22 BULLETIN 84, UNITED STATES NATIONAL MUSEUM. 



Albatross station 2754. Dec. 5, 1887. Lat. 11 40' N.; long. 58 33' W.; 

 880 fathoms; glob, oz.; temp. 38 F. Many specimens. 



Albatross station 2763. Dec. 30, 1887. Lat. 24 17' S.; long. 42 48' 30" W.; 

 671 fathoms; br. glob, oz.; temp. 37.9 F. 



Grampus station 5118. Mar. 23, 1889. Lat. 26 30' N.; long. 83 55' W.; 

 59 fathoms; hrd. One specimen. 



Fish Hawk station 7283. Feb. 19, 1902. Lat. 24 17' 30" N.; long. 81 53' 

 30" W.; 127 fathoms; s. gr.; temp. 53 F. One specimen. 



Fish Hawk station 7296. Feb. 26, 1902. Lat. 24 21' 45" N.; long. 81 47' 

 45" W.; 122 fathoms; co.; temp. 54 F. One specimen. 



Fish Hawk station 7514. Mar. 25, 1902. Six miles east of Fowey Rocks 

 Light; 200 fathoms; gy. m.; temp. 48 F. Six specimens. 



Fish Hawk station 7512. Mar. 25, 1903. 3% miles southeast by east of Fowey 

 Rocks Light; 170 fathoms; sft.; temp. 51 F. Four specimens. 



It will be seen from the above table of localities of 0. ljungmani that the species 

 occurs in depths ranging from 56 to 1,209 fathoms. According to H. L. Clark 

 (01, p. 243), 0. ljungmani has been found at Porto Rico in depths of 20 to 45 

 fathoms only. It is not so in the Eastern region of the Atlantic, where 0. ljungmani 

 has not yet been met with except in very deep waters, about 850-1,100 fathoms. 



After studying the very rich series of 0. ljungmani which has been intrusted 

 to me by the National Museum, I have made sure that 0. thouleti, which I had intro- 

 duced in 1896, after a single specimen, and which I had later found fairly abundant 

 in the Echinoderms gathered by the TravaiUeur and the Talisman, as well as 

 by the Princesse Alice, can not be separated from 0. ljungmani. The specimens 

 which I formerly referred, and correctly, to this latter species, had always been fairly 

 numerous and of rather small size; they almost always had small spines on the 

 upper face of their disk, but owing to my resolution not to dry them, I was unable 

 to recognize the supplemental radial comb which I thought was a character of 

 0. thouleti. Consequently I had been inclined to refer to the latter species the 

 larger specimens in which I easily observed the supplementary radial comb, and 

 which happened not to possess any spines on the upper face of the disk. 



In fact, 0. ljungmani always possesses within the chief radial comb, a series 

 of very fine papillae which advance to near the middle of the third upper brachial 

 plate, and I do not see, after all, either in the arrangement of the plates of the disk 

 or of the arms, or in the shape of the mouth shields, any character permitting a 

 specific separation between 0. ljungmani and 0. thouleti. Consequently the latter 

 can not be considered except as a synonym of the former. 



OPHIOGI.YPHA LYMANI Ljungman. 



See for bibliography: 



Ludwig (99), p. 5. 



Ludwig (05), p. 73. 



Koehler (07), p. 295, pi. 10, figs. 11-12. 



Albatross station 2770. Jan. 17, 1888. Lat. 48 37' S.; long. 65 46' W.; 

 58 fathoms; gy. s. bk. sp. Three specimens. 



Albatross station 2771. Jan. 17, 1888. Lat. 51 34' S. long. 68 00' W.; 



50.5 fathoms; gy. s. bk. sp.; temp. 49.4 F. Many specimens. 



