546 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [44] 
subtrancate in the middle, the inner edge nearly straigbt or slightly 
angulated ceutrally. Mouth-shieids strongly four-lobed, the inner angle 
acute, with concave sides, the lateral lobes prominent, subacute, the 
outer lobe smaller, obtuse, extending somewhat on the interbrachial 
area; side mouth-shields wide, not very long, somewhat crescent- 
Shaped, the outer margin convexly arched to fit the concave sides of 
the mouth shield. Mouth-papille mostly flat and broad, lanceolate or 
obtuse, three or four on each side besides the infradental; a slender, 
smaller one often stands out of line, back of the outermost, which is 
flatter and more obtuse than the others. Color yellowish brown, with 
darker blotches on disk and arms. Diameter of disk, 9"; length of 
arms, 35°". Station 2069, in 101 fathoms, off Nova Scotia. Peculiar in 
the mixture of sharp spines and obtuse thorny stumps on the disk. 
General appearance much as in O. bidentata. 
Ophiacantha granulifera Verrill. 1885. 
b. range, 101 to 200 fathoms, off Nova Scotia. 
Disk five-lobed, covered with small rounded and conical, slightly 
rough granules; radial shields form ten rather prominent ridges, naked 
only at the rounded and prominent outer end; interbrachial spaces be- 
neath scaly, with few granules. Arms rather broad. Arm-spines eight 
to nine at base of arms, the rows not approximating dorsally; the upper 
ones are long, very slender, acute, slightly roughened ; the middle onesare 
stouter and distinctly thorny; the lower ones much shorter; tentacle- 
scale small, lanceolate, subacute, except on the two first joints, where 
they are obtuse and flattened, and sometimes two together; side arm- 
plates broadly united ventrally; ventral arm-plates unusually broad 
and short, especially on the second to seventh joints, where they are 
transversly oblong, the outer margin nearly straight or slightly emar- 
ginate, the inner edge with a slight median angle; farther out they be- 
come longer, narrower, and somewhat trapezoidal. Mouth-shieldssmall, 
somewhat cruciform, with a small outer lobe, an obtuse inner angle, and 
with acute lateral lobes. Side mouth-shields larger, broad, strongly 
curved, thickened, and minutely granulose. Mouth-papille all spini- 
form, three or four on each side, besides a larger one below the teeth. 
Color light brownish yellow, with darker blotches on the arms. Diamn- 
eter of disk, 9°" to 11™™, Easily distinguished by the short, wide, 
ventral arm-plates and the small, close, granules on the disk. 
Ophiacantha enopla Verrill. 1885. 
B, range, 351 to 640 fathoms, 1882, 1883. 
Hasily distinguished by hayjng numerous moutkh-papille, the outer 
ones forming a crowded group at the end of the mouth-angles. The 
disk is covered with small obtuse or rounded granule-like stumps, 
slightly spinulated at the end. The arm-spines are long and slender, 
glassy, seven or eight near the base of the arms, forming a nearly con- 
tinuous band on the dorsal side. Color in life, orange. 
