450 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 88 



OPHIONEREIS RETICULATA (Say) 



Localities. — Smithsonian-Hartford station 12, Haiti (1, E.5469). 

 Station 16, Haiti (1, E.5470). 



OPHIONEREIS SQUAMULOSA (Koehler) 



Locality. — Smithsonian -Hartford station 12, Haiti (3, E.5466, 

 E.5467, E.5468). 



OPHIOCOMA ECHINATA (Lamarck) 



Plate 54, Fiqube 4 



Localities. — Smithsonian-Hartford station 12, Haiti (20, E.5498, 

 E.5499, E.5500, E.5501, E.5502, E.5503, E.5504, E.5505, E.5506, E.5507, 

 E.5508, E.5509, E.5510, E.5511). Station 15, Haiti (2, E.5513, 

 E.5514). Station 16, Puerto Rico (2, E.5484, E.5485). Station 17, 

 Puerto Rico (5, E.5486, E.5487, E.5488, E.5489, E.5490). Station 

 23, St. Thomas (5, E.5493, E.5494. E.5495, E.5496, E.5497). Station 

 28, St. John (17, E.5479, E.5480, E.5481, E.5482, E.5483). Sta- 

 tion 56, Barbados (5, E.5491, E.5492). 



Notes. — In the specimen from station 17, Puerto Rico (E.5522) 

 (pi. 54, fig. 4) has the disk 4.5 mm in diameter and the arms 16.5 nmi 

 long. In an individual of this size there are 2 tentacle-scales in 

 the proximal half of the arm, but only one in the distal half. The 

 aboral surface of the disk is densely covered with small spinulose 

 granules, which are somewhat higher than thick, but there are no 

 granules on the oral surface. Five or six of the uppermost arm 

 spines on each side of the basal portion of the arm, situated on alter- 

 nate side arm plates beginning with the third, are much swollen 

 and stand nearly vertically. The presence of 5 arms, granules on 

 the disk, 2 tentacles scales in the proximal half of the arm, and 

 markedly swollen upper arm spines make the young of this species 

 easy to recognize. 



OPHIOCOMA RUSEI Liltken 



Plate 54, Figure 5 



Localities. — Smithsonian-Hartford station 12, Haiti (4, E.5515, 

 E.5516, E.5517). Station 17. Puerto Rico (1, E.5522). Station 28, 

 St. John (1, E.5520). Station 66, St. Thomas (3, E.5518, E.5519, 

 E.5521). 



Notes. — In the specimen from station 17, Puerto Rico (E.5522) 

 (pi. 54, fig. 5), the disk is 3.5 mm in diameter and the arms are 

 about 15 mm long. There are no granules on the disk, which, except 

 for its very dark color, recalls the disk of an AmpMura. The im- 



