A MONOGRAPH OF THE EXISTING CRINOIDS 151 



mens have 10 arms, three have 11, three have 12, one has 13, one has 14, and one 

 has 15. 



In one of the specimens from Bock's station 16 the cirri are XX, 18-24, from 8 

 to 12 mm. long. The radials are visible as narrow bands. The 11 arms are 45 mm. 

 long. P! is 3.5 mm. long with 10 segments. P 2 is 5.5 mm. long with 15 segments. 

 P b is 4.7 mm. long with 13 segments. P 3 is 4 mm. long with 12 segments. P 4 is 

 2.5 mm. long with 11 segments. The distal pinnules are 6 mm. long with 18-19 

 segments. 



In the other specimen from Bock's station 16 the cirri are XXVI, 20-25, from 7 

 to 8 mm. long. The radials are visible as narrow bands. The 13 arms are 30 mm. 

 long. P! is 2.8 mm. long with 10 segments. P 2 is 4 mm. long with 13 segments. 

 P b is 2.5 mm. long with 10 segments. P 3 is 3 mm. long with 9 segments. P< is 2 

 mm. long with 11 segments. The distal pinnules are 5.5 mm. long with about 18 

 segments. 



In one of the specimens from Bock's station 17 the cirri are XVIII, 20-23 (the 

 shortest with 12 segments), from 7 to 8 mm. long. The 10 arms are 35 mm. long. 

 P! is 3 mm. long with 10 segments. P 2 is 4.5 mm. long with 14 segments. P 3 is 3 

 mm. long with 12 segments. The disk is 4 mm. in diameter. The color, as in the 

 specimens preceding, is white with small and rather sparse violet spots. 



Two other specimens from Bock's station 17 have 10 arms 28 and 32 mm. long. 



In a specimen from Bock's station 6 the free dorsal pole of the centrodorsnl is 



2 mm. hi diameter. The cirri are XXVIII, 22-26, 9 mm. long. The 13 arms are 45 

 mm, long. The distal intersyzygial interval is 3 or 4 muscular articulations. Pj is 3 

 mm. long with 10 segments. P b is about equal to P 2 . P 2 is 5.5 mm. long with 14 

 segments. P 3 is 3 mm. long with 10 segments. P< is from 2 to 3 mm. long with 10-12 

 segments. The distal pinnules are 5 mm. long with about 18 segments. 



In another specimen from Bock's station 6 the cirri are XXV, 19-25, from 10 to 

 11 mm. long. The 10 arms are 45 mm. long. PI is 3. 5 mm. long with 12 or 13 segments. 

 P 2 is 5.5 mm. long with 13 segments. P b is 5.5 mm. long with 14 segments. P 3 is 

 4 mm. long with 12 segments. P c is 4 mm. long with 12 segments. P, is from 2.5 to 



3 mm. long with 10-12 segments. The distal pinnules are 5.5 mm. long with about 

 20 segments. The disk is lost. The color, as in most of the specimens preceding, is 

 yellowish with small sparse crimson spots here and there. 



In another specimen from Bock's station 6 the cirri are XXIX, 19-23, from 8 to 

 10 mm. long. The 12 arms are 45 mm. long. The distal intersyzygial interval is 3 

 muscular articulations. P! is 3 mm. long with 1 1 segments. P 2 is 5 mm. long with 

 15 segments. P b is 4.7 mm. long with 13 segments. P 3 is 2.5 mm. long with 10 

 segments. P t is 2.3 mm. long with 10 segments. The distal pinnules are 4.5 mm. 

 long with 18 segments. 



Another specimen from Bock's station 6 has the cirri XXVII, 18-27, from 7 

 to 11 mm. long. The 10 arms are 52 mm. long. The distal intersyzygial interval is 

 3 muscular articulations. PI is 3.2 mm. long with 11 segments. P 2 is 5 mm. long 

 with 16 segments. P b is 4.5 mm. long with 13 segments. P 3 is 3 mm. long with 11 

 segments. P 4 is 2.7 mm. long with 11 segments. The distal pinnules are 5 mm. 

 long with 18 segments. 



In another specimen from Bock's station 6 the cirri are XXVIII, 19-22, from 7 



