280 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [70] 



Lestotcuthis (gen. nov.). — Tentacular club with numerous suckers, and 

 few large central books. Sessile arms dissimilar; lower ones with four 

 rows of suckers; upper, with two central rows of hooks, alternating with 

 marginal suckers on each side. Pen narrow, with a short, hollow, term- 

 inal cone. (Type, L. Kamtschatica Middendorft', sp.) 



Sessile arms with hooks only. 



Verania. — Tentacular club with hooks ; sessile arms with hooks in two 

 rows. Fins large and broad. Pen lanceolate. 



Acanthoteuthis. — Tentacular and sessile arms with hooks. (Fossil.) 



AncistrocMrus. — Tentacular and sessile arms with hooks in two rows. 

 Pen lanceolate. Fins extending forward to edge of mantle. 



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

 with a cluster of small connective suckers and tubercles on the wrist. 

 Sessile arms all with hooks, in two rows, extending to the tips. Fin6 

 short. Pen lanceolate. 



The position of Moroteuthis among the genera enumerated above must 

 remain uncertain, for the present, because the armature of the tentacular 

 club is unknown. But as it has smooth-ringed suckers on the ventral 

 arms, at least at the base, it is probable that the genus is more nearly 

 allied to the genera in the first group. But it differs very decidedly 

 from all those named, in the form of the pen, and in having a long, solid 

 cartilaginous cone, shaped like a large Belemnites, appended to its pos- 

 terior end. In respect to this feature of the pen, this genus differs from 

 all existing genera, and seems to have affinities with some of the rneso- 

 zoic fossil genera. 



In Onychoteuthis and Teleotcuthis* the pen has a more or less lanceo- 

 late form, with a small posterior hood or hollow cone, without a solid 

 appendix. Gonatus and Lestoteuthis not only differ from Moroteuthis in 

 the pen, but have four rows of serrated suckers on the ventral arms. 



The genus Ancistroteuthis (type A. Lichtensteinii) agrees somewhat 

 better in the form of the pen, which is widest near the anterior end, from 

 whence it tapers back to a long and oblique, compressed, posterior, 

 hollow cone, but without a solid appendix at the end. It has numerous 

 longitudinal nuchal crests, like Onychoteuthis. 



It is not improbable that it may become necessary to establish a dis- 

 tinct family for Moroteuthis, when its armature becomes known. In that 

 case the family should be called Moroteuthidce. 



LESTOTEUTHIS Verrill, 1880. 



The characters of Lestoteuthis Kamtschatica, which I proposed to take as 

 the type of this generic group, are not yet fully known. The peculiari- 



*This name is proposed as a substitute for Onychia Lesueur, 1821 (non Hubner, 1816). 

 Tbe type-species is T. carribcea (Leg., sp.). T. platyptera D'Orb. and T. Krohmi Verany 

 appear to be additional species. 



