382 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



18 + 19, 26+27; in the arm arising directly from the IBr axillary, between brachials 

 3 + 4, 11 + 12, 17 + 18, 22+23, 27+28, 32 + 33. 



P, is about 4 mm long, much more slender than those following, with 13 segments 

 of which the first 2 bear carinate processes; the first segment is 3 times as broad as 

 long, the second is two and one-half times as broad as long, and the third is about as 

 long as broad; the distal segments are slender and longer than broad. P2 is 4.2 mm. 

 long with 10 segments. P3 is 3.7 mm. long with 9 segments. P4 is 3.8 mm. long with 

 9 segments, the carinate processes on the first 2 being insignificant. The distal pin- 

 nules are 6.5 mm. long with 15-16 segments of which the first and second are short and 

 somewhat expanded, those following are smooth, three or four times as long as broad, 

 and the last three are slender with spiny distal ends. 



A specimen from station 35 has the centrodorsal 3 mm. in diameter with the bare 

 dorsal pole 2.5 mm. in diameter. The cirri are XX, 25-30, from 14 mm. to 18 mm. 

 long, arranged in 5 interradial groups which are separated by radial interspaces. The 

 radials are not very much produced interradially. The 17 arms are 65 mm. long, and 

 are composed of about 100 brachials, which are slightly overlapping with serrate ends. 

 The intersyzygial interval is from 4 to 6, sometimes as much as 11, muscular articula- 

 tions. P, is from 4 mm. to 5.2 mm. long with 14-15 segments, of which the third is 

 half again as long as broad. Pj is from 6.8 mm. to 7 mm. long with 14 segments of 

 which the fourth-tenth are from two to two and one-half times as long as broad. P3 is 

 6.5 mm. long with 13 segments, stouter than the 2 preceding. P4 is 4.7 mm. long with 

 9+ segments. The first 2 segments bear carinate processes as far as P7. The distal 

 pinnules are from 7.5 nun. to 8 mm. long with 15-17 segments. The disk is 5 mm. in 

 diameter, and is covered with closely packed granules. 



In a specimen from station 34 the centrodorsal is 2.3 m. in diameter, with the 

 bare dorsal pole 1.8 mm. in diameter. The cirri are XX, 22-31, from 9 mm. to 17 

 mm. in length, indistinctly separated into groups. The radials have small inter- 

 radial processes. The 18 (? or 19) arms are 75 mm. in length. Pi is 5.5 mm. long 

 with 18 segments. Pj is 8 mm. long with 19 segments. P3 is 8.5 mm. long with 17 

 segments. P4 is 8 mm. long with 15 segments. The distal pinnules are from 9 mm. 

 to 9.5 mm. long with 15-16 segments. 



A second specimen from station 34 has the centrodorsal 3.2 mm. broad with the 

 bare dorsal pole 2.5 mm. across. The cirri are XXIII, 29-33, from 14 mm. to 18 

 mm. long. The arms, about 20 in number, are 85 mm. long. The radials are not 

 very much produced interradially. The IBri are in contact basally. The inter- 

 syzygial interval is from 11 to 14, rarely as few as 6, muscular articulations. Pi is 

 composed of 19 segments. P2 is 9.5 mm. long with 21 segments. Pio is 6.2 mm. long 

 with 13 segments. The distal pinnules are from 9 mm. to 9.5 mm. long with 15 

 segments. 



In a third specimen from station 34 the centrodorsal is 4 mm. across with the 

 bare dorsal pole 3 mm. in diameter. The cirri are XXII, 27-37, from 17 mm. to 

 24 mm. long. The cirrus groups are well separated interradially. The IBr axillary 

 is twice as broad as long, and almost without a median tubercle. There are about 

 20 arms. Pi is 7 mm. long with 22 segments. The disk is coarsely granulated and 

 strongly incised, with the greatest diameter 8 mm. and the least 4 mm. 



