. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 456 DISCOVERY REPORTS absence of any distinction between the spines of the fertile and non-fertile zones, the spines all being slender, and usually short, as compared with those of the typical form. The ovicells are broader than is usual in the typical form and differ in their sculpture (Fig. 48 C). A reticulate phase succeeds the radially striated phase, but its lines do not. 5mm Fig. 48. A, B. Camptoplites retiformis (Kluge). St. WS 42, South Georgia. A. Ovicells from younger fertile zone show
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 456 DISCOVERY REPORTS absence of any distinction between the spines of the fertile and non-fertile zones, the spines all being slender, and usually short, as compared with those of the typical form. The ovicells are broader than is usual in the typical form and differ in their sculpture (Fig. 48 C). A reticulate phase succeeds the radially striated phase, but its lines do not. 5mm Fig. 48. A, B. Camptoplites retiformis (Kluge). St. WS 42, South Georgia. A. Ovicells from younger fertile zone showing stages in the development of the reticulation. One of the ovicells is seen obliquely. B. Fully calcified ovicell from the older fertile zone of the same colony. The spines are seen end-on. C. C. retiformis var. tenuispina St. 195, South Shetland Islands. Three zooecia with fully formed ovicells. D, E. C. retiformis var. tenuispina St. 363, South Sandwich Islands. Avicularia. F. C. latus (Kluge). St. TN 316, McMurdo Sound. Small avicularium for comparison with Fig. E. ect. edge of calcareous part of ectooecium, r. tip of a rootlet from another branch, sr. avicularian scar. become generally and uniformly thickened as in the typical form. In older ovicells nodular thickenings appear on the lines and may be accompanied by punctate sculpture in the meshes. The figure shows the first indications of these thickenings. The pattern of the reticulation is variable. The meshes may be fairly regular and more or less hexa-. 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 Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
Size: 1633px × 1530px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
