[70] CEPIIALOPODS OF NORTHEASTERN COAST OF AMERICA. 289 



a single large hooked claw on the outer edge; outer suckers with longer 

 pedicels, the hcrny 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. Odontophorc 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 Loligidce. II. and A. 

 Adams have made the same mistake. Their statement that the siphon 

 has no valve is equally erroneous. 

 G-onatus Fabricii Steenstrup. 



Sepia loligo Fabricius, Fauna Groenlandica, p. 358, 1760 (good description). 



Onychoteuthis Fabricii Lichtenstein, Isis, vol. xix, 1818. 

 Moller, Kroyer'sTidss.,vol. iv,p. 7(5, 1842. 



Loligo Fabricii Blahrville, Diet. Sei. Nat., vol. xxvii, p. 136, 1823. 



Onychoteuthis:' amcena Moller,Ind. Moll. Gronl., Kroyer's Tidss., vol. iv, p. 76, 



1842 (young?). 



Gonatm amecna Gray, Catal. Moll. Brit. Mns., vol. i, Cephal. Antep.,p. 08, 1849? 



H. & A. Adams, Genera, vol. i,p. 36, pi. 4, fig. 2?). 

 Gonatm amcenusG. O. Sars, Moll. Rot;-. Arct. Norvegise, i>. 335, pi. 31, figs. 1-15 

 (excellent), pi. xvii,fig. 2 (dentition), 1878. 

 Tryon, Man. Conch., vol. i, p. l<i v , pi. 7:'., fig. 290 (descr. from Gray, fig. from 



II. & A. Adams, Genera .'). 

 Verrill, Proc. Nat. Mns., vol. iii, p. 332,1830; Trans. Conn. Acad., vol. v, p. 

 237, pl.45, figa. 1-1 6, 2-2 d, Jan., 1631. 



Plaf XV. figures 1-lc, 2-2d. 



Boily 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 ou the outer side; around the inner side of 

 the aperture there is a partial circle of small fiat scales, in several rows. 

 The suckers of the outer rows (2 «, 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 abroad 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 

 S. mss. 59 19 



