REPORT OF COMMISSIONER OF FISH AND FISHERIES. [30] 
to near the tip of the arm, where the rows expand into a small cluster 
of about ten smooth-edged suckers. The suckers, except in the final 
group, are much like the marginal ones of the previous division, and at 
first are 5™" to 7™™ in diameter, but decrease to about 2.5"" near the tip of 
the arm. They have sharply serrate, oblique, marginal rings, higher 
on the outer side, with a peripheral groove on the inner and lateral sides 
only. In our preserved specimens the rings are gone from many of these 
small suckers, but those of the two rows next to the lower margin appear 
to have been larger than the others. 
The suckers of the final group are close to the tip, which is slightly 
recurved over them. They are flat, attached to short pedicels, and pro- 
vided with a narrow horny rim, which has the edge smooth, or nearly so, 
and surrounded by a thick membranous border. The diameter of these 
suckers is from .5™ to 2"™. They are rather crowded, and the cluster is 
broader than long. 
‘The color of the body and arms, where preserved, is pale reddish, with 
thickly scattered, small spots of brownish red: . 
The form of the jaws* of this specimen is well shown by Plate III, 
figs. 1, 2. When in place the tips of these jaws constitute a powerful 
beak, looking something like that of a parrot or hawk, except that the 
upper jaw shuts into the lower, instead of the reverse, as in birds. The 
color is dark brown, becoming almost black toward the tip, where its 
substance is thicker and firmer, and smoothly polished externally. The 
upper jaw (Plate III, fig. 1), in 1875, measured 79"" in total length, 
25" in transverse breadth, and 66°" in breadth or height. The lower 
jaw (fig. 2) was 76™ long, 70"" transversely, and 67™™ broad, vertically. 
It was larger when first received, but has subsequently shrunk con- 
siderably more, in alcohol. 
The upper mandible has the rostrum strong, convex, acute, and 
curved considerably forward, with concave cutting edges, and a slight 
notch at its base. The anterior edges of the ale are irregular and 
uneven. The palatine lamina is broad and thin. 
The lower mandible has the rostrum stouter and less curved, the tip 
acute, with a distinct notch just below the tip, the cutting edges nearly 
straight, and with a moderately deep and rather narrow notch at its 
base; a ridge runs backward from near the tip, in a curved line, cir- 
*In order to explain the terms employed in describing the various parts of the jaws 
of Cephalopods, as used in this article, I have introduced figures of the jaws of one of 
our common small squids (Loligo pallida V.) from ue 2. 
Long Island Sound. The nomenclature adopted is 
essentially that used by Professor Steenstrup. 
Fig. 1. Upper mandible: a, rostrum or tip of the 
beak; b, the notch; c, the inner end of ala; d, the 
frontal lamina; e¢, the palatine lamina; ab, the cut- 
ting edge of beak; bc, anterior or cutting edge of 
ala. 
Fig. 2. Lower mandible: a, rostrum; ab, cutting edge; be, anterior edge of ala; d, 
mentum or chin; e, gular lamina. 
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