[ 33 ] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
nearly parallel with the midrib, but after the first 3 inches they diverge 
quite regularly to the point, at 25 inches from the end, beyond which we 
cannot trace them', until they reappear in the first part of the anterior 
section, where they are quite small and soon fade out entirely, at some 
distance from the extreme end. Near the posterior end, between the 
principal cost® and the margin, there are on each side two additional 
cost®, much less distinct, and many faint radiating lines. But these di¬ 
verge more rapidly, and mostly run into the margin at G to 8 inches from 
the posterior end. The anterior portions and posterior portions are pale 
yellow or bluff, 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 
cost®. 
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 .35 of an inch broad, run¬ 
ning through the center, but without any lateral cost®. 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 undetermined for the present. The ante¬ 
rior section is quite incomplete, but is over 10 inches long, and shows 
an extreme width of about 6 inches, or 5.75 where the lateral cost® dis¬ 
appear. Some of the fragments extend forward 8 inches or more be¬ 
yond that point, 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 an¬ 
terior margin. 
To this species I refer, with some doubt, the tentacular arm of No. 2, 
preserved in the museum of Saint John’s, Newfoundland. It agrees essen¬ 
tially in form and size, as will be seen from the description and meas¬ 
urements, with the corresponding arms of No. 5. Still, it must be re¬ 
membered that, as yet, no reliable distinctions have been made out 
between the tentacular arms of A. Harveyi and A. princeps. 
The total length of the tentacular arm of No. 2 was estimated at 30 to 
35 feet. The portion saved measured, when fresh, 579.12' m (19 feet). The 
circumference of the slender portion was 9 rm to 10' m ; of the enlarged 
sucker-bearing part, 15.24 <m (G inches); length of the part bearing 
suckers, 7G.2 cm (30 inches); diameter of the largest suckers, 3.17 cm (1.25 
inches). Calculating from the photograph, the portion bearing the larger 
suckers was about 45.7 cm (18 inches) in length, and about G.35‘ m (2.5 
inches) broad across the face; distance between attachments of large 
suckers, 4.27'" 1 (1.G8 inches); outside diameter of larger suckers, 2.95 cm to 
3.18 cm (1.16 to 1.25 inches); inside diameter, 1.86 c,n to 2.54 m (.74 to 1 inch); 
diameter of the small suckers of the outside rows, 1.02 cm to 1.22 cm (.40 to 
.48 of an inch). Mr. Harvey afterwards sent to me a full series of meas- 
