REPORT OF COMMISSIONER OF FISH AND FISHERIES. [116] 
to have been wider, with the edges infolded, so as to form a sort of far¬ 
row on the outer side, but the suckers are mostly gone, and it is too. 
much injured to be accurately described. Tentacular arms long, more 
than twice the combined length of the head and body, slender, round, 
gradually tapering to the tip, like a whip-lash, the distal half of their 
length covered with very numerous, crowded, minute, pediceled suckers 
(fig. 2 &), which cover nearly the entire surface along the terminal por¬ 
tion, leaving only a narrow naked line along the back, but farther from 
the tip this naked space becomes gradually wider and the band of suck¬ 
ers narrower, and after these crowded bands of suckers cease, scattered 
suckers, placed mostly two by two, extend for some distance along the 
proximal part of the arms. The suckers of the tentacular arms are so 
small that their form cannot be seen with the naked eye; they are deep, 
cup-shaped, with a small circular aperture, supported by a horny rim, 
which is often armed with two or three sharp teeth on one side (fig. 2 c). 
Color of body and arms, so far as preserved in alcohol, deep brownish 
orange; on the upper side of the back and caudal fin the color is better 
preserved, and shows small, occellated, circular spots of orange-brown, 
with an inner circle of whitish and a central spot of purplish brown. 
Similar spots also exist on the head and arms, and also on the lower side 
of the body, where the color is best preserved. 
A considerable amount of a bright orange oily fluid, insoluble in alco¬ 
hol, exuded from the viscera. Examined by means of the spectroscope 
this fluid absorbed .part of the green, all of the blue, and most of the 
violet rays. The stomach contained fragments of small Crustacea. The 
pen is pale yellow, thin, and slender anteriorly, with two sublateral 
costse, and narrow delicate margins outside the cost®; in the middle it 
becomes still thinner and narrower, with the margin inrolled; farther 
back the margins become much wider and then unite together ventrally, 
forming a long, hollow, conical portion, extending to the acute posterior 
tip; this portion is not so broad as deep, and has a slight dorsal keel 
and a ventral groove. 
Measurements. (In millimeters). 
Sex 
Male. 
Male. 
Total length to end of sessile arms. 
Head and body combined.. 
Length of body. 
Length of caudal fin, from origin... 
Breadth of caudal fin. 
Breadth of body. 
Length of dorsal arms. 
Length of second pair of arms.... 
Length of third pair of arms. 
Length of ventral arms. 
Length of tentacular arms. 
Breadth of dorsal arms, at base... 
Breadth of ventral arms. 
Breadth of tentacular arms. 
Diameter of eye. 
Length of pen. 
Breadth of pen anteriorly. 
Breadth of pen posteriorly. 
Depth of pen posteriorly. 
137 
59 
46 
30 
42 
15 
24 
33 
34 
80 
3 
6 
2 
7.5 
232 
122 
99 
CO 
75 
23 
45 
60 
60 
112 
312 
4 
7 
4 
9 
198 
2.25 
2.50 
4.50 
