BULLETIN OF THE 
Ophiocten pallidum sp. nov. 
Plate V. Figs. 126 -128. 
Special Marks. — Disk covered with minute thin scales, among which appes: 
very small, widely separated primary plates. One minute tentacle-scale. Three 
short, equal, slender arm-spines. 
Description of an Individual (Station 160). — Diameter of disk 14.5 mm. 
Length of arm about 70mm. Width of arm close to disk, without spines, 1.7 mm. 
Five short, blunt, ill-defined mouth-papillo on the side, and one larger at apex 
of jaw, like the three or four teeth that stand immediately above it. Mouth- 
shields much broader than long, bounded on the outer edge by a wide curve and 
by a very wide angle within ; length to breadth 1.2: 2.6, Side mouth-shields 
long and narrow, extending along the inner angle of the mouth-shield, and just 
meeting within, where they broaden slightly, becoming narrower at the outer end 
where attached to the side arm-plate. First under arm-plate much larger than 
the others, four-sided, with outer edge straight, lateral sides re-enteringly curved, 
and ashort side, like a truncated angle within ; the rest of the under arm-plates 
are very small, with a curved outer side, and are nearly semicircular in form, 
but have a slight peak inward at the junction of the side arm-plates, which 
are thin and wide, flaring slightly outward, meeting broadly below, and separated. 
above by the upper arm-plates, which are four-sided, with outer edge nearly 
straight and wider than inner. Disk round, smooth, and flat, covered with 
minute, very thin, overlapping scales, four or five in the length of a mm. on 
upper surface, and more below ; among them may be distinguished small, 
round, widely separated primary plates. Radial shields longer than broad, 
three-sided, with all three angles much rounded, widely separated their entire 
length by the disk scaling ; length to breadth 2.6 : 1.5. Genital scales hidden, 
except the outer tip, which shows outside the radial shield, and bears no papilla, 
or only one or two rudimentary. Three sharp, slender, tapering arm-spines, 
situated close to each other on the middle edge of the side arm-plate. Only 
one very minute, rounded tentacle-scale on the outer edge of some of the ten- 
tacle-pores ; a little way out on the arm there usually is a minute scale on the 
inside of the pore, and none on the outer side, Color in alcohol, pale straw. 
Station 160, 2600 fathoms, 12 + specimens, Station 156, 1975 fathoms, 
4 specimens. 
Ophiocten sericeum? Lun. 
Ophiura sericea FB8. 
Ophiocten Kröyeri LTK. 
Ophioglypha gracilis ? (young) G. O. SARS. 
Ophiocten sericeum seems not to differ essentially from Ophioglypha gracilis, 
except in having a comb of fine papilla along the outer edges of the basal upper 
arm-plates ; but this comb is wanting in the young, and not regular in the adult. 
