208 A. E. Ve)'7'ill — JVorth Anierican Cephalopods. 



the extreme end. Near the anterior end, between the principal 

 costa^ and tlie margin, tliere are two additional costae, much less dis- 

 tinct, and many faint radiating lines on each side. But these diverge 

 more rapidly and mostly run into the margin at six to eight inches 

 from the anterior end. The anterior portions and posterior portions 

 are pale yellow^ or baft", fading to whitish at the thin margins, and 

 deepening into pale amber at the midrib. Their substance is flexible, 

 translucent, and very thin — scarcely thicker than parchment, except 

 at the midrib and costae. 



The third section evidently came from the middle region, where 

 the shell was thickest and broadest. This piece is 7'50 inches long, 

 and 4*10 broad, with a strongly convex midrib, '30 to 'So of an inch 

 broad, running through the center, but without any lateral costae. 

 In this portion the shell is much thicker and firmer than in the others, 

 and of a decided brownish yellow, or dull amber-color, but quite 

 translucent ; it is finely striated with close, nearly parallel lines. 

 The breadth and form of this middle portion must remain undeter- 

 mined, for the present. The posterior section is quite incomplete, but 

 is over ten inches long, and shows an extreme width of about six 

 inches, or 5-75 where the lateral costae disappear. Some of the frag- 

 ments extend backward eight inches or more beyond that i)oint, and 

 gradually fade out, both at the ends and lateral margins, into a 

 white, soft but tough, fibrous membrane. So far as this portion is 

 preserved, it indicates a broadly rounded and ill-defined posterior 

 termination. 



To tliis species I refer, with some doubt, the tentacular-arm of Xo. 

 2, preserved in the museum of St. John's, Newfoundland. It agrees 

 essentially in form and size, as will be seen from the description and 

 measurements, with the corresponding arms of No. 5. Still it must 

 be remembered that, as yet, no reliable distinctions have been made 

 out between the tentacular-arms of A. Han^eyl and A. princeps. 



The total length of the tentacular-arm of No. 2 w.as estimated at 

 30 to 35 feet. The portion saved measured, when fresh, 579'12'^^''- (19 

 feet). The circumference of the slender portion was 9 to lO*"'" ; of 

 the enlarged sucker-bearing part, 15-24'^^'" (6 inches) ; length of the 

 part bearing suckers, 76-2°"' (30 inches); diameter of the largest 

 suckers, 3-17"" (1*25 inches). Calculating from the photograph, the 

 portion bearing the larger suckers was about 45-7*^'" (18 inches) in 

 length, and about 6-35'='" (2*5 inches) broad, across the face; distance 

 between attachments of large suckers, 4*27'^'" (1*68 inches) ; outside 

 diameter of larger suckers, 2*95 to 3-18''" (ri6 to 1-25 inches) ; inside 



