The Cbinoids from Dk. S. Bock's Expedition to Japan I!» 14. NI 



similar to that of I Bi- 2. Joints after Br 10 triangular, smooth. Sj'- 

 zygies: 3 + 4, (9+10), 15 + 16, 21+22, distally with an interval of 

 usually 3 — 4 oblique articulations. 



Pj 11 — 12; 4,2 mm. (l"*' and last segments short, the other ones 

 L = 2 — 2V2 br, smooth cirrals), Pg 11; 4 mm. (Distal segments slightly 

 swollen and spiny), P.^ 8—9; 2,2 mm., P^ still a little shorter, then 

 again longer p — s. Distal p + 13; 3 mm. (P* and 2'' segments some- 

 what stouter than the following ones), P.^ usually absent. The proximal 

 pinnules are stiff. 



Colour (on preserved material) yellow-brown. Cirri white. Disk 

 2,.5 mm., finely papillons. Anal cone narrow, L = 0,8 mm. 



Sp. 2 (St. 11) C. XXXll 15-16 (D), 25-28 (V); 2,5 and 7 mm. 

 respectively. 



I Br 1 with 3 small lateral tubercles on each side. Arms X, 

 broken. After Br 7 wedge-shaped segments. Ex. of syzygies: 3 + 4, 

 9 + 10, 14+15. 



Pj 9; 3,5 mm. (Distal segments slightly collar-shaped and a 

 little spiny). P2 8; 2,5 mm. Similar to- P^; P3 9, about as long as Pg. 

 P., absent. 



Disk with large calcareous granules also interbraehially, where 

 the perisome reaches to Br 4. Colour salmon-red. Cirri white. 



Sp. 3 (St. 11) The free dorsal surface of Cd small-grained, O.s 

 mm. C. XI\' 17 — 19 in a single whorl. 4"^ segment the longest, with 

 a dorsal tubercle, which at the 7*'' segment passes over to a stout 

 dorsal spine, less developed on the antepenultimate segment. 



Arms X, broken. Syzygies with an interval of 3—4 oblique 

 articulations. 



Pj 11; 3 mm. P., 11; 4,2 mm. (the distal borders of the pinnu- 

 lars with small spines), P3 9; 3 mm., P^ 10; 2 mm., P^ absent. 



Colour white, with pale pink spots on the arms. 



Though the above-described specimens differ from Erythrometra 

 rubra by having almost smooth arm-bases and proximal pinnules, I 

 have referred them to this species, as the other characteristics coin- 

 cide, and considered the differences to be ascribable to different ages 

 in my specimens and those described of A. H. Clark. 



A. H. Clark originally called the species Antedon riibei-. When 

 a little later he created his new classification of the Comatulids and 



