The Crinoids from Dr. S. Bock's Kxpedition to Japan 1914. 117 



distinctly flatleiunl latoiaily out tu lie .">. Syzygies with an interval of 

 !:i — 10 oblique articulations. P, 13-15; ."),,, — 7.. nun. P., !) — 11; 4,5—5 

 nun. P3 8 — 9, 4 — 5 mm. Distal p-s 11: o mm. 



Sp. 4 (8t. 50| C. XXI 4;} — 57: 18 — + 22 mm. The (i lirst ciirals 

 with a real ventral spine. Dorsal s|)ine h'om about tlie lO*^'' — 20"* seg- 

 ment. Arms XV. 45 mm. The median keel on 1 Br 2 somewhat lower 

 than in Sp. I. Arms after Br (i witlidul lateral prominences. The dor- 

 sal Br-spiiic low. Syzygies with an inlei'val of 5 — IS oblique articula- 

 tions. About 90 Br segments. The distal segments \\ith rudimentary 

 p-s are about 5. Kxample of arm-l)i'anching: 



I 15r 1—2 3 + 4 35 + 30 50 + 59 . . 



I 11 1-2 I 



I Br 1—2 3 ->- 4 33 -' 34 . . 44 + 45 . . 53 -r 54 . . 



1 1—2 



I Br 1—2 3 + 4 29 I 30.. 



11 1—2 



I Br 1—2 3 + 4 30 + 31 .... 43 + 44 . 



Pi 12; 4 mm. (last 8 segments collar-shaped, their distal parts 

 overlapping; a similar condition, though not so marked on Pg — P^). 

 P.J 9: 3.5 mm. P3 9: 3 mm. Pj 8: 3 mm. Distal [>. 12; 5,5. mm. 



Sp. 5 (St. 50) C. Will 54—05: 25—30 nun. Arms XV, 00— <>5 

 mm. A regenerate from a II Br 1 with 2 small, still smooth arms, 

 P, 8 — 13; 4—0 mm. 1\ 8; 4 mm. P3 7; 3 mm. Distal p. 9 — 10; 0,5 mm. 



Sp. 6 (St. 59) C. XVIII 02—05; 24—28 mm. Arms XVI, broken. 

 11 Br-s: 2. \\ 13: 5 mm. Disk (> nnn. 



Sp. 7 (St. 59) ('. X\'1I 53 — 0(»: 23— 2S nun. Arms X\' +, broken. 

 II Bi-s: 2. P, 13; <i nun. Disk 7 mm. 



,S/^ 6' (St. 59) ('. XI\' 40-43; 15— IS mm. in a |iai'lly double 

 whorl, hardly divided in groups. The dorsal suifacc of <'(l 1 nun. — 

 Arms XII, 40 mm. The cab^arcdus lamcis 011 tlir |iro.\imal ossicles 

 only slightly serrate. A single dorsal spine Worn Br 8. Syzygies with 

 an interval of 5 — S obliciue articulations. Kxample: 



