Line Drawing 1
Abothros carcharias, figs. 15-21. Fig. 15. Natural size. a, head; b, point to which the outer cylinder of tissue from the head covers the first segments of the colony, c. Fig. 16. Magn. 20 diam. Verti... MoreAbothros carcharias, figs. 15-21. Fig. 15. Natural size. a, head; b, point to which the outer cylinder of tissue from the head covers the first segments of the colony, c. Fig. 16. Magn. 20 diam. Vertical section through upper part of the head: a, skin; b, inorganic layer; c, parenchyma with strong longitudinal muscular bands; d, bulbs for retraction of proboscides, f; e, strong band connected with the retaining in situ of the bulbs. Fig. 17. Magn. 20 diam. Vertical section through lower half of head: a, colony of segmented zooids; b, prolongation of the substance of head as a cylinder of protection over the upper zooids; c, radiating bands connecting the colony with the head; d, fibrous boundary dividing the one from the other. Fig. 18. Magn. 200 diam. About one third of free end of proboscis: a, central retractor muscle. Fig. 19. Magn. 15 diam. Transverse section through the head: a, body constituents; b, fibrous capsule around the bulb, c. Fig. 20. Magn. 20 diam. Front view of a segment about centre of the colony: a, the line of distinction between one and the other, immediately above which is a light-shaded canal, the transverse water-vascular canal, which joins the longitudinal water-vascular canal (b) at each lateral edge of segment. Fig. 21. Magn. 65 diam. Transverse section through a part of one of the lowest zooids of the colony: a, skin; b, layers of muscular fibre and inorganic nodules; c, fibrous boundary of visceral space; d, ovarian vesicles in visceral space; e, lumen of longitudinal water-vascular canal. |
Line Drawing 2
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Photo Micrograph
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Scanning Electron Micrograph
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Global Cestode Database
Abothros carcharias, figs. 15-21. Fig. 15. Natural size. a, head; b, point to which the outer cylinder of tissue from the head covers the first segments of the colony, c. Fig. 16. Magn. 20 diam. Vertical section through upper part of the head: a, skin; b, inorganic layer; c, parenchyma with strong longitudinal muscular bands; d, bulbs for retraction of proboscides, f; e, strong band connected with the retaining in situ of the bulbs. Fig. 17. Magn. 20 diam. Vertical section through lower half of head: a, colony of segmented zooids; b, prolongation of the substance of head as a cylinder of protection over the upper zooids; c, radiating bands connecting the colony with the head; d, fibrous boundary dividing the one from the other. Fig. 18. Magn. 200 diam. About one third of free end of proboscis: a, central retractor muscle. Fig. 19. Magn. 15 diam. Transverse section through the head: a, body constituents; b, fibrous capsule around the bulb, c. Fig. 20. Magn. 20 diam. Front view of a segment about centre of the colony: a, the line of distinction between one and the other, immediately above which is a light-shaded canal, the transverse water-vascular canal, which joins the longitudinal water-vascular canal (b) at each lateral edge of segment. Fig. 21. Magn. 65 diam. Transverse section through a part of one of the lowest zooids of the colony: a, skin; b, layers of muscular fibre and inorganic nodules; c, fibrous boundary of visceral space; d, ovarian vesicles in visceral space; e, lumen of longitudinal water-vascular canal. 
