OPHIUKANS OF UNITED STATES NATIONAL MUSEUM. 61 



Ljungman's type was gathered by Kinberg, at lat. 22 30' S. and long. 40 

 55' W.; as there is no indication of the depth, the example most likely came from a 

 littoral station; we see that this station is very near the one where the Albatross 

 found the species. I do not think that A. complanata has been met with elsewhere 

 since the time when Ljungman described it. 



AMPHIURA OTTERI Ljungman. 

 Plate 8, figs. 5-9. 



Amphiura otteri LJUNGMAN (71), p. 631. 

 Amphiura otteri LYMAN (78), p. 32. 

 Amphiura otteri LYMAN (82), p. 128. 

 Amphiura otteri LYMAN (83), p. 252. 

 Amphiura otteri VEURILL (85), p. 548. 

 Amphiura otteri KCEHLER (07), p. 302. 



Albatross station 2003. Off Cape Hatteras; 641 fathoms. Three small speci- 

 mens the diameter of the disks of which ranges between 6 and 7 mm.; the arms 

 are about 50 to 60 mm. long, but they are generally incomplete; the disks are, 

 however, in good condition. 



Albatross station 2838. May 5, 1888. Off Lower California, lat. 28 12'00" N., 

 long. 115 09' 00" W.; 44 fathoms; gn. m. Two specimens. In one of them 

 the disk is 12 mm. in diameter and the arms are broken off near the basis. The 

 second sample is in a better state, the diameter of the disk is 10 mm., the arms are 

 preserved to about 90 mm.; besides, there are in the jar some arm pieces which 

 are 170 mm. long. 



Fish Hawk station 898. Off mouth of Chesapeake Bay; 300 fathoms; mud; 

 temp. 44 F. Two specimens. The diameter of the more or less damaged disks 

 ranges between 9 and 10 mm.; and the arms are preserved to lengths varying between 

 15 and 50 mm. 



Speedwell station 186. August 31, 1878. Eastern point of Gloucester Harbor; 

 about 110 fathoms; muddy. One dry specimen from which the upper face has been 

 taken away; the arms are broken about 20 mm. from their basis. 



If we look over the bibliography of A. otteri we will ascertain that we do not 

 possess very complete information concerning this species. Ljungman's description 

 is, as usual, rather concise and very short; Verrill added some remarks in 1885. 

 Lyman, who had several specimens of this same species at his disposal and who was 

 able to compare it with Ljungman's type, added nothing to our knowledge. In his 

 synoptical table of Amphiurse published in the Reports of the Challenger (82, p. 123) 

 this author classifies A. otteri among the species of Amphiurse, s. str., in which 

 both faces of the disk are covered with plates and which at the same time possess 

 two tentacular scales and elongated arms; he characterizes it by the presence of 

 six spines, the most inferior of which is the longest, and one of which is bent. I 

 should like to have given in 1907 more complete information about this species 

 when reviewing the ophiurans of the Paris Museum, which owns a specimen of A. 

 otteri from the dredgings of the BlaJce, but owing to the poor state of the under 

 face, which had been damaged by foreign bodies, I was unable to completely recog- 

 nize the characters of this specimen, and could do no more than represent its upper 

 face. (07, pi. 11, fig. 19.) 



