360 CLARK. 



lighter in the dry specimen than it is in life. The variety has previ- 

 ously been reported only from Cuba and the Tortugas. 



Ophiothrix angulata var. poecila. 



H. L. Clark, 1918. Bull. M. C. Z., 62, p. 319. 



There are four quite typical examples of this variety, all dry and 

 showing the usual variegated coloration well. A fifth and larger 

 specimen, 6 mm. across the disk, is in alcohol, and has lost all dis- 

 tinctive coloration, but the disk-covering and arm-spines and plates 

 are as in the smaller specimens. As there is no indication of a white 

 longitudinal stripe on the arm, it seems best to consider this specimen 

 also as poecila, although it is not at all unlikely that it represents the 

 red-orange form which I have called var. phhgina (1. c, p. 318). 



Ophiothrix suensonii. 



Liitken, 1856. Vid. med., p. 16. 



This very handsome and easily recognized species was taken at the 

 Bank by the Challenger and again by the party from the Bermuda 

 Biological Station. The latter secured four specimens, of which the 

 largest is 7 mm. across the disk and has the arms over 50 mm. long. 

 V»rrill (1900, Trans. Conn. Acad., 10, p. 585) reports that this species 

 was taken by G. Brown Goode at Bermuda, but it is more than likely 

 that the specimen secured by Goode was from "off shore." For 

 neither Verrill himself, nor the New York University parties, nor the 

 Bermuda Biological Station collectors (and they have been many!) 

 nor myself, have ever found suensonii at Bermuda. 



Ophiocoma pumila. 



Liitken, 1859. Add. ad Hist. Oph., pt. 2, p. 141. 



A single very small 6-rayed specimen with disk about 4 mm. across 

 was taken in 1903. As the species is very common at Bermuda, it 

 would be strange indeed if it did not occur on Challenger Bank. 



Ophiocoma riisei. 



Liitken, 1859. Add. ad Hist. Oph., pt. 2, p. 141. 



This species is also common at Bermuda and hence its occurrence 

 at Challenger Bank would be expected. But the only specimen as 



