OPHIURANS OF UNITED STATES NATIONAL MUSEUM. 41 



Albatross station 2750. Nov. 27, 1887. Lat. 18 30' N.; long. 63 31' W.; 

 496 fathoms; fne. gy. s.; temp. 44.5 F. Seven specimens. 



The specimens from station 2750 have their first upper brachial plate divided 

 into two almost equal halves, according to the drawing published by Lyman in 1865 

 (65, pi. 5, fig. 78). In those of station 2117, this plate is single and its disposition is 

 imilar to that depicted by Lyman in the Reports of the Challenger (82, pi. 17, fig. 10). 



OPHIACTIS MULLERI Lutken. 



See for bibliography : 

 Lyman (82), p. 115. 

 Kcehler (07), p. 311. 



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

 34 fathoms; brk. sh. One specimen. 



Albatross stations 2369-2374. Feb. 7, 1885. Lat. 29 18' to 29 11' N.; 

 long. 85 32' to 85 29' W.; 25-27 fathoms. A few specimens. 



Albatross station 2406. Mar. 15, 1885. Lat. 28 46' 00" N.; long. 84 49' W.; 

 26 fathoms; crs. s. co. One specimen. 



In the sample from station 2406, the diameter of the disk is 3 mm. ; the others 

 are smaller and their diameters do not exceed 2 mm. Most have six arms, but 

 some, however, have only five. 



OPHIACTIS SAVIGNYI (MUller and Troscbel). 



See for bibliography: 



Kcehler (05), p. 26. 

 Kcehler (07), p. 311. 

 Kcehler (13), p. 355. 



Albatross station 2374. Feb. 5, 1885. Lat. 29 11' 30" N.; long. 85 29' W.; 

 26 fathoms; s. g. brk. sh. One specimen. 



Albatross station 2409. Mar. 18, 1885. Lat. 27 04' X. ; long. 83 21' 15" W.; 

 26 fathoms; crs. gy. s. brk. sh. One specimen. 



Fish Hawk station 7293. Feb. 24, 1902. Lat. 24 42' 30" N.; long. 81 55' 

 52" W.; 7J fathoms; co.; temp. 20 C. One specimen. 



Fish HawJc station 7402. Jan. 7, 1903. Pigeon Key Lake; 9 feet; s. gs. 

 Two specimens. 



Fish Hawk station 7405. Jan. 7, 1903. Pigeon Key Lake; 10 feet; rky. One 

 specimen. 



Key West. Dec. 2, 1903. Main Ship Channel. One specimen. 



Dry Tortugas, 1884. Several specimens. 



Spanish Wells, Eleuthera Island, Bahamas. One specimen. 



St. Thomas, 1884. Several specimens. 



Pernambuco, 1875. One specimen. 



Abrothos Islands. Dec. 12, 1887. Several specimens. 



No label. One specimen. 



All the specimens are provided with six arms, except that of station 2409, 

 which has seven. 



