The Ceinoids from Dr. S. Bock's Expedition to Japax l!>14. 109 

 I Br 1—2 3 + 4 5 6 7 8 9 10 + 11 12 13 14 L") Hi 17 



R I 1-2 " zr ~ 



iBr 1—2 3 + 4 5 (J 7 8 9 10+ 11 12 13 



Disk concealed, probably with orals; compare for instance sp. 

 38, 44, 45, 50, 51. 



Sj). 38 (St. 53) The L of the distal pinnulars = 3 br. Rudimen- 

 tary orals. 



Sp. 39 (St. 53) and Sp. 40 (St. 53j The L of the distal pinnulai's 

 on the distal p — s 21/2 br. 



Sp. 41 (St. 45) L of cirral 5-7 = lV/2 br. The L of the distal 

 segments =-= br. A dorsal spine from cirral 10. — B — s projecting IR 

 as small prominences. R — s h =-1^/2 br, in lateral apposition, with a 

 strong longitudinal crista, proximally ending in a blunt spine. I Br — s 1: 

 h = \2 br. I Brax h = ^is br. A slight synarthrial carination. Arms 

 »wall-sided» with small lateral crests out to Br 2. The entire arm 

 with 40 Br — s. A dorsal Br-spine from the 25"^ segment. The distal 

 pinnulars with small spiny whorls in the distal ends, 3'' and 4*'' pin- 

 nular L = 3 br. 



Sp. 42 (St. 45) — Sp. 43 (St. 45) — . 



Sp. 44 (St. 45). The L of the segments of the dorsal cirri 1^2 — 

 2 br. Complete pinnulation. Small orals. 



Sp. 45 (St. 45) Pg wanting. Orals large and well developed, 

 covering ^/s of the radius of the disk. 



Sp. 46 (St. 47) R— s:h = 2/3 br with a dorsal crista. The L of 

 the distal pinnulars of the distal pinnules 2 br. 



Sp. 47 (St. 47) R — s h = 11/2 br. An indistinct median crista 

 on 1 Br I and 2. The L of the distal pinnulars =2i/2 br. 



Sp. 48 (St. 47) R-s h = lV'2 br. The L of the distal pinnulars 

 2V,2 — 3 br. Orals resorbed. 



Sp. 49 (St. 47) R— s: h = br. 1 Br— s 1 and 2 rather smooth. 



Sp. 50 (St. 47) R— s: h > br. A crista on 1 Br 1 and 2 with 

 slight medio-dorsal tubercles. Pg sometimes lacking. The L of the 

 distal pinnulars 2^/2 br. Orals thin, but well preserved, 



Sp. 51 (St. 54) 4"' cirral the longest L = 3 br. Dorsal spine 

 from the 6"' (— 10'^) segment. — R— s h = li/2 br, with a well bor- 

 dered median tubercle. I Br — s 1 and 2 similar, but with a median 

 keel, h^^a and Vi X br respectively. A slighter keel on Br 1 and 2. 



