[67] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
orly. The portion of the pen (of No. 2) preserved* and forwarded to 
me includes all the cone and a part of the posterior end of the quill-por- 
tion, attached within the concavity of the cone (Plate XIV, fig. 7). 
The anterior end of the cone is concave and very obliquely terminated, 
the dorsal side extending forward some distance along the dorsal side 
of the quill. The whole length of the preserved cone (doubtless much 
shrunken by the alcohol) is 44.5 (17.5 inches); of the oblique anterior 
termination 15,25 (6 inches); greatest diameter 4°" (1.6 inches). The 
cone is nearly round, firm, translucent, brownish or deep amber-color, 
and composed of numerous distinct concentric layers. The concavity of 
the anterior end firmly embraces the remnant of the funnel of the quill, 
which has numerous small cost converging to the apex; two of the 
dorsal cost are much stronger than the rest, forming a strong ridge 
each side of the smaller median costa, which lies in a deep median de- 
pression or furrow. 
The tentacular arms had lost their clubs; but the part remaining was 
cylindrical, 2.5 inches in diameter. The other arms were somewhat 
thicker. The few suckers remaining on them were attached by slender 
pedicels, and arranged in two alternating rows; they were furnished 
with horny rims having the edge entire, except where irregularly broken 
away ; those of the distal part of the arms were gone. 
The portion of the arm of the second specimen preserved in alcohol 
and sent to me came from the base of the left ventral arm. It is 65°" in 
length; diameter from inner to outer surface, not including marginal 
membrane, 45""; including membrane, 64"". It is well rounded on the 
inner face, but more flattened on the upper side, while the outer surface 
is broadly rounded; the outer angle has a strong, thick marginal mem- 
brane, 19™" wide (see section of this arm, Plate XIV, fig. 8,c¢). The 
sucker-bearing surface is broad, with a slight marginal membrane along 
each margin (b, b'), rising into broad, flat, somewhat thickened, blunt 
lobes alternating with the suckers. Two alternating rows of firm, 
smooth, rather irregular-shaped tubercles run along the median region, 
between the rows of suckers, with which they alternate, on each side. 
This segment of the arm still bears five suckers, which appear to rep- 
resent the first, second, and fourth pairs, though there may possibly 
have been others before the first of these. They are all similar, rather 
small in proportion to the arm, round, but little oblique, decidedly con- 
vex beneath, and with a rather long, slender pedicel (fig. 8, a). The 
horny marginal rings are dark brown, yellowish at the thin edge, which 
is entire and nearly smooth, except where broken. The largest of these 
remaining suckers dre 8.5" in diameter outside; aperture, 5°"; height 
of cup, 7"; length of pedicel, 3™™. 
*Mr. Dall states that’ he attempted to dry the rest of this pen, and that of No. 3, 
but they turned brown, and then black, effloresced, and decomposed. He also states 
that the pen, when fresh, was translucent whitish, and that it changed to brownish 
yellow in the alcohol. 
