. Bulletin of the British Museum (Natural History) Zoology. . Plate 1 Delosina complexa, Arafura Sea. Fig. 1. A partially sectioned specimen, showing the trematophore, subsutural tubes, sutural openings and the general disposition of the chambers. Scale bar: 100 urn. Fig. 2. A close-up of the trematophore. Note the larger openings surrounded by a series of smaller openings lying in a loop around the apex. Scale bar: 20 um. Fig. 3. Internal view showing how a chamber joins a previous one without secreting extra layers of calcite, as the line of contact and the pores of the previous chamber clea
. Bulletin of the British Museum (Natural History) Zoology. . Plate 1 Delosina complexa, Arafura Sea. Fig. 1. A partially sectioned specimen, showing the trematophore, subsutural tubes, sutural openings and the general disposition of the chambers. Scale bar: 100 urn. Fig. 2. A close-up of the trematophore. Note the larger openings surrounded by a series of smaller openings lying in a loop around the apex. Scale bar: 20 um. Fig. 3. Internal view showing how a chamber joins a previous one without secreting extra layers of calcite, as the line of contact and the pores of the previous chamber clearly demonstrates. Scale bar: 3 Um. Fig. 4. Part of the cup-shaped feature underlying the trematophore. Note that this cup is not a chamberlet but an enlarging of the subsutural tube. Scale bar: 20 um. Fig. 5. A close-up of Fig. 1, showing the subsutural tubes of ultimate and penultimate chamber. Scale bar: 10 um. Fig. 6. A view of the inside of the subsutural tube, seen from the lumen side, showing the sutural openings and the constructional relationship between the tube and the wall of the previous chambers. Scale bar: 20 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Farn, Alexander E. London : Butterworths
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