132 BULLETIN 84, UNITED STATES NATIONAL MUSEUM. 



Family OPHIOMYXID^. 



OPHIOMYXA FLACCIDA (Say). 



See for bibliography: 



Studer (83), p. 29, pi. 3, fig. 14. 



Ives (89), p. 178. 



Verrill (99), p. 65. 



H. L. Clark (01), p. 340. 



Kcehler (07), p. 441. 



Verrill (07), p. 329. 



Koehler (13), p. 379. 



Key West, Florida. Thirteen specimens. 

 Tortugas, Florida. Three specimens (one dry). 

 New Providence, Bahamas. Two specimens. 

 Santa Lucia. One specimen. 

 St. Thomas. One dry specimen. 



O.Jlaccida is widely spread along the coasts of Florida down to Brazil, in the 

 West Indies, Bermudas, etc. 



OPHIODERA STIMPSONII iLymn). 



Ophioscolex stimpsonii LYMAN (76), p. 23, pi. 1, figs. 11-15. 



Ophioscolex stimpsonii LYMAN (82), p. 234. 



Ophiodera stimpsonii VERRILL (99), p. 67, pi. 2, figs. 4-4a. 



Albatross station 2146. Apr. 2, 1884. Lat. 9 32' N.; long. 79 54' 30" W.; 

 34 fathoms; brk. sh. One specimen. 



Albatross station 2663. May 4, 1886. Lat. 29 39' N.; long. 79 49' W.; 421 

 fathoms; br. s.; temp. 42.7 F. One specimen. 



Albatross station 2668. May 5, 1886. Lat. 30 58' 30" N.; long. 79 38' 

 30" W.; 294 fathoms; gy. s. dd. co.; temp. 46.3 F. Two specimens. 



Albatross station 2753. Dec. 4, 1887. Lat. 13 34' N.; long. 61 03' W.; 281 

 fathoms; bk. s.; temp. 48 F. One specimen. 



The diameter of the disk reaches 18 mm. in the specimen from station 2663 

 and in one of the two from station 2668; the one from station 2753 is smaller 

 (diameter of the disk 13-14 mm.). The second specimen from station 2668 is 

 small and in a bad state of preservation. The arms of the larger examples are from 

 75 to 85 mm. long. 



The brachial spines generally amount to three, a figure indicated by Lyman; 

 there is sometimes an alternation between three and four spines, as indicated by 

 Verrill, or between two and three. The oral papillae number three on the speci- 

 men from station 2753, and three or four in the others; on the first specimen, they 

 show a regular shape with the free edge finely denticulated, as stated by Verrill; 

 in the others, they are more irregular. 



