The Ckinoids from Dr. S. Bock's Expedition to Japan 191-i. 17)3 



mm.; last 5 mm:s with rudimentary p — s. The new arms on tlie inside 

 of III Brax very short, about 1 mm. (the main arm from the same III 

 Brax 5 mm.) An outer ramification in one case shorter, thougli wilii 

 normal pinnulatlon, elsewhere always shorter branches on the inside. 

 Example of arm-branching: 



I Br . . ;3 + 4... 12 5 mm. 

 III.. 3 + 4... 10+ II.. U 



I Br 12 3 4 5 1 mm. 



Br.. 3 + 4... 12 + 13 . . 



')') 



Pi (to the right on I Br 2 in 4 cases) 9; 4,5 mm. P.^ 9; P3 10; 

 l\ 10: 5 mm. 



Disk 2 — 3 mm. in diameter with calcareous plates. No orals. 



Sp. 18 (St. 58) 3 nodals without cirri. Full number of inter- 

 nodals in the 4*'' internode. Interarticular pores to the 7"' internode. 



Cirri 32 (VI) 21 mm., 30 (VIII) 19 mm. 4"^ segment cubical. 



I Br— s 7 (1 + 2, 4 + 5:3 cases; 1 + 2, 3 + 4: 2 cases) 5 cases; 

 8 mm. II Br— s 9 (3 + 4) 4 cases, 11 (3 + 4: 4; 2 + 3: 2) 6 cases; 

 8—10 mm. Ill Br— s 11: I case, 13: 7 cases, 15: 2 cases. 17: 7 cases, 

 18 (3 +4) 1 case, 19: 2 cases, everywhere the syzygies 3 + 4; 8 — 12 

 mm. Arms XL, total L 55 mm. Rudimentary p — s on the last 12 — 

 15 mm. 



Pj (to the right on I Br 2 in 4 cases) II; 7 mm. P3 II; 5 mm. 

 Br — p. 9; 5 mm. 



To this species probably also belongs *S^). 19 (St. 9) 3 nodals with- 

 out cirri. Full number of internodals in the 6"' internode. Interarticular 

 pores to the 10"' internode. The segments are rounded with a slight 

 ring-ridge. Distally of the fixing point for the cirral there is a slight, 

 swollen ridge effaced at the middle. The cirrus-socket extends up 

 over the distal part of the supranodal but does not reach the infra- 

 nodal joint. 



Cirri 43 (XI) 45 mm., 40 (XVIII) 40 mm. Extending over 2— 

 2 V* internodes. 



B— s 1,8 X 3,7 mm,, laterally not contiguous, except on the super- 

 numerary side. There are 6 R— s. 



I Br— s 4 (1 + 2) or 1 + 2 3 4 +; the other ones broken in the 

 1" syzygy. 



