A. EB. Verrill— North American Cephalopods. 239 
dux, and the same that Harting* mentioned, under the name ‘.Are/hi- 
teuthis dux Steenstrup,’ as collected at the same time and place, and 
of which he published an outline figure (see Plate XXV, fig. 2) 
of the lower jaw, copied from a drawing furnished to him by 
Steenstrup. 
Harting states that the pen or ‘ gladius’ of this specimen is six feet 
long. Many important parts of this specimen were secured, and I 
regret that I have been unable to see the figures and description of 
it, referred to by Harting as forming part of Professor Steenstrup’s 
unpublished memoir. But to judge by the outline figure given by 
Harting, it is a species quite distinct from those described by me. 
The lower jaw resembles that of A. Harvey? more than A. princeps, 
and is a little larger than that of our No. 5. The beak is more 
rounded dorsally, less acute, and scarcely incurved; the notch is 
narrow, and the alar tooth is not prominent. 
M. Paul Gervais, in the Journal de Zoologie, iv, p. 90, 1875, gives 
a short description of this species, based apparently on the proof- 
sheets and unpublished plates, not seen by me, of Steenstrup’s article, 
referred to above. He describes it as follows: A large species, of 
which a fragment of an arm preserved in the Museum of Copenhagen 
is nearly as large as the arm of aman. The sucker-bearing surface 
of the arm is extended bilaterally into a membrane exceeding, on each 
side, the arm itself. Diameter of the opening of the suckers, 0°020; 
of the suckers themselves, 0°030. Length of the dorsal bone (pen), 
2™; breadth [longueur, by error}, measured in the middle of its length 
[longueur], 0°17. He refers to Steenstrup’s Plates, III and IV. 
In a letter to the writer, dated Sept. 4, 1875, Professor Steenstrup 
states that in addition to the specimens above mentioned, there are, 
in the Museum of the University of Copenhagen, two complete speci- 
mens of Architeuthis, preserved inalcohol. Both are of comparatively 
small size. One, from the northern coast of Iceland,+ he refers to A. 
monachus. It has tentacular-arms 10 feet long, and sessile arms 4 
feet long. The other is a still smaller one, from the warmer parts of 
the Atlantic, possibly the young of A. dua. 
It is evident, therefore, that at no distant day, most of the remain- 
ing doubtful points in respect to the structure and relationship of the 
* Description de quelques fragments de deux Céphalopodes gigantesques. Publiées 
par Académie Royale des Sciences A Amsterdam. 1860. 4to, with three plates 
(Verh. K. Akad. Weten., ix, 1861.) The figures have been partly copied in Tryon’s 
Manual of Conchology, i, plates 60 and 86. 
+ This one is referred to by Dr. Packard, Amer. Naturalist, vol. vii, p. 94, 1873. 
