The Ceinoids from Dr. S. Bock's Expedition to Japax I!» 14. 10 



In some exceptional cases Br 1+2. 3 + -1 on the inner side of tlie 

 divisions. Syzygies distally with an intei'\al of 5 — obliqne joints. 

 Arms XN'llI. 80 mm. 17 — IS segments pr. em. (14 — 15 if tiie syzygial 

 pairs are connfed as units). Segments short, longest side L = ^/4 X lir. 

 The breadtii of the segments O.s — 1,4 mm. 



p^_Pj. or P,; with combs. . Pj 4- 37 (17— iSTj 9,ô mm., P3 + 35 

 (-20T) 6,.-. mm. \\ 37 (Teeth from 11"' segment), P5 ± 30 (T from 

 12"' segmenfl. P,; 2S (I.") T| nr 17 without a comb. -1,5 mm. Teeth tole- 

 rably high, nari'ow. Ii = -/3 of (he br of the segments. P^ 10, P^ 15; 

 4,2 mm. Segments not longer than broad. Proximal segments knobby 

 and spiny, distally widened, not as in Carpenter's figure with a small 

 wing-like process but with a longitudinal spiny crista. Distal p. 18 — 20; 

 5 mm. The last 4 — 5 segments on each p. with paired dorsal hooks. 



Disk 10 nun. Anal funnel 2.5 mm. Mouth and anus sub-central. 

 Disk smooth without incrusted granules. 



Sp. 2 (St. 59) C. XX 14 — 18, (i — 12 mm. in a whorl only partly 

 double. 



Arms X\T 05 mm. (VI young regenerated arms). Syzygies most 

 often 1—2, 3 + 4 . . 



Pj— P^ with combs. Pj 31 (15 T) mm., P.^ 30 (17 Tj 5 mm.. P^ 

 23 (14 T) 4,2 mm. Teeth narrow, pointed. Pj 13; 4 mm. Distal p. 

 10; 5 mm., with snuill spines. The proximal parts of the arms some- 

 what smoother than in the pi-eceding specimen. 



Example of the arm-ramifications and distribution of syzygies in a 

 somewhat abnormal arm. 



I 1-2 



Br 1—2 3 + 4. . 10- 17 



25 - 20 



32 -^ 33 . . . 38 + 39 . . . 



II 1 + 2 



I Br 1+2... 10+ 17... 23 + 24... 29 + 30... 35 + 30 



Br 1—2 3 + 4... 17 + IS... 22^23.. 20 + 27... 31+32 



To this species 1 have also referred a X-armed specimen differing 

 chiefly only by being smaller than the ones described above. 



Sp. 8 (St. 50) Cd very slight vaulted, 1 mm. C. XXV (III of them 

 very small): 13 (D) 10 (^'), (! — nun., usually in two whorls, l"*^ and 

 2* segments short; 3" one L = 1 '/2 br, a little hour-glass-shaped, 5"' and 

 O*'' segments L = 2 X br w ith widened distal parts, 6*'' segment with a 



