224 BULLETIN 75, UNITED STATES NATIONAL MUSEUM. 



smooth; next to uppermost longest, equal to rather more than two 

 joints. Tentacle scale single, very large, especially on first pair of 

 pores, flat and blunt or somewhat pointed. Color (dried from alcohol), 

 very light yellowish. 



Locality. Albatross station 2859, off Alaska, lat. 55 20' N.; long. 

 136 20' W., 1,569 fathoms, gray ooze, bottom temperature 34.9, 3 

 specimens. 



Type. Cat. No. 25626, U.S.N.M., from station 2859. 



Although this species is obviously related to normani, cataleimmoida, 

 and wdidisca, it may be readily distinguished from any of those species 

 by the thorny stumps, rather than granules, on the disk; the proximity 



C 



. 104. OPHIACANTHA LEPIDOTA. x 10. a, FROM ABOVE; 6, FROM BELOW; c, SIDE VIEW OF TWO ARM 



JOINTS NEAR DISK. 



of the radial shields, the huge outer oral papilla, and the numerous 

 very slender arm spines. The general appearance is lighter and more 

 fragile than that of any of the related species. 



OPHIACANTHA LEPIDOTA, new species.a 



Disk 5 mm. in diameter; arms about 20 mm. long, probably. Disk 

 covered by large overlapping scales, upon which are borne low, thorny 



signifying covered with scales, in reference to the coarse scaling of the 

 disk (fig. 104a); very likely not particularly applicable to an uninjured specimen. 



