. REPORT OF COMMISSIONER OF FISII AND FISHERIES. [192J 
of arms, 112 and 105; of second pair, 103 and 90; of third pair, 112 and 
100; of fourth pair, 94 and 97; breadth of those of the three upper 
pairs, 8; of the ventral pair, 7 mm . 
Male: Body depressed, rounded posteriorly, with only a trace of a 
lateral and posterior fold; surface soft and nearly smooth, but showing 
a small number of rniuute white papillae sparsely scattered over the 
dorsal surface. Cirrus above the eye small and simple, usually con¬ 
tracted into a small wart-like papilla. Head broad and flattened ; eyes 
large. Arms rather long and slender, with slender tapering tips, their 
bases united by a rather wide web. Suckers small, very prominent, 
forming two regular rows quite to the base. 
The first two pairs of arms are nearly equal and somewhat longer 
than the two lower pairs, which differ but little between themselves. 
The hectocotylized arm (third of right side) bears thirty five suckers, in 
two rows, and a remarkably large, terminal spoon-shaped organ, which 
occupies more than a third of the total length of the arm; its sides are 
bent up and the edges inrolled, so as to form a deep cavity; its outer 
end is broadly rounded laterally, and terminates in a central, narrow, 
acute lobe; internally there are nine large, high, oblique lamellse, with 
deep fossse between them ; the proximal end has a large, acute, triangu¬ 
lar lobe, with involute margins; from this lobe a broad groove extends 
along the lower edge of the arm to the margin of the web; where it 
terminates there is a distinct thickening of the bounding membrane. 
The two males of this species, described above, were dredged by Mr. 
Agassiz, on the Blake, in 1880, in 4G4 and 603 fathoms. They agree 
well in the peculiar characters and large size of the appendage of the 
hectocotylized arm. The females only were previously known. Al¬ 
though these males have a mere trace of the loose membranous fold of 
skin, along the sides and around the posterior end, so conspicuous in 
the original female specimen of this species, they agree so well in other 
characters that I unite them without much hesitation. It is probable 
that the presence or absence of the membranous fold, in this and other 
species, may be due merely to differences in the state of contraction 
when they die, or even to differences in the strength of the alcohol. 
Measurements in millimeters. 
Right side, d 
Left side. 
Total length. 
Posterior end to center of eye . 
Eye to tip of dorsal arms. 
Breadth of body. 
Breadth of head . 
Length of dorsal arms from mouth .. 
Length of second pair from mouth .. 
Length of third pair from mouth .... 
Length of hectocotylized arm from 
mouth. 
Length of fourth pair. 
Length of spoon-shaped appendage.. 
Breadth of the same. 
95 
34 
64 
28 
22 
65 
61 
52 
58 
23 
16 
cf 
Right side. $ 
Left side. 
194 
40 
32 
112 
103 
112 
105 
96 
106 
94 
97 
? 
