm. long, the brachials being 1.2 mm. broad. There are 

 14 brachials for each 10 mm., or 11 if the syzygial pairs are counted as units. 



The arrangement of the syzygies is as in the specimen from Bock's station 51. 



P D is 10 mm. long with 35 segments, of which the terminal 8 bear teeth. P! is 

 9.5 mm. long with 31 segments, of which the terminal 6 bear teeth. P 2 , P 3 , and P 4 are 

 of decreasing length, from 4 to 3.5 mm. long, composed of 15-20 segments, of which 

 the last 5 bear teeth. Short combs occur at intervals to the twenty-fifth pinnules, 

 these intervals becoming very large after the fifteenth pinnule. The distal pinnules 

 are 6.5 mm. long with 17 segments. 



The disk is 11 mm. in diameter and is finely papillose. The anal tube is central. 



The color is yellowish red. 



Gisten has given the distribution of the combs on the pinnules on selected arms 

 in his specimens in detail. On an arm arising from a IIIBr axillary in the specimen 

 from Bock's station 51 combs occur on the following pinnules: First to sixth, eighth, 

 tenth, eleventh, fifteenth, seventeenth (the eighteenth and nineteenth pinnules are 

 lacking), twenty-first, twenty-third, twenty-fifth, and twenty-seventh. On the inner 

 side of the same arm they are found on the following pinnules: First to sixth, eighth, 

 tenth, twelfth, fourteenth, sixteenth, seventeenth, nineteenth, and thence usually at 

 longer intervals. 



On an arm arising from a IIIBr axillary on the first specimen from Bock's station 

 45 combs occur on the following pinnules: First to fifth, seventh, ninth, eleventh, 

 thirteenth, fifteenth, seventeenth, eighteenth, twentieth, twenty-second, and twenty- 

 fourth. 



On an arm arising from a IIIBr axillary in the second specimen from Bock's 

 station 45 combs are found on the following pinnules: First to fourth, sixth (the eighth 

 pinnule is broken), tenth, twelfth, thirteenth, nineteenth, twenty-first (the twentieth 

 to the thirtieth pinnules are broken), and thirty-first. 



On an arm arising from a IIBr axillary in the specimen from Bock's station 

 60 combs occur on the following pinnules: First to fifth, seventh, ninth, fourteenth, 

 and twentieth. 



On an arm arising from a IIBr axillary in the specimen from Bock's station 59 

 combs are found on the following pinnules: First; the second and third are usually 

 very small and sometimes without a comb; fourth, sixth (the seventh to eleventh 

 pinnules are broken), fourteenth. On other arms in this specimen not more than 

 from 6 to 8 pinnules on each side of the arm bear combs. 



Localities. Siboga station 282; anchorage between Nusa Besi and the north- 

 eastern point of Timor (lat. 8 25' 12" S., long. 127 18' 24" E.); 27-54 meters; sand, 

 coral, and lithothamnion ; January 15-17, 1900 [A. H. Clark, 1918] (1, Amsterdam 

 Mus.). PI. 62, fig. 175. 



Albatross station 5153; Tawi Tawi group, Jolo (Sulu) Archipelago; 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, 1909, 1912, 1918] 

 (2', U.S.N.M., 25463, 34975). PI. 62, fig. 174. 



Dr. Sixten Bock's expedition to Japan station 45; Bonin Islands, east of Chichi- 

 jima; 164 meters; July 31, 1914 [GislSn, 1922] (1, U.S.N.M., E. 1117). 



