NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. 219 



exposure of the close, even scaling of the disk, greatly affects the 

 color, for the scales are gray of some shade, often quite dark; some- 

 times the radial scales are dark while the interradial are light. The 

 arms are sometimes prettily banded with light and dark. 



Localities. Albatross station 2853, off Alaska, lat. 56 N.; long. 

 154 20' W., 159 fathoms, gray sand, bottom temperature 41, 104 

 specimens; station 3332, off Alaska, lat. 54 2' 50" N.; long. 166 

 45' W., 406 fathoms, rocky, sand, 4 specimens; station 3338, off 

 Alaska, lat. 54 19' N.; long. 159 40' W., 625 fathoms, green mud, 

 sand, bottom temperature 37.3, 3 specimens; station 3339, off 

 Alaska, lat. 54 46' N.; long. 157 43' 30" W., 138 fathoms, mud, 

 gravel, bottom temperature 37.4, 106 specimens ("half a peck 

 rejected"); station 3340, off Alaska, lat. 55 26' N.; long. 155 26' 

 W., 695 fathoms, mud, bottom temperature 36.8, 2 specimens; 

 station 4781, Bering Sea, lat. 52 14' 30" N.; long. 174 13' E., 482 

 fathoms, fine gray sand, pebbles, bottom temperature 38.6, 3 spec- 

 imens; station 48Q4, off Kurile Islands, lat. 46 42' N.; long. 151 47' 

 E., 229 fathoms, coarse pebbles, black sand, bottom temperature 35.9, 



1 specimen; station 4980, off eastern Japan, lat. 34 9' N.; long. 

 137 55' E., 507 fathoms, brown mud, fine sand, foraminifera, bot- 

 tom temperature 39, 39 specimens; station 5079, off Omai Saki Light, 

 lat. 34 15' N.; long. 138 E., 475 to 505 fathoms, pebbles, bottom 

 temperature 39.1, 10 specimens; station 5080, off Omai Saki Light, 

 lat. 34 10' 30" N.; long. 138 40' E., 505 fathoms, fine gray sand, 

 globigerina, bottom temperature 38.7, 1 specimen; station 5083, 

 off Omai Saki Light, lat. 34 4' 20" N.; long. 137 57' 30" E., 624 

 fathoms, fine gray sand, globigerina, bottom temperature 38.1, 38 

 specimens; station 5093, Uraga Strait, lat. 35 3' 15" N. ; long. 139 

 37' 42" E., 302 fathoms, coarse black sand, bottom temperature 43.9, 



2 specimens. Loc. ?, 12 specimens. Bathymetrical range, 138 to 

 695 fathoms. Temperature range, 43.9 to 35.9. Three hundred 

 and twenty-five specimens. 



Type. Cut. No. 25625, U.S.N.M., from station 3339. 



Although at first sight this species is very near both relicta Koehler 

 and normani Lyman, it is quite distinct from either. The arm spines 

 are as numerous as in relicta, but they are perfectly smooth, while the 

 remarkable tentacle scales are very characteristic. 



OPHIACANTHA CEDIDISCA, new species.o 



Disk 10 mm. in diameter; arms about 50 mm. long. Disk decidedly 

 tumid, or swollen, its vertical diameter being about 4 mm.; it is 

 very closely covered by minute granules, which are not, however, in 



a 'Oldew, signifying to swell, and BIOKO?, signifying disk, in reference to the very 

 elevated disk. 



