A. E. Verrill — North American Gephalopods. 
291 
suckers with larger pedicels, the horny ring with several small denti- 
cles. 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 ; cen- 
ter of the club, with one or two larger suckers, resembling the median 
ones of the sessile arms, their horny rings having a small aperture, 
and bearing, on the outside, a large claw-like hook. 
Gray overlooked the free eyelids in this genus, and on that 
account placed it with Loligo. 
G-onatus Fabricii Verrill. 
Sepia loligo Fabricius, Fauna Groenlandica, p. 358, 1780, (good description). 
Onychoteuihis Fabricii Lichtenstein, Isis, xix, 1818, (t. Gray). 
Moller, Kroyer’s Tidss., iv, p. 76, 1842. 
Loligo Fabricii Blainville, Diet. Sci. Nat., xxvii, p. 138, 1823. 
Onychoteuthis ? amcena Moller, Ind. Moll. Gronl., Kroyer’s Tidss., iv, p. 76, 1842, 
(young.) 
Goaalus amoena Gray, Catal. Moll. Brit. Mus., i. Cepbal. Antep., p. 68, 1849. 
Gonatus amcenus G. 0. Sars, Moll. Reg. Arct. Norvegise, p. 336, pi. 31, figs. 1-15 
(excellent); pi. xvii, fig. 2 (dentition), 1878. 
Tryon, Man. Conch., i, p. 168, pi. 73, fig. 290, (descr. from Gray, fig. from H. & A. 
Adams, Genera). 
Verrill, Proc. Nat. Mus., iii, p. 362, 1880. 
Plate XLV, figures 1-15, 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. 
All the arms bear four rows of small suckers; those of the two 
median rows (2c, 2 cl) 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 (2a, 2b) 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 
Trans. Conn. Acad., Vol. V. 36 January, 1881. 
