REPORT OF COMMISSIONER OF FISH AND FISHERIES. [102] 
brown ring, very strongly and sharply toothed around the outer portion 
of the edge, and usually with one tooth larger and longer than the rest 
on the middle of the outer margin; inner margin.with much smaller, 
very acute teeth, of unequal size. The teeth are gold-colored at tip. 
Larger suckers of the sessile arms are very oblique, with the rim 
strong, dark brown, bearing large, strong, sharp, much incurved, un¬ 
equal teeth on the outer side of the rim; the inner margin is entire. 
The ventral arms bear about 44 similar suckers, exclusive of the minute 
ones close to the end; the largest ones are situated beyond the middle 
of the arm. The lateral arms bear about the same number of large 
suckers, with numerous minute ones at the tip. The dorsal arms bear, 
each, about 30 suckers, exclusive of the small terminal ones. 
The 22d sucker of the left ventral arm (Plate XVI, tigs. 8, 8 a) has a 
strong, somewhat elliptical rim, with seven strong and very acute in¬ 
curved teeth on the outer side, and with the opposite margin on the in¬ 
ner side smooth for more than a third of the circumference. The median 
tooth on the outer margin is decidedly larger and longer than the others, 
and abruptly bent inward above its base. It is elongated and gradually 
tapered to the very acute tip, but thick and channeled externally at its 
base. To the right and left of this are three similar, but smaller, un¬ 
equal teeth, all strongly curved inward toward the inner margin, but not 
convergent to the center. Of these, the second from the central tooth, 
on each side, is the largest, and the third is the smallest. Between the 
latter and the smooth inner edge there is a small rounded lobe, or blunt 
tooth. Peduncle broad toward the rim, tapering rapidly to the slender 
base. Outer sides of rim much higher than inner. Greater diameter, 
10 mm ; lesser, 7 mra ; greater interior diameter, 7 mm ; total height, 13 mm ; 
longest tooth, 2.5 mm . 
The exposed portion of the upper mandible is black; the point is 
strongly curved, acute, with a smooth cutting edge, separated from the 
inner lobe by a deep, acute notch; inner lobe or edge of aim thin, 
broadly rounded, with a slightly rounded, uneven edge. Length of 
mandible, 29 mm ; distance from bottom of notch to tip, 10 rara ; internal 
breadth between lobes, 8 mm . 
The lining membrane of the palate (Plate XVI, fig. 2) is pale, trans¬ 
lucent, covered with rather large, whitish, translucent teeth, variable 
in form and size, but mostly rather broad at base and tapering to an 
obtuse tip; some are more slender and acute. Xo granules were de¬ 
tected on the membrane. 
The odontophore (Plate XVI, figs. 3-7) was too much injured to show 
its general form, but it appeared to resemble that of A. Harveyi. The 
lateral membrane was broad in the middle, translucent, white. Xo 
plates outside the lateral teeth could be detected. The teeth all have 
slender, acute tips. The median teeth have three points of nearly equal 
length; the inner lateral ones have two points, the outer one somewhat 
shorter and smaller than the other; the two outer lateral teeth are sim- 
