[ 79 ] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
a single large hooked claw on the outer edge; outer suckers with longer 
pedicels, the horny ring with several small denticles. All the suckers 
have a circle of minute scales or plates around the aperture. Tentacles 
long and slender, the terminal part dilated into a narrow club, with a 
membranous keel; the club is covered with minute denticulated suckers, 
like the outer ones of the sessile arms; smaller suckers extend for some 
distance along the arm; center of the club with one or two larger 
claws, resembling the median ones of the lateral arms, their horny rings 
having a .small aperture, and bearing, on the outside, a large claw-like 
hook. Odontopliore with only five rows of teeth. 
By Dr. J. E. Gray the free eyelids of this species were overlooked, 
and on that account he referred it to the family Loligidcv. H. and A. 
Adams have made the same mistake. Their statement that the siphon 
has no valve is equally erroneous. 
Gonatus Fabricii Stecnstrup. 
Sepia loligo Fabricius, Fauna Grccnlandica, p. 358, 1780 (good description). 
Onycholeutliis Fabricii Lichtenstein, Isis, vol. xix, 1818. 
Moller, Ivroyer’s Tidss.,vol. iv, p. 76,1842. 
Loligo Fabricii Blainville, Diet. Sci. Nat., vol. xxvii, p. 138, 1823. 
Ongchoteuthis? arnocna Moller, Ind. Moll. Gronl., Kroyer’s Tidss., vol. iv, p. 76, 
1842 (young ?). 
Gonatus arnocna Gray, Catal. Moll. Brit. Mus., vol. i, Cephal. Antep.,p. 68, 1849? 
H. & A. Adams, Genera, vol. i, p. 36, pi. 4, fig. 2?). 
Gonatus amccnus G. O. Sars, Moll. Reg. Arct. Norvegiag p. 336, pi. 31, figs. 1-15 
(excellent), pi. xvii,fig. 2 (dentition), 1878. 
Tryon, Man. Conch., vol. i, p. 168, pi. 73, fig. 290(descr. from Gray, fig. from 
H. & A. Adams, Genera?). 
Verrill, Proc. Nat. Mus., vol. iii, p. 362,1880; Trans. Conn. Acad.,vol. v, p. 
237, pi.45, figs. 1-1 b, 2-2 d, Jan., 1881. 
Plate XV, figures 1-lc, 2-2 d. 
Body small, elongated, rather slender, tapering backward; front 
dorsal edge of mantle extending forward in a blunt lobe or angle. 
Caudal fin very short, but broad, nearly twice as broad as long, the 
front edges extending forward beyond the insertion as rounded lobes; 
lateral angles subacute; posterior angle obtuse. Arms stout and rather 
long, the dorsal and ventral pairs stouter than the lateral. Ventral 
arms bear four rows of small suckers; on the others the median rows 
(2 c, 2 d) are larger than the outer ones, with shorter pedicels, and the 
very oblique horny ring, having a small opening, is developed into a 
single, large, hooked tooth on the outer side; around the inner side of 
the aperture there is a partial circle of small flat scales, in several rows. 
The suckers of the outer rows (2 a , 2 b) are about two-thirds as large, 
with longer and more slender pedicels and with lateral apertures; the 
horny ring has about five acute-triangular teeth on the outer margin, 
and there are several rows of small scales forming a broad circle entirely 
around the aperture. The tentacular arms are long and slender, with 
broader clubs, which bear a large number of minute suckers, much like 
