The Crinoids from Dr. S. Bock's Expedition to Japan 1914. 107 



total L. 130 mm. Unbranched arms 100 mm., 30-40 mm. with rudi- 

 nentary p— s. 



Pj (to the right on I Br 2 in 4 cases) 19; many p — s with encys- 

 ted Myzostomas. 



Sp. G (St. 45) 4 nodals without cirri. Full number of internodal 

 joints in the 5"' internode. Interarticular pores to the 9"' internode. 

 Stem somewhat more rounded and smoother than in the preceding- 

 specimens. 



Cirri 43 (X) 37 mm., 44 (XII) 40 mm., 42 (XV) 38 mm. First 

 cirrals short, L = Vs br. 



I Br-s 5 (1+2, 4 + 5) 1 case, 7 (1+2, 4 + 5) 4 cases; 9—11 

 mm. II Br-s 9 (3 + 4) 5 cases, 11 (3 + 4) 5 cases; + 10 mm. Ill and 

 IV Br-s bent down, impossible to count. Arms XLIV, total L 110 mm.. 

 Unbranched part of the arms 80 mm. 



Pi (to the right on I Br 2 in 4 eases) 14—17; 12 — 13 mm. 

 Pa 16—19; P3 10; 10 mm. Br-p. 13; 7 mm. Disk 10-12 mm. Anal 

 tubus 4 mm. 



»S^;. 7 (St. 45) nodal joints without cirri. Full number of inter- 

 nodals in the 4"^ internode. Average height of internodal joints 1,3—1,5 

 mm. A slight intercirral tubercle to about the XV^ node. The distal 

 face of the nodal joint lobated. Ring-ridge inconspicuous. Interarti- 

 cular pores to the 8*'' internode. 



Cirri 41 (VI) 35 mm., 42 (IX) 37 mm., 41 (XI) 34 mm., 41 (XIV) 

 30 mm., 39 (XVII) 35 mm., 40 (XIX) 34 mm. 



B — s 1,3 X 2 mm, contiguous. R — s 2X4 mm, I Br-s 7 (1 + 2, 

 4 + 5) 5 cases; 12 mm, II Br-s 11 (3 + 4) 10 cases; 14 ram. Ill Br-s 

 11 (3 + 4) 3 cases, 13 (3 + 4) 3 cases, 15 (3 + 4) 4 cases, 17 ( 3 + 4) 

 3 eases, 19 (3 + 4) 5 cases, 21 (3+4) 2 cases; 11-19 mm. IV Br-s 

 13 : 1 case, 15 : 2 cases, 17 : 1 case, 21 : 1 case, all with a syzygy 

 between 3 + 4; 12 — 14 mm. Arms XLV, total L 115 mm. Unbranched 

 part of the arm 75 mm.. Syzygies with an interval of 17 — 25 oblique 

 articulations. 



Pj (to the right on I Br 2 in 4 cases) 16; 14 mm. Br-p, 13; 

 7 mm. 



Sj). 8 (St. 45) 3 nodals without cirri. Full number of interno- 

 dals in the 5"' internode, Interarticular pores to the 9*'^ internode. 

 Infranodal joint rounded. The segments are remarkably smooth and 

 rounded. 



