The Crinoids from Dr. S. Bock's Expedition to Japan 191 -i. 1-37 



(:î + 4) 1 case; 19—28 mm. IV Br-s 13(5 + 6) 1 case, 17(3 + 4 or 

 3 + 4, 12 + 13) 2 cases, 18 (3 + 4, 14 + 15) 1 case, 19 (3 + 4 or 3 + 4. 

 <) + 10. 15 + 16) 2 cases, 20 (3 + 4, 9 + 10 or 3 + 4, 15 + 10 or 3 + 4, 

 16+17 or 3 + 4, 17 + 18) 4 cases, 22 (3 + 4, 19 + 20 or 3 + 4, 20 + 21) 

 2 cases, 24 (3 + 4, 17 + 1S( 1 case, 25 (3 + 4, 12 + 13, 20 + 21) 1 case, 

 26 (3 + 4, 22 + 23) 1 case, 28 oi- 29 (1 2 (3) + 456 + 78..)! case (the 

 3'' segment rudimentai-y); 17 — 32 mm. Arms LVI, total L 175 mm., 

 a regenerated part only 140 mm. The undivided part of the arm 

 75—110 mm. Example of the decrease in tlie number of pinnulars: 

 13, 10, 10, 8, 7. 5, 4, 4. 3, 3,.. (7—1,5 mm.). 



P, (to the right on I Bi' 2 in 4 cases of 5) 22—24: P- (on II 

 Bi- 5) 15; 15 nnn. Pj5 17; 12 nmi. 



Sp. 4 (St. 32) 28 internodes, 460 mm. 3 nodal joints without 

 cirri. Full lunnber of internodals at the 6*'' internode. Internodal joints 

 1 1 : 14 cases, 12 : 8 cases, 14:1 case; 14 — 17 mm. (distally the shortest 

 indernodes). Interarticular pores to the 9"' internode. Diameter of 

 the slem 6,7 — 6,o mm.! (Thus a more slender stem proximally. Slight, 

 incomplete ridges on the internodals.) 



Cirri 45 (VII), 44 (XII), 43 (XV), 45 (XXV); 46-49 mm. Extending 

 over 2' /2 — 3 internodes. 



B-s 2 X 6 mm. R-s 2x7 mm. I Br-s 7 (1 + 2, 4 + 5: 4 cases; 

 1 + 2, 3 + 4:1 case) 5 cases; 18—19 nnn. II Br-s 6 : 1 case, 7 (3 + 4; 

 1 case 4 + 5) 9 cases; 13 — 15 mm. Ill Br-s 11 (5 + 6) 1 case, 13 

 (3 + 4: I ease 5 + 6) 9 cases, 15 (3 + 4) 5 cases, 17 (3 + 4:2 cases, 



1 + 2. 4 + 5. 14+15: 1 case) 3 cases, 19 (3 + 4) 1 case, 20 (3 + 4, 

 17+18) 1 ease; 19—26 mm. IV Br-s 18(3 + 4, 7 + 8) 1 case, 19 

 (3 + 4, 7 + 8, 15 + 16 or 5 + 6) 2 cases, 20 (3 + 4 or 3 + 4, 16 + 17) 



2 cases, 22 (3 + 4, 9 + 10 or 5 + 6, 18 + 19) 2 cases, 24 (6 + 7) 1 

 case, 30 (3 + 4, 18 + 19) 1 case; 19—25 mm. Arms XLIX, total L 185 

 mm, Free arm-length 90 — 120 mm. A lot of new regenerated arms. 

 Ex of syzygies: 3 + 4. 23 + 24 . . . 



P, (to the right on I Br 2 in 3 cases of 5) 18—19; 24 mm, P., 

 17; P, 18; I\, 18: 15 mm. 



One radial branch shows an irregular pinnulation; 



