430 REPORT OF COMMISSIONER OF FISH AXD FISHERIES. [220] 



as in sonic of the other examples. All the sessile arms have lost more 

 or less of their tips, so that the actual length cannot be given, and 

 many of their suckers are either injured or lost ; the tentacular arms 

 are also injured and most of the large suckers of the clubs are de- 

 stroyed; the caudal fin was not only torn by handling, but one-half of 

 it had, apparently, been destroyed and the wound healed before the 

 death of the creature,* so that its true form cannot be determined; the 

 eye-balls were burst, and most of the pen was gone. 



The head, eye-lids, siphon, and front edge of the mantle are, however, 

 in fair condition, and as these parts have not been well preserved in any 

 of the previous examples, some new and valuable facts were learned in 

 regard to the structure of these organs. 



Many of the following characters are of generic value: The eye-lids 

 were large, not much thickened, and only slightly angulated, and with 

 a shallow sinus; diameter of opening about 120 mm (4.5 to 5 inches). The 

 transverse nuchal crests, behiud the eyes, are distinct, but only slightly 

 elevated ; of the longitudinal ones, only one, on each side, is distinct, 

 but it is short and not very high ; the others (unless they had been rubbed 

 off) are rudimentary. The siphon is large and broad; aperture, 102^"' 

 (4 inches) broad, slightly bilabiate, with a broad valve within; dorsal 

 bridles moderately developed. Siphon-pit shallow, smooth. Connective 

 cartilages, on base of the siphon, simple, long-ovate, slightly oblique, and 

 only a little concave. Connective cartilages on the sides of the mantle 

 short, and close to the front edge, very simple, consisting of a short, 

 slightly raised, longitudinal ridge. The dorsal angle of the mantle- 

 edge projects forward considerably beyond the sides, as an obtuse angle ; 

 the lateral angles are also distinct. The body is large and broad in the 

 middle and anteriorly, but tapers very rapidly to the base of the caudal 

 fin, which is relatively small. 



This specimen, when examined by me, measured as follows : Length 

 of mantle, to the lateral angles of the front edge, 4.1G feet; from edge 

 of mantle to inner base of ventral arms, 1.25 feet; circumference of 

 body, 4 feet; length of caudal fin, tip to anterior end of lobe, 21 inches; 

 breadth of one-half of fin, median line of tail ^o outer edge, 8 inches; 

 length of tentacular arms, 15 feet; of club, 2 feet; from first of the large 

 median suckers to the tip, 20 inches; length of ventral arms (minus tips), 

 4.GG feet; their circumference at base, 8.5 inches; length of the dorsal 

 arms (minus tips), 4.5 feet; their circumference, 7.5 inches; circumfer- 

 ence of second pair of arms, 7.5 inches; of third pair, S.5 inches; diame- 

 ter of largest suckers of sessile arms, .75 of an inch. 



The arms have a stout appearance, especially toward the base, and 

 do not differ very much in size. In the form of the arms and in the 

 structure of the suckers this specimen agrees essentially with those that 



* Owing to this fact, which was not understood by those who saw and figured it 

 at first, some of the cuts that have been printed give the taii very peculiar and re- 

 markable fjprins. 



