A. JE. Verrill — N^orth American Cephalopods. 239 



dux^ and the same that Harting* mentioned, under the name '■Archi- 

 teuthis du.i' 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 miable 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 unpublished memoir.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. Harveyi more than A. princeps, 

 and is a little larger thau that of our No. 5. The beak is moi'e 

 rounded dorsally, less acute, and scarcely incurved ; the notch is 

 narrow, and the alar tooth is not prominent. 



M. Paul Gervais, iu the Journal de Zoologie, iv, p. 90, 1875, gives 

 a shoi't 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 sheets and unpublished plates, not seen by me, of Steenstrup's article, 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 a man. 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, HI 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 in alcohol. Both are of comparatively 

 small size. One, from the northern coast of Iceland,! he refers to A. 

 nionacJms. 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. dux. 



It is evident, therefore, that at no distant day, most of the remain- 

 ing doubtful points in respect to the structu.re and relationship of the 



* Description de quelques fragments de deux Cephalopodes gigantesques. Publiees 

 par I'Academle 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 

 ilanual of Conchology, i, plates 60 and 86. 



\ This one is referred to by Dr. Packard, Amer. Xaturalist, vol. vii, p. 9-4, 1873. 



