128 A. E. Verrill—Cephalopods of the North Atlantic. 
to the tip, which is flat, blunt, and slightly incurved. Just 
beyond the large suckers, where this region begins, the circum- 
ference is 8° inches. The face is narrow and bears a large 
number of smal] serrate and pedicellate suckers, arranged m 
four regular alternating rows, and gradually diminishing in size 
to the tip of the arm, where the rows expand into a small clus-’ 
ter. These suckers are much like the marginal ones of the pre- 
vious division, and at first are about ‘25 of an inch in diameter, 
but decrease to about ‘10 of an inch near the tip of the arm. 
The color, where preserved, is pale reddish, with thickly scat- 
tered small spots of brownish red. 
The form of the jaws of this specimen is well shown by plate 
Ill, figs. 3and 4. When in place, these jaws constitute a power- 
ful beak, looking something like that of a parrot or hawk, ex- 
cept 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 UI, 
fig. 8) measures 8°85 inches in total length; 1 inch in greatest 
breadth ; and 2°50 from front to back. The lower jaw (fig. 4) 
is 3 inches long, 2°75 broad, and 2°65 from front to back. 
The small squids of our coast have a very similar pair of 
jaws. Those of Loligo pallida (plate tv, figs. 5, 5a) are here 
figured twice the natural size, for comparison and to explain 
the terms used in describing the large jaws. 
The most remarkable anatomical character observed in this — 
specimen is found in the form and arrangement of the teeth om 
the “lingual ribbon,” or odontophore, for in this respect it differs 
widely from all other known Cephalopods. 
The ordinary squids and cuttle-fishes all have these teeth 
arranged in seven regular longitudinal rows ; those of the three 
middle rows being generally two or three-pronged, as in Loli? 
pallida (plate tv, fig. 7), while the lateral rows have lone 
simple, fang-like teeth. But in this species (fig. 6) the <I 
i roa 
or less rounded, flattened base, and all are considerably curved; 
- some are broad and tapering; others are slender and ea 
i g 
among the teeth, and similar grains are embedded in the 
membrane lining the mouth. This peculiar type of dentitio? 
must be regarded as an extremely generalized one. 
