NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. 197 



shells, rocks, bottom temperature 50.2, 1 specimen; station 4893, 

 Eastern Sea, lat. 32 32' N.; long. 128 32' 50" E., 95 to 106 fathoms, 

 gray sand, broken shells, pebbles, bottom temperature 55.9, 2 speci- 

 mens; station 4894, Eastern Sea, lat. 32 33' N.; long. 128 32' 10" E., 

 95 fathoms, green sand, broken shells, pebbles, 1 specimen; station 

 4901, Eastern Sea, lat. 32 30' 10" N.; long. 128 34' 40" E., 139 

 fathoms, gray sand, broken shells, bottom temperature 52.9, 1 speci- 

 men; station 4902, Eastern Sea, lat, 32 30' 50" N.; long. 128 34' 

 40" E., 139 fathoms, gray sand, broken shells, 1 specimen; station 

 4903, Eastern Sea, lat. 32 31' 10" X.; long. 128 33' 20" E., 107 to 

 139 fathoms, gray sand, broken shells, 23 specimens; station 4904, 

 Eastern Sea, lat. 32 31' 20" N.; long. 128 32' 40" E., 107 fathoms, 

 fine gray sand, broken shells, 1 specimen; station 4905, Eastern Sea, 

 lat. 31 39' N.; long. 129 19' E., 369 fathoms, bottom temperature 

 43.4, 1 specimen; station 4916, Eastern Sea, lat. 30 25' N.; long. 

 129 6' 40" E., 361 fathoms, gray sand, globigerina, broken shells, 

 bottom temperature 42.7, 136 specimens; station 4965, off eastern 

 Japan, lat. 33 35' 20" N.; long. 135 10' 50" E., 191 fathoms, dark 

 green-gray sand, shells, bottom temperature 49.4, 3 specimens; 

 station 4967, off eastern Japan, lat. 33 25' 10" N.; long. 135 37' 

 20" E., 244 to 253 fathoms, brown mud, sand, bottom temperature 

 45.9, 2 specimens; station 4979, off eastern Japan, lat. 33 53' N.; 

 long. 137 42' E., 943 fathoms, brown mud, fine sand, foraminifera, 

 bottom temperature 36.4, 9 specimens; station 5055, Suruga Gulf, 

 lat. 34 53' N.; long. 138 44' 50" E., 124 fathoms, green mud, gray 

 sand, broken shells, pebbles, bottom temperature 56.6, 2 specimens; 

 station 5069, Suruga Gulf, lat. 35 3' 10" N.; long. 138 47' E., 108 to 

 131 fathoms, mud, sand, broken shells, bottom temperature 55.8, 

 1 specimen; station 5070, Suruga Gulf, lat. 35 3' 25" N.; long. 138 

 47' 40" E., 108 fathoms, mud, sand, broken shells, bottom tempera- 

 ture 57.6, 1 specimen; station 5084, off Omai Saki Light, lat. 34 N.; 

 long. 137 49' 40" E., 918 fathoms, green mud, fine sand, globigerina, 

 bottom temperature 36.8, 4 specimens. Bathymetrical range, 45 to 

 943 fathoms. Temperature range, 62.1 to 36.4. Two hundred and 

 seven specimens. 



These specimens show great dirersity in color (dried from alcohol) 

 and in the relative length of arm (compared to disk diameter). The 

 color varies in different specimens from cream-white to deep grayish- 

 brown. The length of arm varies from four to six times the diameter 

 of the disk. There is so little divergence from Koehler's figures and 

 description that I need mention only two points; the distal margin of 

 the upper and under arm plates is very convex except on the first two 

 or three joints and the plates are very much farther apart than in his 

 figures; the basal rows of spines of opposite sides are almost com- 

 pletely approximated dorsally. The largest specimen is nearly 8 mm. 



