. Fig. 14. Graneledone poly- morplia. Hectocotylus. x 3. Fig. 15. Graneledone polymorpha. Radula. (2) Form affinis (1,9, 11, 12, 14). The body is rather wide, its index being 104-70. The head is usually much narrower, 93-53 per cent, the most usual form being that with a globular body and small, clearly defined head. The arms are about as long as the form oblonga, viz. 74-66. The suckers range from 11-6-7 P^^ cent. The web is distinctly shallower (30-27 per cent) and tends to be rather regularly bilateral. The eyes are moderate to large. The sculpture, as in oblonga, varies from fine, rather w
. Fig. 14. Graneledone poly- morplia. Hectocotylus. x 3. Fig. 15. Graneledone polymorpha. Radula. (2) Form affinis (1,9, 11, 12, 14). The body is rather wide, its index being 104-70. The head is usually much narrower, 93-53 per cent, the most usual form being that with a globular body and small, clearly defined head. The arms are about as long as the form oblonga, viz. 74-66. The suckers range from 11-6-7 P^^ cent. The web is distinctly shallower (30-27 per cent) and tends to be rather regularly bilateral. The eyes are moderate to large. The sculpture, as in oblonga, varies from fine, rather widely spaced granules to granular warts. The funnel-organ is W-shaped. There are seven to ten filaments in each demibranch. The hectocotylus (Fig. 14) varies from 17 to 9 per cent (} 7 per cent) of the arm in length. The forms of the ligula and calamus are very like those in var. oblonga, though the copulatory groove is narrower, and its walls corre- spondingly thicker. This condition is best seen in the male from Station 42. In the other males the organ is more like that of E. charcoti. In both forms the dorsal surface is demarcated from the ventral. In practically every example there is a well-marked ridge, in some specimens amounting to a thick keel (
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificexpedition
