202 



BULLETIN 75^ UNITED STATES NATIONAL MUSEUM, 



ture 55.9°, 2 specimens; station 4902, Eastern Sea, lat. 32° 30' 50" 

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

 bottom temperature 52.9°, 2 specimens; station 4903, Eastern Sea, 

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

 sand, broken shells, bottom temperature 52.9°, 1 specimen; 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°, 71 specimens; station 4967, off eastern Japan, lat. 33° 25' 10" 

 N.; long. 135° 37' 20" E., 244 to 253 fathoms, brown mud, sand, 

 foraminifera, bottom temperature 45.9°, 2 specimens; station 5079, off 

 Omai Saki Light, lat. 34° 15' N.; long. 138° E., 475 to 505 fathoms, 



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Fig. 93.— Ophiacantha omoplata. X 8. a, from above; 6, from below; c, side view of two arm 



JOINTS near disk. 



pebbles, bottom temperature 39.1°, 4 specimens; station 5091, 

 Uraga Strait, lat. 35° 4' 10" N.; long. 139° 38' 12" E., 197 fathoms, 

 green mud, coarse black sand, pebbles, bottom temperature 47.6°, 

 5 specimens. Bathymetrical range, 63 to 584 fathoms. Tempera- 

 ture range, 55.9° to 37.2°. One hundred and twenty-two specimens. 

 TVpg.— Cat. No. 25630, U.S.N.M., from station 4902. 



OPHIACANTHA OMOPLATA, new species.a 



Similar to adiaphora in size and proportions and in many other 

 respects. Upper arm plates a little larger and relatively wider 



a QjjLonX&TTj, signifying shoulder blade, in reference to the shape of the distal oral 

 papilla. 



