. Eledone . I nil. }\ Br. A. ext. Fig. 1H («)Trans, sect, distal part f arm showing relation of sucker (S). Fig. Ill (b) Sagittal sect, of sucker of Argonauta. Fig. lllfl. Text iig. Ill if, shows a diagram of a transverse section through the arm, indicating the relation of the sucker to the remaining muscles. Ill b, is a modification of Niemiec's figure of the sucker of Argonavta. The outer surface of the sucker is covered by the general skin of the arm. The inner lining is a much folded epithelium, which covers the inner and outer divisions of the adhesive cup (III a, II and I). A sphincter m
. Eledone . I nil. }\ Br. A. ext. Fig. 1H («)Trans, sect, distal part f arm showing relation of sucker (S). Fig. Ill (b) Sagittal sect, of sucker of Argonauta. Fig. lllfl. Text iig. Ill if, shows a diagram of a transverse section through the arm, indicating the relation of the sucker to the remaining muscles. Ill b, is a modification of Niemiec's figure of the sucker of Argonavta. The outer surface of the sucker is covered by the general skin of the arm. The inner lining is a much folded epithelium, which covers the inner and outer divisions of the adhesive cup (III a, II and I). A sphincter muscle (SpJi.) tends to close1 the upper and lower cups off from one another, and tins muscle is opposed by the vertical extensor muscle (III b, eat.). When the sucker is applied
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Keywords: ., bookcentury1900, bookdecade1900, bookpublish, booksubjectmollusks
