A. FE. Verrill—North American Cephalopods. 195 
Histioteuthis Collinsii Verrill. 
In addition to the foregoing examples, all of which are believed to 
be referable to the genus Architeuthis, I have in a former article* 
described a very remarkable squid, belonging to the genus /7/istiotew- 
this, in which a broad thin membrane or ‘web’ unites the six upper 
arms together, nearly to their tips, while the lower ones have a 
shorter web uniting them to the rest. Although small, when con- 
trasted with some of the gigantic specimens of Architeuthis, it is 
considerably larger than any of the common small squids, and as it 
inhabits the same localities with Architewthis, and has some points of 
resemblance to the latter genus, especially in having the smooth- 
rimmed suckers for uniting together the long tentacular-arms, I have 
thought it best to describe it in this part of my article, in connection 
with the species of Architeuthis. The only specimen known was 
obtained (with No. 20) from the stomach of a large and voracious fish 
(Alepidosaurus ferox), having a formidable array of long sharp 
teeth, eminently adapted for the capture of such prey. It was taken 
by Captain J. W. Collins and crew of the schooner Marion, in deep 
water off the coast of Nova Scotia, and presented to the U. 8. Fish 
Commission. This species (7. Collinsii) is figured on Plate XXII, 
and will be described farther on. 
Onychoteuthis robusta (Dall, MSS.). 
In this connection I may also refer to a gigantic Pacific Ocean 
species, obtained by Mr. W. H. Dall, on the coast of Alaska, in 1872, 
which will be described as fully as possible in another part of this 
article, when discussing the foreign species of large Cephalopods, 
(see Plates XXIII and XXIV.) Three specimens were observed 
and measured by Mr. Dall. The largest measured, from the base of 
the arms to the end of the body, 8°5 feet. The ends of all the arms 
had been destroyed, in all the specimens. It was formerlyt briefly 
described by me under Mr. Dall’s MSS. name, Ommastrephes robustus, 
but a more careful study of the parts preserved, especially the ‘ cone’ 
of the ‘pen’ and the odontophore, has convinced me that it belongs 
to the genus Onychoteuthis, characterized especially by having rows 
of sharp claws or hooks on the ‘club’ of the tentacular-arms, instead 
of suckers. All the species of this genus previously known are of 
small size, and pelagic in their habits. It is, therefore, of especial 
interest to add another generic type to the list of gigantic species. 
* American Journal of Science, vol. xvii, p. 241, 1879. 
+ American Journal of Science, vol. xii, p. 236, 1876. 
