OPHIURANS OF UNITEP STATES NATIONAL MUSEUM. 23 



Albatross station 2779. Jan. 23, 1888. Lat. 53° Of)' S.; long. 70° 40' 30" W.; 

 77.5 fathoms; gn. oz.; temp. 40.9° F. Two specimens. 



Albatross station 2780. Feb. 2, 1888. Lat. 53° 01' S.; long. 73° 42' 30" W.; 

 369 fathoms; gn. m.; temp. 46.9° F. Six specimens. 



Albatross station 2783. Feb. 6, 1888. Lat. 51° 02' 30" S.; long. 74° 08' 30" 

 W.; 122 fathoms; bu. m.; temp. 47.9° F. Many specimens. 



Albatross station 2784. Fob. 8, 1888. Lat. 48° 41' S.; long. 74° 24' W.; 194 

 fathoms; bu. m.; tomp. 51.0° F. Many specimens. 



OPmOGLYPHA ROBDSTA (Ayresi. 



See for bibliography : 

 Kcehlor (09), p. 154. 



Albatross station 2055, Aug. 30, 1883. Lat. 42° 32' N.; long. 68° 17' W.; 

 99.5 fathoms; bu. m., s., and crs. g. One little specimen. 



OPmOGLYPHA SARSII (LUlken). 



Plate 1, fig.s. 5-0. 

 See for bibliography : 



Grieg (07), p. 1.5. 



Kcc'hler(09\ p. 155. 



Sussbach and Breckner (11), p. 248. 



n. L.Clark (11), p. 37. 



Albatross station 2020. May 21, 1883. Lat. 37° 37' 50" N.; long. 74° 15' 

 30" W.; 143 fathoms; bu. m. fne. s. One specimen. 



Albatross stations 2582-2583. Sept. 18, 1885. Lat. 39° 50' N.; long. 71° 

 43' W.; 131-137 fathoms; gn. m. s.; temp. 47.2° F. Numerous specimens. 



Albatross station 26G8. May 5, 1886. Lat. 30° 58' 30" N.; long. 79° 38' 

 30" W.; 294 fathoms; gy. s. dd. co.; temp. 46.3° F. One specimen. 



Albatross station 3456. Sept. 1, 1891. Lat. 48° 31' 15" N.; long. 124° 43' 

 15" W; 136 fathoms; gy. s.; temp. 44.2° F. One specimen. 



Fish Hawl station 103S. Sept. 21, 1881. Off Marthas Vineyard, Massachusetts; 

 146 fathoms; s. and sh. ; temp. 47° F. Two specimens. 



Fish Ilaivk station 1111. Aug. 22, 1882. Off Marthas Vineyard, Massachusetts; 

 124 fathoms; fne. s.; temp. 47° F. Numerous specimens. 



East coast of North America. One specimen. 



The specimens from stations 2582-2583 were associated in almost equal num- 

 ber with some OpModen hastatum; they are all very small, the diameter of their 

 disks never exceeding 12-13 mm.; in some of them this diameter ranged between 

 2 and 4 mm. I reproduce here two of these small specimens (pi. 1, figs. 5-6). 

 The one from station 3456, the disk of which is 7 mm. in diameter, has short and 

 conical radial papillae. 



The variations of 0. sarsii are well known, and recently several writers, Grieg, 

 Mortensen, II. L. Clark, and others have WTitten exhaustively about them. The 

 only variations which I observe in tlio collection of the National Museum refer to 

 the upper plates of the disk which may be more or less protruding. 

 60G1°— Bull. 84—14 3 



