The Ceinoids from Dr. S. Bock^s Expedition to Japan 1914. 151 



3 + 4, 18 + 19) 5 cases, 21 (:5 + 4| 1 case, 22 (3 + 4, 13 + 14 or 3 + 4, 

 15 + 16) 2 cases, 24(3 + 4, 15+16) 1 case; 10-17.:. mm. N' Br-s 

 13(3 + 4) 1 case. — Aims LXXIV. Total length 135 mm. Free arm- 

 length after I\' Brax 75 mm. The arm-part with rudimentary p-s 35 mm. 



Pj (to the right on 1 Br 2 in 5 eases) 10; 13 mm., P., 14: 17 

 mm. Distal p. 13; 11 — 12 mm. Disk 10 mm. Anal cone 7 mm. 



S2). 8 (St. 56) 15 internocies, 100 mm. Internodal joints 11: 3 

 cases, 12: 3 cases, 13: 6 cases; 9 — 13 mm. Interarticular pores to the 

 7"^ internode. 3 proximal nodals without cirri. Full number of inter- 

 nodals at the 4* internode. Diameter of the stem 2,5 — 2,8 mm. 



Cirri 3S (VI) 28 mm., 37 (VII) 29 mm., 30 (IX) 30 mm.. 34 (XI) 20 

 mm., 36 (XIII) 21 mm., 35 (XV). Cirri extending over 2 internodes. 



B— s 1 X 2 mm. R— s 1 X 3 mm. I Br-s 4 (1 + 2); 6 mm., in 



4 cases. II Br-s 7 (2 + 3); 6 mm. in 1 case. Ill Br-s 11 (3 + 4) 2 cases; 



9 mm. rv Br-s 1 1 (3 + 4) 1 case, 15 (3 + 4) 1 case, 21 (3 + 4) 2 cases. 

 The other arm-divisions broken. Total L of the arms 80 mm. Free 

 part from a III Brax 55 mm. Part of the arm with rudimentary p-s 

 about 10 mm. Ex. of syzygies: 4 + 5, 24 + 25, 34 + 35.. 



Pi (to the right in 2 cases of 4» 12—14; 10—11 mm. P., 15; 11 

 mm. Distal p-s 11; 6 mm. 



S/). 9 (St. 58) 14 internodes. 100 mm. Number of internodals 

 6 — 11; 5,5 — 10 mm. Interarticular pores to the 6"' internode. Diame- 

 ter of the stem 0,8— 1,6 mm. Number of internodal joints, counted proxi- 

 mo-distally (from the chalice), are: 0, 0, 0, 1, 3, 7, 9 (0 mm.) 10 (8,2 

 mm.) 11 (0), 10 (S), 11 (9), 10 (8,5), 9 (7), 7 (5,5), 6 (5), 11 (10), 10 (9). 

 Stem smooth. 



Cirri 20 (VII) 18 mm., 25 (X) 10 nnn., 23 (XIII) 14 mm., 21 (XV). 

 From the 4'" segment the L of the segments are = l'/2 br, last 7 seg- 

 ments L = br or shorter. A dorsal spine scarcely developed. Cirri 

 extending over 2 internodes. 



I Br-s 4(1+2) in 4 cases, 5(1 + 2 3 + 4) 1 case; 5 mm. II 

 Br-s 7 (2 + 3) 5 cases, 8 (1+2, 4 + 5 or 2 + 3, 6 + 7, the former con- 

 dition in 1 case, the latter one in 3) 4 cases; 6 mm. Ill Br-s 11 (3 + 4: 

 8 cases. 2 + 3: 1 case) 9 cases, 13 (3 + 4) 7 cases, 15 (3 + 4) 2 cases; 

 8—10 mm. 1\' Br-s 11 (3 + 4) 1 case, 13 (3 + 4) 12 cases, 14(3 + 4, 



10 + 11 ) 1 case, 15 (3 + 4) 3 cases, 17 (3 + 4) 7 cases, 19 (3 + 4) 1 case; 

 6—7 mm. Arms LXll +, total length 30 mm. Free L after a III Brax 



