A, E. Verrill—North American Cephalopods. 217 
height or breadth of rim, 11™™; least height, 8"; breadth of groove, 
6 to 2". 
The marginal suckers (Plate XVII, 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 ob- 
liquely 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 bevelled edges and a 
thickened median ridge or tubercle. The largest ring examined was 
14™" in diameter, height or breadth of back side of rim, 8"; of front 
side, 3°5™™. 
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 
outward and upward. Greatest diameter of the one described, 6"" ; 
height of back side of rim, 4™™ ; of front side, 1°5™". 
The small terminal group of smooth-rimmed suckers, seen in No, 5, 
were not noticed, but they were not looked for specially. 
To this species I have also referred the specimen (No. 13) from 
Grand Bank, Fortune Bay, (see page 188, where the general meas- 
urements 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 
Rey. M. Harvey. They had been dried, and the jaws, which 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 off. Although these jaws had undoubt- 
edly shrunken considerably, 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 de- 
crease in some of the dimensions amounts to 20 per cent., while even 
TRANS. Conn. AcaD., Vou. V. 28 FEBRUARY, 1880, 
