[215] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
any such spoon-shaped appendage as is found in the preceding species, 
Buccal membrane large, with a free thin edge which scarcely forms 
angles. 
Pen (fig. 3a) with a narrow, linear anterior portion, consisting of more 
than half its length, decreasing in width backward, then suddenly ex- 
panding into the posterior portion, which is broad and thin, and infolded, 
so as to form a large, compressed posterior cavity; the anterior portion 
is concave beneath, with no mid-rib, the edges ex-curved and slightly 
thickened; when spread out and flattened the posterior portion has a 
lanceolate form, rather abruptly widening anteriorly and very gradually 
tapering backward, with a double midrib, and some delicate lines par- 
allel to it, while the lateral expansions are very thin and delicate. 
The teeth on the odontophore (Plate XLY, fig. 3b) form seven rows: 
the median ones have a large, acute, central, and two small lateral den- 
ticles; the inner lateral teeth have a large, acute inner denticle, and 
a very small outer one; the next to the outer teeth are somewhat stouter 
than the outermost, which are very acute and strongly curved; no mar- 
ginal plates were observed. 
Color of body mostly destroyed, in the typical specimens, but small, 
light purplish brown chromatophores are uniformly scattered over the 
parts best preserved; this is also the case on the head, siphon, and outer 
surfaces of the arms, where the skin is well preserved; scattered spots 
also occur on the inner surfaces, between the suckers. 
The male described above has the mantle 62™" long; length of caudal 
fin, 31; its breadth, 36; end of tail to base of arms, 85; length of dor- 
sal arms, 26; of second pair, 48; of third pair, 45 + (tips gone); of fourth 
pair, 35; of tentacular arms, 118; of sucker-bearing portion of club, 16; 
breadth of tentacular arms, 2; of club, 4; of lateral arms, at base, 3.5; 
of ventral arms, 3; diameter of eye-ball, 8; of largest suckers of 
lateral arms, 1.2; length of pen, 62; of anterior, narrow portion, 38; 
its breadth anteriorly, where widest, 2; where narrowest, 1.25; length 
of posterior portion, 24; its breadth, 8™™. 
The supposed female has lost the tail, but the arms are in better con-, 
dition than those of the male; it differs from the male in having dis- 
tinctly smaller suckers on the lateral arms. Length of dorsal arms, 
27™m; of second pair, 44; of third pair, 46; of fourth pair, 37; of ten- 
tacular arms, 120; of club, 16™™. 
A larger specimen (station 994), which has lost its head and pen and 
therefore cannot be positively identified, has a much darker color. It 
is dark purplish brown over the whole body. 
Two typical specimens were obtained off Martha’s Vineyard, at sta- 
tions 1031 and 1033, in 255 and 183 fathoms; one, of doubtful identity, 
at station 994, in 368 fathoms, by the U. S. Fish Commission, in 1881. 
All three were from fish-stomachs. 
This interesting species was named in honor of Dr. T. H. Bean, the 
ichthyologist, who took charge of the fishes on the “Fish Hawk” this 
season. 
