232 BULLETIN OF THE 
Ophiothamnus vicarius Lym. 
Ophiothamnus vicarius, Bull. Mus. Comp. Zool. I. No. 10, p. 842. 1869. Ill. Catal. 
Mus. Comp. Zóol. No. VI. Pl. II. Figs. 8, 9. 
Station 5, 152— 229 fathoms, 5 specimens. Station 45, 101 fathoms, 1 spe- 
cimen. 
Ophiocamax histrix sp. nov. 
Plate I, Figs. 13-15, 
Special Marks. — Mouth-papillee humerous and spine-like, Disk covered 
with rather large and very irregular plates, and radial shields sparsely beset 
with stout thorny spikes, 
Description of an Individual. — Diameter of disk 11 mm. Width of arm close 
to disk, without spines, 3.5 mm. About thirty long, spiniform, equal mouth- 
papilla to each angle, arranged in clusters. Mouth-shields small, slightly 
swollen, with a long lobe projecting towards the interbrachial space, a blunt 
angle inward, and lateral corners rounded ; on the outer portion are a few 
grains. Side mouth-shields very large, meeting broadly within, and connected. 
with the first under arm-plate. Under arm-plates much broader than long, 
with an obtuse angle within, outer edge slightly curved, and truncated angles 
on the lateral sides. Side arm-plates large, and projecting, nearly meeting be- 
low at base of arm, but not above. Upper arm-plates large, slightly swollen, 
with the outer edge, which is much broader than the inner, irregularly curved. 
Disk thick and somewhat swollen, with deep constrictions on the interbrachial 
spaces, covered with coarse, angular, irregularly shaped. plates, carrying a few 
short, pointed, thorny spikes. Radial shields large, and irregularly angular, 
wider without than within, where they are separated by one or more wedge- 
like scales ; length to breadth 3.5 :2.5 mm.” Hight long, thorny, glassy arm- 
spines, the uppermost being as long as six arm-joints, and the second as four, 
whence they diminish rapidly downward to the lowest, which is scarcely as 
long as a joint. Three long, stout, bluntly pointed, thorny tentacle-scales to 
each pore. Color in alcohol, pale bluish-gray. 
Sigsbee, off Havana, 175 fathoms, 7 specimens. 
Ophiothrix violacea Mii & Tr. 
Ophiothrix violacea Syst., Asterid. p. 115. 1842. 
Ophiothrix caribaea LIK., Vidensk. Meddelelser, Jan. 1856. 
Ophiothria Kroyert LTK., Vidensk. Meddelelser, Jan. 1856. 
Station 11, 37 fathoms, 8 specimens. Station 12, 36 fathoms, 3 specimens. 
Station 32, 95 fathoms, 1 specimen, Station 38, 20 fathoms, 2 specimens. 
Station 39, 14 fathoms, 10 specimens. Station 45, 101 fathoms, 1 specimen. 
Bahia Honda, 2 specimens. 
Ophiothrix Suensonii Lrx. 
Ophiotlurix Suensonii, Vid. Medd. p. 16. 1856. 
Station 45, 101 fathoms, 1 specimen. 
