. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 12. Figure 12. Bow reef. Trematooecia aviculifera colony growing on side of coral head, Carrie Crassimarginatella tuberosa (Canu and Bassler, 1928). Crassimarginatella tuberosa (Fig. 13) colonies were collected for observations of their B zooids. While examining these colonies, it was noted that fouled frontal membranes in this bryozoan species, like those of cupuladriid bryozoans (Winston and Hakansson, 1989) and many others, underwent a molting process. The frontal walls of many zooids in older colony region
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 12. Figure 12. Bow reef. Trematooecia aviculifera colony growing on side of coral head, Carrie Crassimarginatella tuberosa (Canu and Bassler, 1928). Crassimarginatella tuberosa (Fig. 13) colonies were collected for observations of their B zooids. While examining these colonies, it was noted that fouled frontal membranes in this bryozoan species, like those of cupuladriid bryozoans (Winston and Hakansson, 1989) and many others, underwent a molting process. The frontal walls of many zooids in older colony regions had become fouled with calcareous algae and algal films. Yet in patches, even in old regions, there were areas with clean greenish yellow walls. It was noticed during the avicularia observations that frontal walls of some fouled zooids had peeled partly off, and new frontal walls, transparent and shiny, lay beneath them. Other zooids had swollen frontal walls such as had been observed in molting cupuladriids. Peeling away the old frontal membrane exposed a new frontal wall, complete with new operculum, that had formed beneath the old one. ";& ,. 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 Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Press]
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