NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM — CLARK. 2l0 



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

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

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

 arms are sometimes prettily banded with light and dark. 



Localities. — Alhatrofts 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 4804, 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, oft' 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.— Csit. 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.a 



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 closety covered by minute granules, which are not, however, in 



a 'Oldecj, signifying to swell, and dioKoc, signifying disk, in reference to the very 

 elevated disk. 



