NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. 259 



station 4900, Eastern Sea, lat. 32° 28' 50" N.; long. 128° 34' 40" E., 

 139 fathoms, gray sand, broken shells, bottom temperature 52.9°, 

 14 specimens; station 4901, Eastern Sea, lat. 32° 30' 10" N.; long. 

 128° 34' 40" E., 139 fathoms, gray sand, broken shells, 5 specimens; 

 station 4902, Eastern Sea, lat. 32° 30' 50" X.; long. 128° 34' 40" E. 

 139 fathoms, gray sand, broken shells, 3 specimens; station 4903, 

 Eastern Sea, lat. 32° 31' 10" N.; long. 128° 33' 20" E., 107 to 139 

 fathoms, gray sand, broken shells, 26 specimens; station 4933, 

 Eastern Sea, lat. 30° 59' N.; long. 130° 29' 50" E., 152 fathoms, 

 rocky, bottom temperature 56°, 1 specimen; station 4934, Eastern 

 Sea, lat. 30° 58' 30" N.; long. 130° 32' E., 103 to 152 fathoms, rocky, 

 2 specimens; station 4937, Kagoshima Gulf, lat. 31° 13' N.; long. 

 130° 43' 10" E., 58 fathoms, mud, lava, pebbles, bottom tempera- 

 ture 64.8°, 32 specimens; station 4946, off southern Japan, lat. 

 31° 29' 10" N.; long. 130° 34' 30" E., 39 fathoms, brown sand, 

 broken shells, pebbles, bottom temperature 68.7°, 1 specimen; sta- 

 tion 4947, off southern Japan, lat. 31° 28' 20" N.; long. 130° 35' 30" 

 E., 51 fathoms, 1 specimen; station 5055, Suniga Gulf, lat. 34° 53' X.; 

 long. 138° 44' 15" E., 124 fathoms, green mud, gray sand, broken 

 shells, pebbles, bottom temperature 56.6°, 2 specimens; station 5068, 

 Suruga Gulf, lat. 35° 2' 25" N.; long. 138° 46' 55" E., 77 to 131 

 fathoms, black sand, broken shells, bottom temperature 63°, 1 speci- 

 men; station 5069, Suruga Gulf, lat. 35° 3' 10" X.; long. 138° 47' 

 E., 108 to 131 fathoms, mud, sand, broken shells, bottom tempera- 

 ture 55.8°, 11 specimens; station 5070, Suruga Gulf, lat. 35° 3' 25" 

 X.; long. 138° 47' 40" E., 108 fathoms, mud, sand, broken shells, 

 bottom temperature 57.6°, 8 specimens; station 5091, Uraga Strait, 

 lat. 35° 4' 10" X.; long. 139° 38' 12" E., 197 fathoms, green mud, 

 coarse black sand, pebbles, bottom temperature 47.6°, 6 specimens; 

 station 5092, Uraga Strait, lat. 35° 4' 50" X.; long. 139° 38' 18" E., 

 70 fathoms, coarse black sand, bottom temperature 56.3°, 3 speci- 

 mens; station 5093, Uraga Strait, lat. 35° 3' 15" X.; long. 139° 

 37' 42" E., 302 fathoms, coarse black sand, bottom temperature 

 43.9°, 1 specimen; station 5094, Uraga Strait, lat. 35° 4' 42" X.; 

 long. 139° 38' 20" E., 88 fathoms, black sand, broken shells, bottom 

 temperature 54.8°, 5 specimens; station 5095, Uraga Strait, lat. 35° 

 5' 34" X.; long. 139° 38' 36" E., 58 fathoms, fine black sand, broken 

 shells, bottom temperature 57.8°, 14 specimens. Bathymetrical 

 range, 11^ to 302 fathoms. Temperature range, 68.7° to 42.5°. Four 

 hundred and eleven specimens. 



There is no doubt that this is a most variable species and these 

 specimens ranging in disk diameter from 3 to 17 mm., reveal it to a 

 remarkable degree. They vary in color, in abundance and size 

 of disk stumps and spines, in slenderness of arm spines and in degree 

 to which radial shields are bare, and extremes in any one of these 



