88 Clark — A New Crinoid from the Indian Ocean. 



ends all around finely spinous; the short outer segments are carinate, 

 this carination appearing convex in lateral view. 



The ten arms are 130 mm. long; the i Br series and brachials are essen- 

 tially as in Antedon bifida, but the distal ends of the brachials are more 

 prominent and are finely spinous. Syzygies occur between the third and 

 fourth brachials, again between the ninth and tenth and fourteenth and 

 fifteenth, and distally at intervals of three or four oblique muscular 

 articulations. 



Pi is very long, 17 mm. to 11* mm. in length, with from forty-two to 

 forty-five segments, of which the first seven are broader than long, and 

 the distal slightly elongated; P2 is apparently similar, but shorter; P3 

 1 tears a genital gland. The distal pinnules are exceedingly slender, 17 mm. 

 long. 



The color in spirits is yellow. 



Locality. — South of Ras Sharwein, Arabia; or, northwest of Sokotra 

 ( 14° 20' N. lat., 52° 30' E. Long. ) ; 1200 fathoms. 



Remarks. — The type of this species, which was collected by the cable 

 repair ship Electra, is in the British Museum. 



The following species should also be referred to this new genus: 



Cyclometra clio (A. H. Clark). 



Antedon clio 1907. A. H. Clark, Proc. U. S. Nat. Mus., Vol. 33, p. 79. 

 Habitat. — Southwestern Japan. 

 Depth. — 107 fathoms. 



