224 A. JS. Verrill — North American Cephalopods. 



lid-like margins. The eyes are large, prominent, oblong, and naked ; 

 the anterior portion is swollen laterally on both sides. The short 

 arms are trapezoidal, the doi'sal ones somewhat shorter (about 1"25 

 inch) and smaller than the othei'S, which are nearly equal in length, 

 the second pair being stouter than the rest, and a little longer. The 

 dorsal arras have a slightly prominent membrane along the outer 

 angles ; the subdorsal or upper lateral arms are narrowed to an acute 

 edge or crest on the outer angle, but on the inner angle have a broad, 

 thin, marginal membrane, outside the suckers. The lower lateral 

 arms are similar in size and form, and also have a very broad, lateral, 

 marginal membrane, next to the suckers, on the lower side. The 

 ventral arms are more slender and a trifle longer, and have narrower 

 marginal membranes. Tlie tentacular-arms are slender, elongated, 

 expanded toward the tip, and have suckers arranged much as in the 

 gigantic species, even to the smooth-edged suckers and opposing 

 tubercles, proximal to the large suckers, as I have described them in 

 A. Harveyi. The sucker-bearing portion is margined by a membrane 

 on each side. 



The small proximal suckers of the tentacular-arms occupy about 

 44.5mm (1-75 inches) at the commencement of the terminal club; they 

 are about 1-5'""' in diameter, circular, regularly cup-shaped, with a 

 nearly even, smooth rim ; they are raised on slender pedicels. Alter- 

 nating with these are smooth rounded tubercles, which are also on 

 pedicels and slightly larger than the intervening suckers. There are 

 four suckers and four tubercles in the row along the inner margin ; 

 along the outer margin there are fewer, smaller suckers, but without 

 horny rings ; if they originally had such rings they were probably 

 smaller than the others. Tlie large suckers (Plate XXI, fig. 9), 

 forming the two central rows on the terminal club, are furnished 

 with a somewhat oblique, dark brown ring, very strongly and sharply 

 toothed around the outer portion of the edge, and usually Avith one 

 tooth larger and longer than the rest, on the middle of the outer 

 margin ; inner margin with much smaller, very acute teeth, of unequal 

 size. The teeth are gold-colored at tip. 



Larger suckers of the sessile arms are \Qxy oblique, with tiie rim 

 strong, dark brown, bearing large, strong, sharp, much incurved, une- 

 equal teeth on the outer side of the rim ; the inner margin is entire. 

 The ventral arms bear about 44 similar suckers, exclusive of the 

 minute ones close to the end ; the largest ones are situated beyond 

 the middle of the arm. The lateral arms bear about the sanu' num- 

 ber of large suckers, with numerous minute ones at the tip. The 



