OPHIURANS OF UNITED STATES NATIONAL MUSEUM. 45 



OPHIOPSILA RIISEI Liitken. 



See for bibliography: 



Verrill (99), p. 23. 

 H. L. Clark (01), p. 246. 

 Verrill (07), p. 328. 

 Keehler (07), p. 315. 



Albatross station 2649. Apr. 12, 1886. Lat. 23 34' N.; long. 76 33' W.; 

 36 fathoms; co. s.; temp. 74.2 F. A single arm. 



Fish Hawk station 7151. Nov. 7, 1901. Deadman's Bay. Lat. 29 43' 40" 

 N.; long. 83 49' 45" W.; 5J fathoms; c.; temp. 20.5 C. Two specimens. 



Fish Hawk station 7467. Feb. 19, 1903. Grecian Shoals, Florida; 2J fathoms; 

 barry and s. One specimen. 



Fish Hawk station 7482. Mar. 7, 1903. Biscayne Bay Key, Florida; If 

 fathoms; barry. One specimen. 



Fish HawTc station 7484. Mar. 7, 1903. Biscayne Bay Key, Florida; 2 

 fathoms; s. grs. One specimen. 



FisTi Hawk station 7493. Mar. 10, 1903. Card Sound, Florida; 1 fathoms; 

 barry. One specimen. 



Key West, Florida. Three specimens. 



Florida. Two dry specimens. 



OPHIOPSILA MACULATA (Verrill). 



Amphipsila maculata VEHRILL (99), p. 55. 



Albatross station 2138. Feb. 29, 1884. Lat, 17 44' 05" N. ; long. 75 39' W. ; 

 23 fathoms; co. brk. sh. One specimen. 



Albatross station 2167. May 1, 1884. Lat, 23 10' 40" N.; long. 82 20' 30" 

 W.; 201 fathoms; co. One specimen. 



The two samples are not in good condition. 



AMPHIURA FLEXUOSA LJungman 

 Plate 4, figs. 1-2. 



Amphiura flexuosa LJUNGMAN (66), p. 319. 

 Amphiura flexuosa LJUNGMAN (71), p. 643. 

 Amphiura flexuosa LTMAN (76), p. 17. 

 Amphiura Jlexuosa LYMAN (82), pp. 124 and 144. 

 Amphiura Jlexuosa H. L. CLARK (01), p. 247. 



A, Jlexuosa was described by Ljungman from a single specimen which came 

 from the Brazilian coast, and which is very likely littoral. The characters of this 

 species were stated again by the same writer in the table of Amphiuridse pub- 

 lished by him in 1871, where he classified it among the species with bare under face 

 of disk. Notwithstanding certain characters which have been plainly, though 

 very briefly, indicated by Ljungman, the species does not seem to have been easily 

 recognized after this writer. Lyman, who had first referred to that species in 1875, 

 an Amphiura found in the waters of Barbados at 100 fathoms depth, separates it 

 under the name of A. palmeri in the synoptical table of the species of Amphiurse 

 of the CTiaUenger. According to Lyman, this latter species is characterized 

 chiefly by the presence of plates, little apparent, on the under face of the disk, 

 and by the shape of the second and third under spines having each a hook-shaped 



