2 
OPHIOTHRIX. 135 
m'. Poole, 23 fms., July 1889. F. J. B. Beckford, 
Esq. 
n*. Firth of Forth. 
o*-z°. Montrose, 22/6, 27/6, 3/7, 4/7, 6/7, 1889. W. Duncan, Esq. 
a‘, Aberdeen. G. Sim, Esq. 
b*. KE. coast of Ross-shire, Dr. Sutherland. 
c*, d'. Moussa (Shetland). EK. M. Nelson, Esq. 
e*, Orkney. Haslar Coll. 
2. Ophiothrix luetkeni. 
Ophiothrix litkeni, Wyv. Thoms. Depths of the Sea, (1872) p. 100 
[n.n.]; Lyman, Bull. M. C. Z, iii. (1874) p. 248; td. Chall. Rep. 
Oph. (1882) p. 218; Bell, Ann. §& Mag. viii. (1891) p. 339. 
Ophiothrix pentaphyllum, Bell, Ann. § Mag. iv. (1889) p. 436; ed. 
J. Mar. Biol. Assoc, i. (1890) p. 825. 
A stout well-grown species. Arms about ten times as long as 
the radius of the disk. The scales on the disk not unlike those of 
O. fragilis and, as in it, they may or may not be covered with 
spines. The interbrachial spaces have the middle third occupied 
by fine spines, which are sometimes only poorly developed, while 
the sides are bare. The triangular shields differ chiefly from those 
of O. fragilis in not having their spines or spinous granules confined 
to one angle. 
Teeth-papille coarse. Arms broad, flat, strong. The upper 
arm-plates somewhat variable in form, but always with a few fine 
spines on their surface; they are hardly at all carinate, and have 
pretty even proximal and distal edges. Spines coarser and rather 
shorter than in O. fragilis, about seven in number. The lower 
arm-plates may. have a distal concavity, but this is not very obvious 
in full-grown specimens. One tentacle-scale. 
Colour white or banded, or spotted with red or purple. 
R. Oe 
100 (arm broken) 11-5 
150 (arm broken) 13 
(arms much broken) 15 
Distribution. A young specimen reported by Lyman from the 
Azores. 90-315 fms. 
a. 40 miles off Bolus Head, 115 fms. R. Irish Acad. 
6. 50 miles off Bolus Head, 200 fms. R. Irish Acad. 
ce, d. 50° 50' 15” N., 11° 12’ 30” W., 200 fms. G. C. Bourne, Esq. 
e. 48° 39’ 42" N., 10° 07' 27” W., 90 fms. G. C. Bourne, Esq. 
f. S.W. coast of Ireland, 200 fms. ‘Flying Fox’ Exp. 
g. 3.W. coast of Ireland, 250 or 315 fms. ‘Fiying Fox’ Exp. 
h-+yj. ——? ‘Porcupine’ Exp. 
