A. E. Verrill — North American Cephalopods. 249 
The lower mandible now measures, from the tip of the rostrum to 
the posterior dorsal border of the mentum, 13 mm ; tip to the extreme 
posterior end of the gular lamina, 50 mm ; to the dorsal angle of the same, 
33 mm . to t jj e j uner enc | 0 f the alee, 46 mm ; to the bottom of the notch, 
13 mm ; breadth of alte, 24 mm ; transverse breadth at notches, 12 mm . 
The upper mandible, from the tip of the beak to the end of the 
palatine lamina, is Vl mm long ; from tip of beak to end of frontal 
lamina, 53 mm ; to bottom of notch, ]l mm ; length of exposed (dark) 
portion of anterior edge of alte, 14 mm . 
The odontopliore (Plate XXIY, figs. 1-4), has a very broad, thin, 
marginal membrane, yellowish-white in color, becoming brown and 
thickened toward the dentigerous portion, where there is a row of 
very small, thin plates, bordering the outer row of teeth ; the ventral 
portion of the dentigerous band is dark brown, regularly convex, and 
narrowed gradually to the obtuse end ; the dorsal portion is consider- 
ably longer, abruptly bent backward, with the borders incurved 
gradually decreasing to the posterior end ; on this part the teeth 
become much smaller and paler. 
The outer lateral teeth, on the anterior portion, are long, slender, 
sharp, and strongly curved ; the median ones are much shorter, with 
a sharp, strongly curved central point and a very small, almost 
rudimentary denticle on each side ; the inner laterals are a little 
longer than the median, with a stout incurved point ; on the outer 
side of its base there is a small denticle ; the teeth of the two outer 
rows, on each side, are simple. 
Length of odontopliore, from anterior bend to posterior tip of dor- 
sal end, 22 mm ; to tip of ventral end, 14 ram ; breadth of lateral mem- 
brane, in middle, ll mm ; of dentigerous belt, anteriorly, 3 mm . 
The following measurements were made by Mr. Dali, from the 
fresh specimens. 
Table of measurements (in inches). 
. 
No. l. 
No. 2. 
No. 3. 
Total length (to mutilated ends of tentacles) 
80 + 
110 + 
167 + 
Base of arms to tip of tail (head and body), 
51 
67 
102 
Base of arms to edge of mantle (head) 
5 
6 
10-5 
Edge of mantle to tip of tail (body), 
46 
61 
91-5 
Length of tail-fins (insertion to tip) 
33-75 
48 
Breadth of tail-fins, 
13-5 + 
255 
42 
Length of ‘ pen,’ 
60 
89 
Breadth of pen, in middle, 
Length of tentacular-arms (ends gone), 
.. 
12-25 
30 + 
43 + 
61 + 
Length of longest sessile arms (ends gone) 
30 + 
23-5 + 
40 + 
Diameter of body, 
7-5 
.. 
18 
Breadth between insertions of fins, 
35 
5 
Diameter of eye 
-- 
l 
1-25 
Trans. Conn. Acad., Vol. V. 31 February, 1880. 
