416 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [206] 



simple ridges ; those of the siphon ovate. Kucha! olfactory crests one 

 or more on each side, longitudinal* Caudal fin of adult, large, spear- 

 shaped. Ventral arms with four rows of denticulated suckers. No 

 trace of hectocotylization detected.* Lateral and dorsal arms with two 

 marginal rows of small suckers and two median rows of larger hooks. 

 Tentacular arms with a central row of hooks, the two distal ones largest; 

 with a large distal and two lateral groups of small suckers, in numerous 

 rows; and with a lateral group of peculiar connective suckers, alter- 

 nating with tubercles, near the lower margin, and a row of smaller ones 

 extending for a long distance down the margin of the arm; upper mar- 

 gin of the arm with a band of small, pediceled suckers aloug about half 

 its length. Pen narrow, with a short, hollow, posterior cone. 



Gonatus Gray, typical (non Sars, Steenst.), differs in having on all the 

 arms four rows of true suckers, all of which are similar, and have the 

 marginal ring divided into a series of several sharp denticles on the 

 higher side. This may be a sexual character, but the two forms should 

 be kept separate, awaiting further evidence. Steeustrup does not give 

 the sex of his specimens. 



Lestoteuthis Fabricii (Fabr.) Verrill. (See pp. [7(5], [79].) 

 ? Onychoteuthis Eamtschatica Middendorfi', 1849. 



Gonatus Fabricii Steeustrup {pars), in Morch, Faunula Molluscorum Ins. FserS- 

 erne, <Vid. Meddei. nat. For., 1867, p. 102; Faunula Mollusc. Islandia?, 

 <Vid. Meddei. nat. For., Kjobenhavn, 1868, p. 227. 

 Gonatus Fabricii Morch (pars), in T. R. Jones, Arctic Manual, p. 130, 1875. 



Steeustrup, Oversigt overd. Kongl. I). Vidensk. Selsk. Fork., 1881. [Sep. 



copy, p. 26], pi. 1, figs. 1-7. 

 Verrill, (pars) Trans. Conn. Acad., v, p. '291 ; this vol., p. [79]. 

 Cheloteuthis rapax Verrill, Trans. Coin. Acad., v, p. 293, pi. 49, figs. l-l f ; Bul- 

 letin Mus. Coiup. Zool., viii, p. 110, pi. 2, figs. l-l f , 1881. 



Plate XV, fig. 1-lc, 2-2<7, 3-3/, 4. Plate XLV, fig. 1-ltf. 



Body elongated, tapering to an acute posterior end; anterior edge of 

 mantle nearly even dorsally, with a slight median emargination ; lat- 

 eral angles well-marked, in line with the internal connective cartilage, 

 which forms a long, simple, longitudinal ridge. Caudal tin broad, spear- 

 shaped, broadest in advance of the middle; the lateral angles arc well 

 rounded; the tip is very acute; the anterior lobes are broadly rounded, 

 projecting forward beyond the insertion. Head large, short, and broad; 

 eyes large, occupying most of the sides of the head; eve-lids well de- 

 veloped, thickened, with a narrow, oblique sinus. Siphon large, in a 

 deep groove, with two stout, dorsal bridles; lateral connective cartilages 

 large, long-ovate, posterior end broadest. One olfactory crest on each 

 side, behind the eye, in the form of a low, longitudinal membrane; 

 slight indications of another, lower down; a small, fleshy, flattened, 

 projecting papilla near the auditory opening. The outer buccal mem- 



* My largest specimen, although apparently adult, is not sexually mature. An older 

 specimea might be hectocotylized. 



