[ 47 ] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
The marginal suckers (Plate IX, fig. 10), alternating with the large 
ones on the club, are very oblique, with the rings strong and very one¬ 
sided, the height of the back being more than twice that of the front 
margin. The aperture is not circular, the outer portion of the margin 
being incurved or straight. The groove below the margin is narrow 
and deep, especially on the sides, but only extends around the front 
and sides, being entirely absent on the outer third of the circumference. 
The denticles are about 22 to 24, slender, acute, not crowded, the most 
of them being separated by spaces greater than their breadth at base. 
The outer ones are strongly incurved; those along the sides are curved 
forward obliquely toward the front margin, while those on the front 
margin point upward and sometimes rather outward. The denticles 
are of nearly equal length, but those of the front margin are both more 
slender and more acute; they all have sharp, beveled edges and a 
thickened median ridge or tubercle. The largest ring examined was 
14 mm in diameter; height or breadth of back side of rim, 8”’ m ; of front 
side, 3.5 mm . 
The small suckers, covering the last division of the club, are very 
similar to the marginal ones last described, except that they are much 
smaller and more delicate, with a narrower and less oblique rim. The 
denticles of the inner margin are very acute, and point obliquely out¬ 
ward and upward. Greatest diameter of the one described, G mm ; bight 
@f back side of rim, 4 mm ; of front side, 1.5 mm . 
The small terminal group of smooth rimmed suckers, seen in Xo. 5, 
were not noticed, but they w r ere not looked for specially. 
To this species I have also referred the specimen (Xo. 13) from Grand 
Bank, Fortune Bay (see p. 12, where the general measurements are 
given). Fortunately, Mr. Simms was able to obtain the jaws in pretty 
good condition, and also one of the largest suckers of the tentacular 
arms. These specimens were forwarded to me by the Rev. M. Harvey. 
They had been dried, and the jaws, wRicli were still attached together 
by the ligaments, had cracked somewhat, but all parts were present 
except the posterior end of the palatine lamina, which had been cut or 
broken otf. Although these jaws had undoubtedly shrunken consider¬ 
ably, even when first received, they were afterwards put into alcohol 
and have since continued to shrink, far more than would have been 
anticipated, so that, at present, the decrease in some of the dimensions 
amounts to 20 per cent., while even the harder portions have decreased 
from 5 to 10 per cent, from the measurements taken when first received 
by me.* When first received, in 1875, the upper mandible measured 
* There is no reason to suppose that the shrinkage has been any more in this case 
than in the others, but I have not had an opportunity for making comparative meas¬ 
urements from the same specimens -when recently preserved, and again after long 
preservation in alcohol, except in one other instance (No. 5), in which a similar 
shrinkage was evident. (See table of measurements, p 22.) 
