126 A, E. Verrill—Cephalopods of the North Atlantic. 
breadth about 15 inches; width of lateral lobes 6 inches. The 
eight shorter arms, when fresh, were, according to Mr. Harvey's 
measurements, six feet long and all of equal length, but those 
of the different pairs were respectively ten, nine, eight and 
seven inches in circumference. They are three-cornered or 
triquetral in form and taper very gradually to slender acute 
tips. Their inner faces are occupied by two alternating rows 
of large obliquely campanulate suckers, with contracted aper- 
tures surrounded by ined, oblique, marginal rings, armed 
with strong, acute teeth around their entire circumference, but 
largest and most oblique on the outside (plate fig, fig. 1 
These suckers gradually diminish in size to the tips of the 
arms, where they become very small, but are all similar m 
form and structure. The largest of these suckers are said by 
Mr. Harvey to have been about an inch in diameter, when 
fresh. The largest of their marginal rings in my possession are 
‘65 of an inch in diameter at the serrated edge, and ‘75 be: 
neath. The rings of the smaller suckers are more oblique and 
more contracted at the aperture, with the teeth more inclined 
inward, those on the outside margin being largest. The two 
long tentacular arms are remarkable for their slenderness and 
eet length when compared with the length of the body. Mr. 
arvey states that they were each 24 feet long and 2°75 inches 
in circumference when fresh. In the brine and alcohol they 
have shrunk greatly, and now measure only 13°5 feet in length, 
while the circumference of the slender portion varies from 225° 
to 825 inches. These arms were evidently highly contractile, 
like those of many small species, and consequently the length 
and diameter would vary greatly according to the state of con- 
traction or relaxation. The length given (24 feet) probably 
represents the extreme length in an extended or flaccid condi 
tion, such as usually occurs in these animals soon after death. 
The slender portion is three-cornered or triquetral in form, with 
the outer angle round, the sides slightly concave, the late 
angles prominent, and the inner face a little convex and gene 
rally smooth. ‘ 
The terminal portion, bearing the suckers, is 80 inches @ 
angles, and gradually increases up to the maximum size, thé 
inner face being convex and bearing about forty irre, arly 
scattered, small, flattened, saucer-shaped suckers, attact ed by 
very short pedicels, and so placed in depressions as to rise ut 
little above the general surface. They have narrow mar 
