[09] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 

 Table of measurements (in inches). 



279 



Total length (to mutilated ends of tentacles) 

 Base of arms to tip of tail (head and body) . . . 



Base of arms to edge of mantle (head) 



Edge of mantle to tip of tail (body) 



Length of tail-fins (insertion to tip) 



Breadth of tail-fins 



Length of ' pen ' 



Breadth of pen, in middle 



Length of tentacular arms (ends gone) 



Length of longest sessile arms (ends gone) .. 



Diameter of body 



Breadth between insertions of fins 



Diameter of eye 



No.l. 



40 



30 + 

 30 + 



7.5 



No. 2. 



110 + 



67 



6 



61 



33.75 

 25.5 

 60 



43 + 

 23.5 + 



3.5 



1 



No. 3. 



167 + 



102 

 10.5 

 91.5 

 48 

 42 

 89 



12.25 

 61 + 

 40 + 

 18 

 5 

 1.25 



The generic affinities of this species must be regarded as still some- 

 what doubtful, owing to the absence of the tentacular clubs, and most 

 of the suckers of the sessile arms. The characters of the ' pen ; ' of 

 the dentition, especially of the median teeth; of the nuchal frills; of 

 the siphon; and of the cartilaginous facets, constituting the mantle 

 fastenings, all indicate that it belongs in the family Teuthidce, near 

 Onychoteuthis. But in this family there is a great diversity as to the 

 arrangement of the hooks and suckers constituting the armature of the 

 arms. Some of these combinations are as follows: 



TEUTIIIDiE. 



Sessile arms With suckers only. 



Onychia. — Tentacular club with two central rows of hooks, rows of 

 small suckers along each margin, and a cluster of suckers and tubercles 

 on the 'wrist.' Sessile arms with smooth suckers. (Teleoteuthis V.) 



Onychoteuthis (typical). — Tentacular club with two rows of hooks, 

 with an apical cluster of suckers, and with a cluster of suckers and 

 tubercles on the wrist. (Plate XV, figs. G, a-c.) Sessile arms with 

 suckers in two rows. 



Ancistroteuthis (typical). — Two central rows of hooks, with proximal 

 and apical suckers on the club, as in the last. Pen narrow, widest an- 

 teriorly, with a long, terminal, hollow cone. 



Gonatus. — Tentacular club with one or two central median hooks, and 

 with numerous, multiserial, small suckers, distally and laterally. Ses- 

 sile arms with four rows of suckers, those of the two central rows larger, 

 all serrate. 



Sessile arms with loth suckers and hooks. 



Abralia. — Tentacular club with two rows of alternating hooks and 

 suckers in the middle, and with a cluster of suckers on the wrist and 

 two rows at the tip. Sessile arms with hooks on the basal portion, and 

 two rows of small suckers toward the tips. Pen dilated in the middle, 

 hooded at tbe tip. Buccal membrane with suckers. 



