Report on the scientific results of the voyage of "Scotia" during the years 1902, 1903 and 1904, under the leadership of William SBruce . is somewhat narrower than the body, and the eyes are but slightlyprominent. The Arms are somewhat unequal, and about four times as long as the body ;their order of length is 1, 2 = 3, 4. The umbrella is well marked and its arrange-ment very characteristic. On the dorsal aspect of eacli arm it is attached as far asa point about one-third up the arm, whilst on the ventral aspect its attachmentcan be followed to about within 1 cm. of the extreme tip of the a
Report on the scientific results of the voyage of "Scotia" during the years 1902, 1903 and 1904, under the leadership of William SBruce . is somewhat narrower than the body, and the eyes are but slightlyprominent. The Arms are somewhat unequal, and about four times as long as the body ;their order of length is 1, 2 = 3, 4. The umbrella is well marked and its arrange-ment very characteristic. On the dorsal aspect of eacli arm it is attached as far asa point about one-third up the arm, whilst on the ventral aspect its attachmentcan be followed to about within 1 cm. of the extreme tip of the arm. The suckers (BOY. SOC. EDIN. TRANS., VOL. XLVIII., 276.) CEPHALOPODA OF TIIK SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 95 (fig. 1) on all the eight arms are enlarged for the second quarter of the arm ; afterabout the first twelve suckers they enlarge very rapidly for about .six suckers, andthen gradually diminish. The third arm on the right side is hectocotylised (fig. 2),and is considerably shorter than its fellow on the opposite side. The seminal grooveis well marked, but is neither very broad nor very deep; the modified extremity. KKI. 3. — Rjidula of Polypus brucei [H 924]. x 25. is unusually long and narrow, and, instead of the usual transverse ridges, shows adouble row of small papillae along its bottom. TJie Surface shows a considerable amount of wrinkling, due apparently to theaction of preservative fluids, but was most probably smooth when the animal wasalive. There is no trace of any warts or tubercles. The Colour is dull purplish above, changing gradually into a pinkish stonecolour below. The llodnla is shown in fiij. 3. Dimensions in Millimetres. End of body to mantle margin .End of body to eyeBreadth of bodyliivadth of headKyr to edge of umbrellaLength of hectocotylus .Breadth of hectocotylusDiameter of largest sucker un arm Length of first armLength of second armLength of third armLength of fourth arm *200255 Mutilated. 587560506017315
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Keywords: ., bookauthorbrucewil, bookcentury1900, bookdecade1910, bookyear1912
